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import openssh-7.8p1-4.el8

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CentOS Sources 2019-05-07 02:34:56 -04:00 committed by Andrew Lukoshko
commit b830398e18
72 changed files with 29493 additions and 0 deletions
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3
.gitignore vendored Normal file
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@ -0,0 +1,3 @@
SOURCES/DJM-GPG-KEY.gpg
SOURCES/openssh-7.8p1.tar.gz
SOURCES/pam_ssh_agent_auth-0.10.3.tar.bz2

3
.openssh.metadata Normal file
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@ -0,0 +1,3 @@
bed7240bb17840b451b8f8457791c33456814d93 SOURCES/DJM-GPG-KEY.gpg
27e267e370315561de96577fccae563bc2c37a60 SOURCES/openssh-7.8p1.tar.gz
a4482a050fdad1d012427e45799564136708cf6b SOURCES/pam_ssh_agent_auth-0.10.3.tar.bz2

19
SOURCES/openssh-4.3p2-askpass-grab-info.patch Normal file
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@ -0,0 +1,19 @@
diff -up openssh-7.4p1/contrib/gnome-ssh-askpass2.c.grab-info openssh-7.4p1/contrib/gnome-ssh-askpass2.c
--- openssh-7.4p1/contrib/gnome-ssh-askpass2.c.grab-info 2016-12-23 13:31:22.645213115 +0100
+++ openssh-7.4p1/contrib/gnome-ssh-askpass2.c 2016-12-23 13:31:40.997216691 +0100
@@ -65,9 +65,12 @@ report_failed_grab (GtkWidget *parent_wi
err = gtk_message_dialog_new(GTK_WINDOW(parent_window), 0,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
- "Could not grab %s. "
- "A malicious client may be eavesdropping "
- "on your session.", what);
+ "SSH password dialog could not grab the %s input.\n"
+ "This might be caused by application such as screensaver, "
+ "however it could also mean that someone may be eavesdropping "
+ "on your session.\n"
+ "Either close the application which grabs the %s or "
+ "log out and log in again to prevent this from happening.", what, what);
gtk_window_set_position(GTK_WINDOW(err), GTK_WIN_POS_CENTER);
gtk_dialog_run(GTK_DIALOG(err));

81
SOURCES/openssh-5.1p1-askpass-progress.patch Normal file
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@ -0,0 +1,81 @@
diff -up openssh-7.4p1/contrib/gnome-ssh-askpass2.c.progress openssh-7.4p1/contrib/gnome-ssh-askpass2.c
--- openssh-7.4p1/contrib/gnome-ssh-askpass2.c.progress 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/contrib/gnome-ssh-askpass2.c 2016-12-23 13:31:16.545211926 +0100
@@ -53,6 +53,7 @@
#include <string.h>
#include <unistd.h>
#include <X11/Xlib.h>
+#include <glib.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
@@ -81,13 +82,24 @@ ok_dialog(GtkWidget *entry, gpointer dia
gtk_dialog_response(GTK_DIALOG(dialog), GTK_RESPONSE_OK);
}
+static void
+move_progress(GtkWidget *entry, gpointer progress)
+{
+ gdouble step;
+ g_return_if_fail(GTK_IS_PROGRESS_BAR(progress));
+
+ step = g_random_double_range(0.03, 0.1);
+ gtk_progress_bar_set_pulse_step(GTK_PROGRESS_BAR(progress), step);
+ gtk_progress_bar_pulse(GTK_PROGRESS_BAR(progress));
+}
+
static int
passphrase_dialog(char *message)
{
const char *failed;
char *passphrase, *local;
int result, grab_tries, grab_server, grab_pointer;
- GtkWidget *parent_window, *dialog, *entry;
+ GtkWidget *parent_window, *dialog, *entry, *progress, *hbox;
GdkGrabStatus status;
grab_server = (getenv("GNOME_SSH_ASKPASS_GRAB_SERVER") != NULL);
@@ -104,14 +116,32 @@ passphrase_dialog(char *message)
"%s",
message);
+ hbox = gtk_hbox_new(FALSE, 0);
+ gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox, FALSE,
+ FALSE, 0);
+ gtk_widget_show(hbox);
+
entry = gtk_entry_new();
gtk_box_pack_start(
- GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), entry,
- FALSE, FALSE, 0);
+ GTK_BOX(hbox), entry,
+ TRUE, FALSE, 0);
+ gtk_entry_set_width_chars(GTK_ENTRY(entry), 2);
gtk_entry_set_visibility(GTK_ENTRY(entry), FALSE);
gtk_widget_grab_focus(entry);
gtk_widget_show(entry);
+ hbox = gtk_hbox_new(FALSE, 0);
+ gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), hbox, FALSE,
+ FALSE, 8);
+ gtk_widget_show(hbox);
+
+ progress = gtk_progress_bar_new();
+
+ gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Passphrase length hidden intentionally");
+ gtk_box_pack_start(GTK_BOX(hbox), progress, TRUE,
+ TRUE, 5);
+ gtk_widget_show(progress);
+
gtk_window_set_title(GTK_WINDOW(dialog), "OpenSSH");
gtk_window_set_position (GTK_WINDOW(dialog), GTK_WIN_POS_CENTER);
gtk_window_set_keep_above(GTK_WINDOW(dialog), TRUE);
@@ -120,6 +150,8 @@ passphrase_dialog(char *message)
gtk_dialog_set_default_response(GTK_DIALOG(dialog), GTK_RESPONSE_OK);
g_signal_connect(G_OBJECT(entry), "activate",
G_CALLBACK(ok_dialog), dialog);
+ g_signal_connect(G_OBJECT(entry), "changed",
+ G_CALLBACK(move_progress), progress);
gtk_window_set_keep_above(GTK_WINDOW(dialog), TRUE);

12
SOURCES/openssh-5.8p2-sigpipe.patch Normal file
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@ -0,0 +1,12 @@
diff -up openssh-5.8p2/ssh-keyscan.c.sigpipe openssh-5.8p2/ssh-keyscan.c
--- openssh-5.8p2/ssh-keyscan.c.sigpipe 2011-08-23 18:30:33.873025916 +0200
+++ openssh-5.8p2/ssh-keyscan.c 2011-08-23 18:32:24.574025362 +0200
@@ -715,6 +715,8 @@ main(int argc, char **argv)
fdlim_set(maxfd);
fdcon = xcalloc(maxfd, sizeof(con));
+ signal(SIGPIPE, SIG_IGN);
+
read_wait_nfdset = howmany(maxfd, NFDBITS);
read_wait = xcalloc(read_wait_nfdset, sizeof(fd_mask));

24
SOURCES/openssh-5.9p1-ipv6man.patch Normal file
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@ -0,0 +1,24 @@
diff -up openssh-5.9p0/ssh.1.ipv6man openssh-5.9p0/ssh.1
--- openssh-5.9p0/ssh.1.ipv6man 2011-08-05 22:17:32.000000000 +0200
+++ openssh-5.9p0/ssh.1 2011-08-31 13:08:34.880024485 +0200
@@ -1400,6 +1400,8 @@ manual page for more information.
.Nm
exits with the exit status of the remote command or with 255
if an error occurred.
+.Sh IPV6
+IPv6 address can be used everywhere where IPv4 address. In all entries must be the IPv6 address enclosed in square brackets. Note: The square brackets are metacharacters for the shell and must be escaped in shell.
.Sh SEE ALSO
.Xr scp 1 ,
.Xr sftp 1 ,
diff -up openssh-5.9p0/sshd.8.ipv6man openssh-5.9p0/sshd.8
--- openssh-5.9p0/sshd.8.ipv6man 2011-08-05 22:17:32.000000000 +0200
+++ openssh-5.9p0/sshd.8 2011-08-31 13:10:34.129039094 +0200
@@ -940,6 +940,8 @@ concurrently for different ports, this c
started last).
The content of this file is not sensitive; it can be world-readable.
.El
+.Sh IPV6
+IPv6 address can be used everywhere where IPv4 address. In all entries must be the IPv6 address enclosed in square brackets. Note: The square brackets are metacharacters for the shell and must be escaped in shell.
.Sh SEE ALSO
.Xr scp 1 ,
.Xr sftp 1 ,

78
SOURCES/openssh-5.9p1-wIm.patch Normal file
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@ -0,0 +1,78 @@
diff -up openssh-5.9p1/Makefile.in.wIm openssh-5.9p1/Makefile.in
--- openssh-5.9p1/Makefile.in.wIm 2011-08-05 22:15:18.000000000 +0200
+++ openssh-5.9p1/Makefile.in 2011-09-12 16:24:18.643674014 +0200
@@ -66,7 +66,7 @@ LIBSSH_OBJS=acss.o authfd.o authfile.o b
cipher-bf1.o cipher-ctr.o cipher-3des1.o cleanup.o \
compat.o compress.o crc32.o deattack.o fatal.o hostfile.o \
log.o match.o md-sha256.o moduli.o nchan.o packet.o \
- readpass.o rsa.o ttymodes.o xmalloc.o addrmatch.o \
+ readpass.o rsa.o ttymodes.o whereIam.o xmalloc.o addrmatch.o \
atomicio.o key.o dispatch.o kex.o mac.o uidswap.o uuencode.o misc.o \
monitor_fdpass.o rijndael.o ssh-dss.o ssh-ecdsa.o ssh-rsa.o dh.o \
kexdh.o kexgex.o kexdhc.o kexgexc.o bufec.o kexecdh.o kexecdhc.o \
diff -up openssh-5.9p1/log.h.wIm openssh-5.9p1/log.h
--- openssh-5.9p1/log.h.wIm 2011-06-20 06:42:23.000000000 +0200
+++ openssh-5.9p1/log.h 2011-09-12 16:34:52.984674326 +0200
@@ -65,6 +65,8 @@ void verbose(const char *, ...) __at
void debug(const char *, ...) __attribute__((format(printf, 1, 2)));
void debug2(const char *, ...) __attribute__((format(printf, 1, 2)));
void debug3(const char *, ...) __attribute__((format(printf, 1, 2)));
+void _debug_wIm_body(const char *, int, const char *, const char *, int);
+#define debug_wIm(a,b) _debug_wIm_body(a,b,__func__,__FILE__,__LINE__)
void set_log_handler(log_handler_fn *, void *);
diff -up openssh-5.9p1/sshd.c.wIm openssh-5.9p1/sshd.c
--- openssh-5.9p1/sshd.c.wIm 2011-06-23 11:45:51.000000000 +0200
+++ openssh-5.9p1/sshd.c 2011-09-12 16:38:35.787816490 +0200
@@ -140,6 +140,9 @@ int deny_severity;
extern char *__progname;
+/* trace of fork processes */
+extern int whereIam;
+
/* Server configuration options. */
ServerOptions options;
@@ -666,6 +669,7 @@ privsep_preauth(Authctxt *authctxt)
return 1;
} else {
/* child */
+ whereIam = 1;
close(pmonitor->m_sendfd);
close(pmonitor->m_log_recvfd);
@@ -715,6 +719,7 @@ privsep_postauth(Authctxt *authctxt)
/* child */
+ whereIam = 2;
close(pmonitor->m_sendfd);
pmonitor->m_sendfd = -1;
@@ -1325,6 +1330,8 @@ main(int ac, char **av)
Key *key;
Authctxt *authctxt;
+ whereIam = 0;
+
#ifdef HAVE_SECUREWARE
(void)set_auth_parameters(ac, av);
#endif
diff -up openssh-5.9p1/whereIam.c.wIm openssh-5.9p1/whereIam.c
--- openssh-5.9p1/whereIam.c.wIm 2011-09-12 16:24:18.722674167 +0200
+++ openssh-5.9p1/whereIam.c 2011-09-12 16:24:18.724674418 +0200
@@ -0,0 +1,12 @@
+
+int whereIam = -1;
+
+void _debug_wIm_body(const char *txt, int val, const char *func, const char *file, int line)
+{
+ if (txt)
+ debug("%s=%d, %s(%s:%d) wIm = %d, uid=%d, euid=%d", txt, val, func, file, line, whereIam, getuid(), geteuid());
+ else
+ debug("%s(%s:%d) wIm = %d, uid=%d, euid=%d", func, file, line, whereIam, getuid(), geteuid());
+}
+
+

21
SOURCES/openssh-6.1p1-gssapi-canohost.patch Normal file
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@ -0,0 +1,21 @@
diff -up openssh-6.1p1/sshconnect2.c.canohost openssh-6.1p1/sshconnect2.c
--- openssh-6.1p1/sshconnect2.c.canohost 2012-10-30 10:52:59.593301692 +0100
+++ openssh-6.1p1/sshconnect2.c 2012-10-30 11:01:12.870301632 +0100
@@ -699,12 +699,15 @@ userauth_gssapi(Authctxt *authctxt)
static u_int mech = 0;
OM_uint32 min;
int r, ok = 0;
- const char *gss_host;
+ const char *gss_host = NULL;
if (options.gss_server_identity)
gss_host = options.gss_server_identity;
- else if (options.gss_trust_dns)
+ else if (options.gss_trust_dns) {
gss_host = get_canonical_hostname(active_state, 1);
+ if (strcmp(gss_host, "UNKNOWN") == 0)
+ gss_host = authctxt->host;
+ }
else
gss_host = authctxt->host;

142
SOURCES/openssh-6.2p1-vendor.patch Normal file
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@ -0,0 +1,142 @@
diff -up openssh-7.4p1/configure.ac.vendor openssh-7.4p1/configure.ac
--- openssh-7.4p1/configure.ac.vendor 2016-12-23 13:34:51.681253844 +0100
+++ openssh-7.4p1/configure.ac 2016-12-23 13:34:51.694253847 +0100
@@ -4930,6 +4930,12 @@ AC_ARG_WITH([lastlog],
fi
]
)
+AC_ARG_ENABLE(vendor-patchlevel,
+ [ --enable-vendor-patchlevel=TAG specify a vendor patch level],
+ [AC_DEFINE_UNQUOTED(SSH_VENDOR_PATCHLEVEL,[SSH_RELEASE "-" "$enableval"],[Define to your vendor patch level, if it has been modified from the upstream source release.])
+ SSH_VENDOR_PATCHLEVEL="$enableval"],
+ [AC_DEFINE(SSH_VENDOR_PATCHLEVEL,SSH_RELEASE,[Define to your vendor patch level, if it has been modified from the upstream source release.])
+ SSH_VENDOR_PATCHLEVEL=none])
dnl lastlog, [uw]tmpx? detection
dnl NOTE: set the paths in the platform section to avoid the
@@ -5194,6 +5200,7 @@ echo " Translate v4 in v6 hack
echo " BSD Auth support: $BSD_AUTH_MSG"
echo " Random number source: $RAND_MSG"
echo " Privsep sandbox style: $SANDBOX_STYLE"
+echo " Vendor patch level: $SSH_VENDOR_PATCHLEVEL"
echo ""
diff -up openssh-7.4p1/servconf.c.vendor openssh-7.4p1/servconf.c
--- openssh-7.4p1/servconf.c.vendor 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/servconf.c 2016-12-23 13:36:07.555268628 +0100
@@ -143,6 +143,7 @@ initialize_server_options(ServerOptions
options->max_authtries = -1;
options->max_sessions = -1;
options->banner = NULL;
+ options->show_patchlevel = -1;
options->use_dns = -1;
options->client_alive_interval = -1;
options->client_alive_count_max = -1;
@@ -325,6 +326,8 @@ fill_default_server_options(ServerOption
options->ip_qos_bulk = IPTOS_DSCP_CS1;
if (options->version_addendum == NULL)
options->version_addendum = xstrdup("");
+ if (options->show_patchlevel == -1)
+ options->show_patchlevel = 0;
if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
options->fwd_opts.streamlocal_bind_mask = 0177;
if (options->fwd_opts.streamlocal_bind_unlink == -1)
@@ -402,7 +405,7 @@ typedef enum {
sIgnoreUserKnownHosts, sCiphers, sMacs, sPidFile,
sGatewayPorts, sPubkeyAuthentication, sPubkeyAcceptedKeyTypes,
sXAuthLocation, sSubsystem, sMaxStartups, sMaxAuthTries, sMaxSessions,
- sBanner, sUseDNS, sHostbasedAuthentication,
+ sBanner, sShowPatchLevel, sUseDNS, sHostbasedAuthentication,
sHostbasedUsesNameFromPacketOnly, sHostbasedAcceptedKeyTypes,
sHostKeyAlgorithms,
sClientAliveInterval, sClientAliveCountMax, sAuthorizedKeysFile,
@@ -528,6 +531,7 @@ static struct {
{ "maxauthtries", sMaxAuthTries, SSHCFG_ALL },
{ "maxsessions", sMaxSessions, SSHCFG_ALL },
{ "banner", sBanner, SSHCFG_ALL },
+ { "showpatchlevel", sShowPatchLevel, SSHCFG_GLOBAL },
{ "usedns", sUseDNS, SSHCFG_GLOBAL },
{ "verifyreversemapping", sDeprecated, SSHCFG_GLOBAL },
{ "reversemappingcheck", sDeprecated, SSHCFG_GLOBAL },
@@ -1369,6 +1373,10 @@ process_server_config_line(ServerOptions
intptr = &options->disable_forwarding;
goto parse_flag;
+ case sShowPatchLevel:
+ intptr = &options->show_patchlevel;
+ goto parse_flag;
+
case sAllowUsers:
while ((arg = strdelim(&cp)) && *arg != '\0') {
if (match_user(NULL, NULL, NULL, arg) == -1)
@@ -2269,6 +2277,7 @@ dump_config(ServerOptions *o)
dump_cfg_fmtint(sEmptyPasswd, o->permit_empty_passwd);
dump_cfg_fmtint(sCompression, o->compression);
dump_cfg_fmtint(sGatewayPorts, o->fwd_opts.gateway_ports);
+ dump_cfg_fmtint(sShowPatchLevel, o->show_patchlevel);
dump_cfg_fmtint(sUseDNS, o->use_dns);
dump_cfg_fmtint(sAllowTcpForwarding, o->allow_tcp_forwarding);
dump_cfg_fmtint(sAllowAgentForwarding, o->allow_agent_forwarding);
diff -up openssh-7.4p1/servconf.h.vendor openssh-7.4p1/servconf.h
--- openssh-7.4p1/servconf.h.vendor 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/servconf.h 2016-12-23 13:34:51.694253847 +0100
@@ -149,6 +149,7 @@ typedef struct {
int max_authtries;
int max_sessions;
char *banner; /* SSH-2 banner message */
+ int show_patchlevel; /* Show vendor patch level to clients */
int use_dns;
int client_alive_interval; /*
* poke the client this often to
diff -up openssh-7.4p1/sshd_config.5.vendor openssh-7.4p1/sshd_config.5
--- openssh-7.4p1/sshd_config.5.vendor 2016-12-23 13:34:51.695253847 +0100
+++ openssh-7.4p1/sshd_config.5 2016-12-23 13:37:17.482282253 +0100
@@ -1334,6 +1334,13 @@ an OpenSSH Key Revocation List (KRL) as
.Cm AcceptEnv
or
.Cm PermitUserEnvironment .
+.It Cm ShowPatchLevel
+Specifies whether
+.Nm sshd
+will display the patch level of the binary in the identification string.
+The patch level is set at compile-time.
+The default is
+.Dq no .
.It Cm StreamLocalBindMask
Sets the octal file creation mode mask
.Pq umask
diff -up openssh-7.4p1/sshd_config.vendor openssh-7.4p1/sshd_config
--- openssh-7.4p1/sshd_config.vendor 2016-12-23 13:34:51.690253846 +0100
+++ openssh-7.4p1/sshd_config 2016-12-23 13:34:51.695253847 +0100
@@ -105,6 +105,7 @@ X11Forwarding yes
#Compression delayed
#ClientAliveInterval 0
#ClientAliveCountMax 3
+#ShowPatchLevel no
#UseDNS no
#PidFile /var/run/sshd.pid
#MaxStartups 10:30:100
diff -up openssh-7.4p1/sshd.c.vendor openssh-7.4p1/sshd.c
--- openssh-7.4p1/sshd.c.vendor 2016-12-23 13:34:51.682253844 +0100
+++ openssh-7.4p1/sshd.c 2016-12-23 13:38:32.434296856 +0100
@@ -367,7 +367,8 @@ sshd_exchange_identification(struct ssh
char remote_version[256]; /* Must be at least as big as buf. */
xasprintf(&server_version_string, "SSH-%d.%d-%.100s%s%s\r\n",
- PROTOCOL_MAJOR_2, PROTOCOL_MINOR_2, SSH_VERSION,
+ PROTOCOL_MAJOR_2, PROTOCOL_MINOR_2,
+ (options.show_patchlevel == 1) ? SSH_VENDOR_PATCHLEVEL : SSH_VERSION,
*options.version_addendum == '\0' ? "" : " ",
options.version_addendum);
@@ -1650,7 +1651,8 @@ main(int ac, char **av)
exit(1);
}
- debug("sshd version %s, %s", SSH_VERSION,
+ debug("sshd version %s, %s",
+ (options.show_patchlevel == 1) ? SSH_VENDOR_PATCHLEVEL : SSH_VERSION,
#ifdef WITH_OPENSSL
SSLeay_version(SSLEAY_VERSION)
#else

101
SOURCES/openssh-6.3p1-ctr-evp-fast.patch Normal file
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@ -0,0 +1,101 @@
diff -up openssh-5.9p1/cipher-ctr.c.ctr-evp openssh-5.9p1/cipher-ctr.c
--- openssh-5.9p1/cipher-ctr.c.ctr-evp 2012-01-11 09:24:06.000000000 +0100
+++ openssh-5.9p1/cipher-ctr.c 2012-01-11 15:54:04.675956600 +0100
@@ -38,7 +38,7 @@ void ssh_aes_ctr_iv(EVP_CIPHER_CTX *, in
struct ssh_aes_ctr_ctx
{
- AES_KEY aes_ctx;
+ EVP_CIPHER_CTX ecbctx;
u_char aes_counter[AES_BLOCK_SIZE];
};
@@ -63,21 +63,42 @@ ssh_aes_ctr(EVP_CIPHER_CTX *ctx, u_char
{
struct ssh_aes_ctr_ctx *c;
size_t n = 0;
- u_char buf[AES_BLOCK_SIZE];
+ u_char ctrbuf[AES_BLOCK_SIZE*256];
+ u_char buf[AES_BLOCK_SIZE*256];
if (len == 0)
return (1);
if ((c = EVP_CIPHER_CTX_get_app_data(ctx)) == NULL)
return (0);
- while ((len--) > 0) {
+ for (; len > 0; len -= sizeof(u_int)) {
+ u_int r,a,b;
+
if (n == 0) {
- AES_encrypt(c->aes_counter, buf, &c->aes_ctx);
- ssh_ctr_inc(c->aes_counter, AES_BLOCK_SIZE);
+ int outl, i, buflen;
+
+ buflen = MIN(len, sizeof(ctrbuf));
+
+ for(i = 0; i < buflen; i += AES_BLOCK_SIZE) {
+ memcpy(&ctrbuf[i], c->aes_counter, AES_BLOCK_SIZE);
+ ssh_ctr_inc(c->aes_counter, AES_BLOCK_SIZE);
+ }
+
+ EVP_EncryptUpdate(&c->ecbctx, buf, &outl,
+ ctrbuf, buflen);
}
- *(dest++) = *(src++) ^ buf[n];
- n = (n + 1) % AES_BLOCK_SIZE;
+
+ memcpy(&a, src, sizeof(a));
+ memcpy(&b, &buf[n], sizeof(b));
+ r = a ^ b;
+ memcpy(dest, &r, sizeof(r));
+ src += sizeof(a);
+ dest += sizeof(r);
+
+ n = (n + sizeof(b)) % sizeof(buf);
}
+ memset(ctrbuf, '\0', sizeof(ctrbuf));
+ memset(buf, '\0', sizeof(buf));
return (1);
}
@@ -91,9 +112,28 @@ ssh_aes_ctr_init(EVP_CIPHER_CTX *ctx, co
c = xmalloc(sizeof(*c));
EVP_CIPHER_CTX_set_app_data(ctx, c);
}
- if (key != NULL)
- AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
- &c->aes_ctx);
+
+ EVP_CIPHER_CTX_init(&c->ecbctx);
+
+ if (key != NULL) {
+ const EVP_CIPHER *cipher;
+ switch(EVP_CIPHER_CTX_key_length(ctx)*8) {
+ case 128:
+ cipher = EVP_aes_128_ecb();
+ break;
+ case 192:
+ cipher = EVP_aes_192_ecb();
+ break;
+ case 256:
+ cipher = EVP_aes_256_ecb();
+ break;
+ default:
+ fatal("ssh_aes_ctr_init: wrong aes key length");
+ }
+ if(!EVP_EncryptInit_ex(&c->ecbctx, cipher, NULL, key, NULL))
+ fatal("ssh_aes_ctr_init: cannot initialize aes encryption");
+ EVP_CIPHER_CTX_set_padding(&c->ecbctx, 0);
+ }
if (iv != NULL)
memcpy(c->aes_counter, iv, AES_BLOCK_SIZE);
return (1);
@@ -105,6 +145,7 @@ ssh_aes_ctr_cleanup(EVP_CIPHER_CTX *ctx)
struct ssh_aes_ctr_ctx *c;
if ((c = EVP_CIPHER_CTX_get_app_data(ctx)) != NULL) {
+ EVP_CIPHER_CTX_cleanup(&c->ecbctx);
memset(c, 0, sizeof(*c));
free(c);
EVP_CIPHER_CTX_set_app_data(ctx, NULL);

16
SOURCES/openssh-6.4p1-fromto-remote.patch Normal file
View File

@ -0,0 +1,16 @@
diff --git a/scp.c b/scp.c
index d98fa67..25d347b 100644
--- a/scp.c
+++ b/scp.c
@@ -638,7 +638,10 @@ toremote(char *targ, int argc, char **argv)
addargs(&alist, "%s", ssh_program);
addargs(&alist, "-x");
addargs(&alist, "-oClearAllForwardings=yes");
- addargs(&alist, "-n");
+ if (isatty(fileno(stdin)))
+ addargs(&alist, "-t");
+ else
+ addargs(&alist, "-n");
for (j = 0; j < remote_remote_args.num; j++) {
addargs(&alist, "%s",
remote_remote_args.list[j]);

263
SOURCES/openssh-6.6.1p1-log-in-chroot.patch Normal file
View File

@ -0,0 +1,263 @@
diff -up openssh-7.4p1/log.c.log-in-chroot openssh-7.4p1/log.c
--- openssh-7.4p1/log.c.log-in-chroot 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/log.c 2016-12-23 15:14:33.330168088 +0100
@@ -250,6 +250,11 @@ debug3(const char *fmt,...)
void
log_init(char *av0, LogLevel level, SyslogFacility facility, int on_stderr)
{
+ log_init_handler(av0, level, facility, on_stderr, 1);
+}
+
+void
+log_init_handler(char *av0, LogLevel level, SyslogFacility facility, int on_stderr, int reset_handler) {
#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
struct syslog_data sdata = SYSLOG_DATA_INIT;
#endif
@@ -273,8 +278,10 @@ log_init(char *av0, LogLevel level, Sysl
exit(1);
}
- log_handler = NULL;
- log_handler_ctx = NULL;
+ if (reset_handler) {
+ log_handler = NULL;
+ log_handler_ctx = NULL;
+ }
log_on_stderr = on_stderr;
if (on_stderr)
diff -up openssh-7.4p1/log.h.log-in-chroot openssh-7.4p1/log.h
--- openssh-7.4p1/log.h.log-in-chroot 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/log.h 2016-12-23 15:14:33.330168088 +0100
@@ -49,6 +49,7 @@ typedef enum {
typedef void (log_handler_fn)(LogLevel, const char *, void *);
void log_init(char *, LogLevel, SyslogFacility, int);
+void log_init_handler(char *, LogLevel, SyslogFacility, int, int);
LogLevel log_level_get(void);
int log_change_level(LogLevel);
int log_is_on_stderr(void);
diff -up openssh-7.4p1/monitor.c.log-in-chroot openssh-7.4p1/monitor.c
--- openssh-7.4p1/monitor.c.log-in-chroot 2016-12-23 15:14:33.311168085 +0100
+++ openssh-7.4p1/monitor.c 2016-12-23 15:16:42.154193100 +0100
@@ -307,6 +307,8 @@ monitor_child_preauth(Authctxt *_authctx
close(pmonitor->m_log_sendfd);
pmonitor->m_log_sendfd = pmonitor->m_recvfd = -1;
+ pmonitor->m_state = "preauth";
+
authctxt = _authctxt;
memset(authctxt, 0, sizeof(*authctxt));
ssh->authctxt = authctxt;
@@ -405,6 +407,8 @@ monitor_child_postauth(struct monitor *p
close(pmonitor->m_recvfd);
pmonitor->m_recvfd = -1;
+ pmonitor->m_state = "postauth";
+
monitor_set_child_handler(pmonitor->m_pid);
signal(SIGHUP, &monitor_child_handler);
signal(SIGTERM, &monitor_child_handler);
@@ -472,7 +476,7 @@ monitor_read_log(struct monitor *pmonito
if (log_level_name(level) == NULL)
fatal("%s: invalid log level %u (corrupted message?)",
__func__, level);
- do_log2(level, "%s [preauth]", msg);
+ do_log2(level, "%s [%s]", msg, pmonitor->m_state);
sshbuf_free(logmsg);
free(msg);
@@ -1719,13 +1723,28 @@ monitor_init(void)
mon = xcalloc(1, sizeof(*mon));
monitor_openfds(mon, 1);
+ mon->m_state = "";
+
return mon;
}
void
-monitor_reinit(struct monitor *mon)
+monitor_reinit(struct monitor *mon, const char *chroot_dir)
{
- monitor_openfds(mon, 0);
+ struct stat dev_log_stat;
+ char *dev_log_path;
+ int do_logfds = 0;
+
+ if (chroot_dir != NULL) {
+ xasprintf(&dev_log_path, "%s/dev/log", chroot_dir);
+
+ if (stat(dev_log_path, &dev_log_stat) != 0) {
+ debug("%s: /dev/log doesn't exist in %s chroot - will try to log via monitor using [postauth] suffix", __func__, chroot_dir);
+ do_logfds = 1;
+ }
+ free(dev_log_path);
+ }
+ monitor_openfds(mon, do_logfds);
}
#ifdef GSSAPI
diff -up openssh-7.4p1/monitor.h.log-in-chroot openssh-7.4p1/monitor.h
--- openssh-7.4p1/monitor.h.log-in-chroot 2016-12-23 15:14:33.330168088 +0100
+++ openssh-7.4p1/monitor.h 2016-12-23 15:16:28.372190424 +0100
@@ -83,10 +83,11 @@ struct monitor {
int m_log_sendfd;
struct kex **m_pkex;
pid_t m_pid;
+ char *m_state;
};
struct monitor *monitor_init(void);
-void monitor_reinit(struct monitor *);
+void monitor_reinit(struct monitor *, const char *);
struct Authctxt;
void monitor_child_preauth(struct Authctxt *, struct monitor *);
diff -up openssh-7.4p1/session.c.log-in-chroot openssh-7.4p1/session.c
--- openssh-7.4p1/session.c.log-in-chroot 2016-12-23 15:14:33.319168086 +0100
+++ openssh-7.4p1/session.c 2016-12-23 15:18:18.742211853 +0100
@@ -160,6 +160,7 @@ login_cap_t *lc;
static int is_child = 0;
static int in_chroot = 0;
+static int have_dev_log = 1;
/* File containing userauth info, if ExposeAuthInfo set */
static char *auth_info_file = NULL;
@@ -619,6 +620,7 @@ do_exec(Session *s, const char *command)
int ret;
const char *forced = NULL, *tty = NULL;
char session_type[1024];
+ struct stat dev_log_stat;
if (options.adm_forced_command) {
original_command = command;
@@ -676,6 +678,10 @@ do_exec(Session *s, const char *command)
tty += 5;
}
+ if (lstat("/dev/log", &dev_log_stat) != 0) {
+ have_dev_log = 0;
+ }
+
verbose("Starting session: %s%s%s for %s from %.200s port %d id %d",
session_type,
tty == NULL ? "" : " on ",
@@ -1486,14 +1492,6 @@ child_close_fds(void)
* descriptors left by system functions. They will be closed later.
*/
endpwent();
-
- /*
- * Close any extra open file descriptors so that we don't have them
- * hanging around in clients. Note that we want to do this after
- * initgroups, because at least on Solaris 2.3 it leaves file
- * descriptors open.
- */
- closefrom(STDERR_FILENO + 1);
}
/*
@@ -1629,8 +1627,6 @@ do_child(Session *s, const char *command
exit(1);
}
- closefrom(STDERR_FILENO + 1);
-
do_rc_files(ssh, s, shell);
/* restore SIGPIPE for child */
@@ -1653,9 +1649,17 @@ do_child(Session *s, const char *command
argv[i] = NULL;
optind = optreset = 1;
__progname = argv[0];
- exit(sftp_server_main(i, argv, s->pw));
+ exit(sftp_server_main(i, argv, s->pw, have_dev_log));
}
+ /*
+ * Close any extra open file descriptors so that we don't have them
+ * hanging around in clients. Note that we want to do this after
+ * initgroups, because at least on Solaris 2.3 it leaves file
+ * descriptors open.
+ */
+ closefrom(STDERR_FILENO + 1);
+
fflush(NULL);
/* Get the last component of the shell name. */
diff -up openssh-7.4p1/sftp.h.log-in-chroot openssh-7.4p1/sftp.h
--- openssh-7.4p1/sftp.h.log-in-chroot 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/sftp.h 2016-12-23 15:14:33.331168088 +0100
@@ -97,5 +97,5 @@
struct passwd;
-int sftp_server_main(int, char **, struct passwd *);
+int sftp_server_main(int, char **, struct passwd *, int);
void sftp_server_cleanup_exit(int) __attribute__((noreturn));
diff -up openssh-7.4p1/sftp-server.c.log-in-chroot openssh-7.4p1/sftp-server.c
--- openssh-7.4p1/sftp-server.c.log-in-chroot 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/sftp-server.c 2016-12-23 15:14:33.331168088 +0100
@@ -1497,7 +1497,7 @@ sftp_server_usage(void)
}
int
-sftp_server_main(int argc, char **argv, struct passwd *user_pw)
+sftp_server_main(int argc, char **argv, struct passwd *user_pw, int reset_handler)
{
fd_set *rset, *wset;
int i, r, in, out, max, ch, skipargs = 0, log_stderr = 0;
@@ -1511,7 +1511,7 @@ sftp_server_main(int argc, char **argv,
ssh_malloc_init(); /* must be called before any mallocs */
__progname = ssh_get_progname(argv[0]);
- log_init(__progname, log_level, log_facility, log_stderr);
+ log_init_handler(__progname, log_level, log_facility, log_stderr, reset_handler);
pw = pwcopy(user_pw);
@@ -1582,7 +1582,7 @@ sftp_server_main(int argc, char **argv,
}
}
- log_init(__progname, log_level, log_facility, log_stderr);
+ log_init_handler(__progname, log_level, log_facility, log_stderr, reset_handler);
/*
* On platforms where we can, avoid making /proc/self/{mem,maps}
diff -up openssh-7.4p1/sftp-server-main.c.log-in-chroot openssh-7.4p1/sftp-server-main.c
--- openssh-7.4p1/sftp-server-main.c.log-in-chroot 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/sftp-server-main.c 2016-12-23 15:14:33.331168088 +0100
@@ -49,5 +49,5 @@ main(int argc, char **argv)
return 1;
}
- return (sftp_server_main(argc, argv, user_pw));
+ return (sftp_server_main(argc, argv, user_pw, 0));
}
diff -up openssh-7.4p1/sshd.c.log-in-chroot openssh-7.4p1/sshd.c
--- openssh-7.4p1/sshd.c.log-in-chroot 2016-12-23 15:14:33.328168088 +0100
+++ openssh-7.4p1/sshd.c 2016-12-23 15:14:33.332168088 +0100
@@ -650,7 +650,7 @@ privsep_postauth(Authctxt *authctxt)
}
/* New socket pair */
- monitor_reinit(pmonitor);
+ monitor_reinit(pmonitor, options.chroot_directory);
pmonitor->m_pid = fork();
if (pmonitor->m_pid == -1)
@@ -668,6 +668,11 @@ privsep_postauth(Authctxt *authctxt)
close(pmonitor->m_sendfd);
pmonitor->m_sendfd = -1;
+ close(pmonitor->m_log_recvfd);
+ pmonitor->m_log_recvfd = -1;
+
+ if (pmonitor->m_log_sendfd != -1)
+ set_log_handler(mm_log_handler, pmonitor);
/* Demote the private keys to public keys. */
demote_sensitive_data();

14
SOURCES/openssh-6.6.1p1-scp-non-existing-directory.patch Normal file
View File

@ -0,0 +1,14 @@
--- a/scp.c
+++ a/scp.c
@@ -1084,6 +1084,10 @@ sink(int argc, char **argv)
free(vect[0]);
continue;
}
+ if (buf[0] == 'C' && ! exists && np[strlen(np)-1] == '/') {
+ errno = ENOTDIR;
+ goto bad;
+ }
omode = mode;
mode |= S_IWUSR;
if ((ofd = open(np, O_WRONLY|O_CREAT, mode)) < 0) {
--

126
SOURCES/openssh-6.6.1p1-selinux-contexts.patch Normal file
View File

@ -0,0 +1,126 @@
diff --git a/openbsd-compat/port-linux-sshd.c b/openbsd-compat/port-linux-sshd.c
index 8f32464..18a2ca4 100644
--- a/openbsd-compat/port-linux-sshd.c
+++ b/openbsd-compat/port-linux-sshd.c
@@ -32,6 +32,7 @@
#include "misc.h" /* servconf.h needs misc.h for struct ForwardOptions */
#include "servconf.h"
#include "port-linux.h"
+#include "misc.h"
#include "sshkey.h"
#include "hostfile.h"
#include "auth.h"
@@ -445,7 +446,7 @@ sshd_selinux_setup_exec_context(char *pwname)
void
sshd_selinux_copy_context(void)
{
- security_context_t *ctx;
+ char *ctx;
if (!sshd_selinux_enabled())
return;
@@ -461,6 +462,58 @@ sshd_selinux_copy_context(void)
}
}
+void
+sshd_selinux_change_privsep_preauth_context(void)
+{
+ int len;
+ char line[1024], *preauth_context = NULL, *cp, *arg;
+ const char *contexts_path;
+ FILE *contexts_file;
+
+ contexts_path = selinux_openssh_contexts_path();
+ if (contexts_path != NULL) {
+ if ((contexts_file = fopen(contexts_path, "r")) != NULL) {
+ struct stat sb;
+
+ if (fstat(fileno(contexts_file), &sb) == 0 && ((sb.st_uid == 0) && ((sb.st_mode & 022) == 0))) {
+ while (fgets(line, sizeof(line), contexts_file)) {
+ /* Strip trailing whitespace */
+ for (len = strlen(line) - 1; len > 0; len--) {
+ if (strchr(" \t\r\n", line[len]) == NULL)
+ break;
+ line[len] = '\0';
+ }
+
+ if (line[0] == '\0')
+ continue;
+
+ cp = line;
+ arg = strdelim(&cp);
+ if (arg && *arg == '\0')
+ arg = strdelim(&cp);
+
+ if (arg && strcmp(arg, "privsep_preauth") == 0) {
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0') {
+ debug("%s: privsep_preauth is empty", __func__);
+ fclose(contexts_file);
+ return;
+ }
+ preauth_context = xstrdup(arg);
+ }
+ }
+ }
+ fclose(contexts_file);
+ }
+ }
+
+ if (preauth_context == NULL)
+ preauth_context = xstrdup("sshd_net_t");
+
+ ssh_selinux_change_context(preauth_context);
+ free(preauth_context);
+}
+
#endif
#endif
diff --git a/openbsd-compat/port-linux.c b/openbsd-compat/port-linux.c
index 22ea8ef..1fc963d 100644
--- a/openbsd-compat/port-linux.c
+++ b/openbsd-compat/port-linux.c
@@ -26,6 +26,7 @@
#include <stdarg.h>
#include <string.h>
#include <stdio.h>
+#include <stdlib.h>
#include "log.h"
#include "xmalloc.h"
@@ -179,7 +179,7 @@ ssh_selinux_change_context(const char *newname)
strlcpy(newctx + len, newname, newlen - len);
if ((cx = index(cx + 1, ':')))
strlcat(newctx, cx, newlen);
- debug3("%s: setting context from '%s' to '%s'", __func__,
+ debug("%s: setting context from '%s' to '%s'", __func__,
oldctx, newctx);
if (setcon(newctx) < 0)
switchlog("%s: setcon %s from %s failed with %s", __func__,
diff --git a/openbsd-compat/port-linux.h b/openbsd-compat/port-linux.h
index cb51f99..8b7cda2 100644
--- a/openbsd-compat/port-linux.h
+++ b/openbsd-compat/port-linux.h
@@ -29,6 +29,7 @@ int sshd_selinux_enabled(void);
void sshd_selinux_copy_context(void);
void sshd_selinux_setup_exec_context(char *);
int sshd_selinux_setup_env_variables(void);
+void sshd_selinux_change_privsep_preauth_context(void);
#endif
#ifdef LINUX_OOM_ADJUST
diff --git a/sshd.c b/sshd.c
index 2871fe9..39b9c08 100644
--- a/sshd.c
+++ b/sshd.c
@@ -629,7 +629,7 @@ privsep_preauth_child(void)
demote_sensitive_data();
#ifdef WITH_SELINUX
- ssh_selinux_change_context("sshd_net_t");
+ sshd_selinux_change_privsep_preauth_context();
#endif
/* Demote the child */

129
SOURCES/openssh-6.6p1-GSSAPIEnablek5users.patch Normal file
View File

@ -0,0 +1,129 @@
diff -up openssh-7.4p1/gss-serv-krb5.c.GSSAPIEnablek5users openssh-7.4p1/gss-serv-krb5.c
--- openssh-7.4p1/gss-serv-krb5.c.GSSAPIEnablek5users 2016-12-23 15:18:40.615216100 +0100
+++ openssh-7.4p1/gss-serv-krb5.c 2016-12-23 15:18:40.628216102 +0100
@@ -279,7 +279,6 @@ ssh_gssapi_krb5_cmdok(krb5_principal pri
FILE *fp;
char file[MAXPATHLEN];
char *line = NULL;
- char kuser[65]; /* match krb5_kuserok() */
struct stat st;
struct passwd *pw = the_authctxt->pw;
int found_principal = 0;
@@ -288,7 +287,7 @@ ssh_gssapi_krb5_cmdok(krb5_principal pri
snprintf(file, sizeof(file), "%s/.k5users", pw->pw_dir);
/* If both .k5login and .k5users DNE, self-login is ok. */
- if (!k5login_exists && (access(file, F_OK) == -1)) {
+ if ( !options.enable_k5users || (!k5login_exists && (access(file, F_OK) == -1))) {
return ssh_krb5_kuserok(krb_context, principal, luser,
k5login_exists);
}
diff -up openssh-7.4p1/servconf.c.GSSAPIEnablek5users openssh-7.4p1/servconf.c
--- openssh-7.4p1/servconf.c.GSSAPIEnablek5users 2016-12-23 15:18:40.615216100 +0100
+++ openssh-7.4p1/servconf.c 2016-12-23 15:35:36.354401156 +0100
@@ -168,6 +168,7 @@ initialize_server_options(ServerOptions
options->gss_strict_acceptor = -1;
options->gss_store_rekey = -1;
options->use_kuserok = -1;
+ options->enable_k5users = -1;
options->password_authentication = -1;
options->kbd_interactive_authentication = -1;
options->challenge_response_authentication = -1;
@@ -345,6 +346,8 @@ fill_default_server_options(ServerOption
options->gss_store_rekey = 0;
if (options->use_kuserok == -1)
options->use_kuserok = 1;
+ if (options->enable_k5users == -1)
+ options->enable_k5users = 0;
if (options->password_authentication == -1)
options->password_authentication = 1;
if (options->kbd_interactive_authentication == -1)
@@ -418,7 +421,7 @@ typedef enum {
sHostbasedUsesNameFromPacketOnly, sHostbasedAcceptedKeyTypes,
sHostKeyAlgorithms,
sClientAliveInterval, sClientAliveCountMax, sAuthorizedKeysFile,
- sGssAuthentication, sGssCleanupCreds, sGssStrictAcceptor,
+ sGssAuthentication, sGssCleanupCreds, sGssEnablek5users, sGssStrictAcceptor,
sGssKeyEx, sGssStoreRekey, sAcceptEnv, sSetEnv, sPermitTunnel,
sMatch, sPermitOpen, sPermitListen, sForceCommand, sChrootDirectory,
sUsePrivilegeSeparation, sAllowAgentForwarding,
@@ -497,12 +500,14 @@ static struct {
{ "gssapistrictacceptorcheck", sGssStrictAcceptor, SSHCFG_GLOBAL },
{ "gssapikeyexchange", sGssKeyEx, SSHCFG_GLOBAL },
{ "gssapistorecredentialsonrekey", sGssStoreRekey, SSHCFG_GLOBAL },
+ { "gssapienablek5users", sGssEnablek5users, SSHCFG_ALL },
#else
{ "gssapiauthentication", sUnsupported, SSHCFG_ALL },
{ "gssapicleanupcredentials", sUnsupported, SSHCFG_GLOBAL },
{ "gssapistrictacceptorcheck", sUnsupported, SSHCFG_GLOBAL },
{ "gssapikeyexchange", sUnsupported, SSHCFG_GLOBAL },
{ "gssapistorecredentialsonrekey", sUnsupported, SSHCFG_GLOBAL },
+ { "gssapienablek5users", sUnsupported, SSHCFG_ALL },
#endif
{ "gssusesessionccache", sUnsupported, SSHCFG_GLOBAL },
{ "gssapiusesessioncredcache", sUnsupported, SSHCFG_GLOBAL },
@@ -1653,6 +1658,10 @@ process_server_config_line(ServerOptions
intptr = &options->use_kuserok;
goto parse_flag;
+ case sGssEnablek5users:
+ intptr = &options->enable_k5users;
+ goto parse_flag;
+
case sPermitListen:
case sPermitOpen:
if (opcode == sPermitListen) {
@@ -2026,6 +2035,7 @@ copy_set_server_options(ServerOptions *d
M_CP_INTOPT(ip_qos_interactive);
M_CP_INTOPT(ip_qos_bulk);
M_CP_INTOPT(use_kuserok);
+ M_CP_INTOPT(enable_k5users);
M_CP_INTOPT(rekey_limit);
M_CP_INTOPT(rekey_interval);
M_CP_INTOPT(log_level);
@@ -2320,6 +2330,7 @@ dump_config(ServerOptions *o)
# endif
dump_cfg_fmtint(sKerberosUniqueCCache, o->kerberos_unique_ccache);
dump_cfg_fmtint(sKerberosUseKuserok, o->use_kuserok);
+ dump_cfg_fmtint(sGssEnablek5users, o->enable_k5users);
#endif
#ifdef GSSAPI
dump_cfg_fmtint(sGssAuthentication, o->gss_authentication);
diff -up openssh-7.4p1/servconf.h.GSSAPIEnablek5users openssh-7.4p1/servconf.h
--- openssh-7.4p1/servconf.h.GSSAPIEnablek5users 2016-12-23 15:18:40.616216100 +0100
+++ openssh-7.4p1/servconf.h 2016-12-23 15:18:40.629216102 +0100
@@ -174,6 +174,7 @@ typedef struct {
int kerberos_unique_ccache; /* If true, the acquired ticket will
* be stored in per-session ccache */
int use_kuserok;
+ int enable_k5users;
int gss_authentication; /* If true, permit GSSAPI authentication */
int gss_keyex; /* If true, permit GSSAPI key exchange */
int gss_cleanup_creds; /* If true, destroy cred cache on logout */
diff -up openssh-7.4p1/sshd_config.5.GSSAPIEnablek5users openssh-7.4p1/sshd_config.5
--- openssh-7.4p1/sshd_config.5.GSSAPIEnablek5users 2016-12-23 15:18:40.630216103 +0100
+++ openssh-7.4p1/sshd_config.5 2016-12-23 15:36:21.607408435 +0100
@@ -628,6 +628,12 @@ Specifies whether to automatically destr
on logout.
The default is
.Cm yes .
+.It Cm GSSAPIEnablek5users
+Specifies whether to look at .k5users file for GSSAPI authentication
+access control. Further details are described in
+.Xr ksu 1 .
+The default is
+.Cm no .
.It Cm GSSAPIKeyExchange
Specifies whether key exchange based on GSSAPI is allowed. GSSAPI key exchange
doesn't rely on ssh keys to verify host identity.
diff -up openssh-7.4p1/sshd_config.GSSAPIEnablek5users openssh-7.4p1/sshd_config
--- openssh-7.4p1/sshd_config.GSSAPIEnablek5users 2016-12-23 15:18:40.616216100 +0100
+++ openssh-7.4p1/sshd_config 2016-12-23 15:18:40.631216103 +0100
@@ -80,6 +80,7 @@ GSSAPIAuthentication yes
GSSAPICleanupCredentials no
#GSSAPIStrictAcceptorCheck yes
#GSSAPIKeyExchange no
+#GSSAPIEnablek5users no
# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will

39
SOURCES/openssh-6.6p1-allow-ip-opts.patch Normal file
View File

@ -0,0 +1,39 @@
diff -up openssh/sshd.c.ip-opts openssh/sshd.c
--- openssh/sshd.c.ip-opts 2016-07-25 13:58:48.998507834 +0200
+++ openssh/sshd.c 2016-07-25 14:01:28.346469878 +0200
@@ -1507,12 +1507,29 @@ check_ip_options(struct ssh *ssh)
if (getsockopt(sock_in, IPPROTO_IP, IP_OPTIONS, opts,
&option_size) >= 0 && option_size != 0) {
- text[0] = '\0';
- for (i = 0; i < option_size; i++)
- snprintf(text + i*3, sizeof(text) - i*3,
- " %2.2x", opts[i]);
- fatal("Connection from %.100s port %d with IP opts: %.800s",
- ssh_remote_ipaddr(ssh), ssh_remote_port(ssh), text);
+ i = 0;
+ do {
+ switch (opts[i]) {
+ case 0:
+ case 1:
+ ++i;
+ break;
+ case 130:
+ case 133:
+ case 134:
+ i += opts[i + 1];
+ break;
+ default:
+ /* Fail, fatally, if we detect either loose or strict
+ * source routing options. */
+ text[0] = '\0';
+ for (i = 0; i < option_size; i++)
+ snprintf(text + i*3, sizeof(text) - i*3,
+ " %2.2x", opts[i]);
+ fatal("Connection from %.100s port %d with IP options:%.800s",
+ ssh_remote_ipaddr(ssh), ssh_remote_port(ssh), text);
+ }
+ } while (i < option_size);
}
return;
#endif /* IP_OPTIONS */

257
SOURCES/openssh-6.6p1-ctr-cavstest.patch Normal file
View File

@ -0,0 +1,257 @@
diff -up openssh-6.8p1/Makefile.in.ctr-cavs openssh-6.8p1/Makefile.in
--- openssh-6.8p1/Makefile.in.ctr-cavs 2015-03-18 11:22:05.493289018 +0100
+++ openssh-6.8p1/Makefile.in 2015-03-18 11:22:44.504196316 +0100
@@ -28,6 +28,7 @@ SSH_KEYSIGN=$(libexecdir)/ssh-keysign
SSH_LDAP_HELPER=$(libexecdir)/ssh-ldap-helper
SSH_LDAP_WRAPPER=$(libexecdir)/ssh-ldap-wrapper
SSH_KEYCAT=$(libexecdir)/ssh-keycat
+CTR_CAVSTEST=$(libexecdir)/ctr-cavstest
SSH_PKCS11_HELPER=$(libexecdir)/ssh-pkcs11-helper
PRIVSEP_PATH=@PRIVSEP_PATH@
SSH_PRIVSEP_USER=@SSH_PRIVSEP_USER@
@@ -66,7 +67,7 @@ EXEEXT=@EXEEXT@
MKDIR_P=@MKDIR_P@
INSTALL_SSH_LDAP_HELPER=@INSTALL_SSH_LDAP_HELPER@
-TARGETS=ssh$(EXEEXT) sshd$(EXEEXT) ssh-add$(EXEEXT) ssh-keygen$(EXEEXT) ssh-keyscan${EXEEXT} ssh-keysign${EXEEXT} ssh-pkcs11-helper$(EXEEXT) ssh-agent$(EXEEXT) scp$(EXEEXT) sftp-server$(EXEEXT) sftp$(EXEEXT) ssh-ldap-helper$(EXEEXT) ssh-keycat$(EXEEXT)
+TARGETS=ssh$(EXEEXT) sshd$(EXEEXT) ssh-add$(EXEEXT) ssh-keygen$(EXEEXT) ssh-keyscan${EXEEXT} ssh-keysign${EXEEXT} ssh-pkcs11-helper$(EXEEXT) ssh-agent$(EXEEXT) scp$(EXEEXT) sftp-server$(EXEEXT) sftp$(EXEEXT) ssh-ldap-helper$(EXEEXT) ssh-keycat$(EXEEXT) ctr-cavstest$(EXEEXT)
XMSS_OBJS=\
ssh-xmss.o \
@@ -194,6 +195,9 @@ ssh-ldap-helper$(EXEEXT): $(LIBCOMPAT) l
ssh-keycat$(EXEEXT): $(LIBCOMPAT) $(SSHDOBJS) libssh.a ssh-keycat.o uidswap.o
$(LD) -o $@ ssh-keycat.o uidswap.o $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(KEYCATLIBS) $(LIBS)
+ctr-cavstest$(EXEEXT): $(LIBCOMPAT) libssh.a ctr-cavstest.o
+ $(LD) -o $@ ctr-cavstest.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh -lfipscheck $(LIBS)
+
ssh-keyscan$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-keyscan.o
$(LD) -o $@ ssh-keyscan.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh $(LIBS)
@@ -326,6 +330,7 @@ install-files:
$(INSTALL) -m 0700 ssh-ldap-wrapper $(DESTDIR)$(SSH_LDAP_WRAPPER) ; \
fi
$(INSTALL) -m 0755 $(STRIP_OPT) ssh-keycat$(EXEEXT) $(DESTDIR)$(libexecdir)/ssh-keycat$(EXEEXT)
+ $(INSTALL) -m 0755 $(STRIP_OPT) ctr-cavstest$(EXEEXT) $(DESTDIR)$(libexecdir)/ctr-cavstest$(EXEEXT)
$(INSTALL) -m 0755 $(STRIP_OPT) sftp$(EXEEXT) $(DESTDIR)$(bindir)/sftp$(EXEEXT)
$(INSTALL) -m 0755 $(STRIP_OPT) sftp-server$(EXEEXT) $(DESTDIR)$(SFTP_SERVER)$(EXEEXT)
$(INSTALL) -m 644 ssh.1.out $(DESTDIR)$(mandir)/$(mansubdir)1/ssh.1
diff -up openssh-6.8p1/ctr-cavstest.c.ctr-cavs openssh-6.8p1/ctr-cavstest.c
--- openssh-6.8p1/ctr-cavstest.c.ctr-cavs 2015-03-18 11:22:05.521288952 +0100
+++ openssh-6.8p1/ctr-cavstest.c 2015-03-18 11:22:05.521288952 +0100
@@ -0,0 +1,215 @@
+/*
+ *
+ * invocation (all of the following are equal):
+ * ./ctr-cavstest --algo aes128-ctr --key 987212980144b6a632e864031f52dacc --mode encrypt --data a6deca405eef2e8e4609abf3c3ccf4a6
+ * ./ctr-cavstest --algo aes128-ctr --key 987212980144b6a632e864031f52dacc --mode encrypt --data a6deca405eef2e8e4609abf3c3ccf4a6 --iv 00000000000000000000000000000000
+ * echo -n a6deca405eef2e8e4609abf3c3ccf4a6 | ./ctr-cavstest --algo aes128-ctr --key 987212980144b6a632e864031f52dacc --mode encrypt
+ */
+
+#include "includes.h"
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "xmalloc.h"
+#include "log.h"
+#include "ssherr.h"
+#include "cipher.h"
+
+/* compatibility with old or broken OpenSSL versions */
+#include "openbsd-compat/openssl-compat.h"
+
+void usage(void) {
+ fprintf(stderr, "Usage: ctr-cavstest --algo <ssh-crypto-algorithm>\n"
+ " --key <hexadecimal-key> --mode <encrypt|decrypt>\n"
+ " [--iv <hexadecimal-iv>] --data <hexadecimal-data>\n\n"
+ "Hexadecimal output is printed to stdout.\n"
+ "Hexadecimal input data can be alternatively read from stdin.\n");
+ exit(1);
+}
+
+void *fromhex(char *hex, size_t *len)
+{
+ unsigned char *bin;
+ char *p;
+ size_t n = 0;
+ int shift = 4;
+ unsigned char out = 0;
+ unsigned char *optr;
+
+ bin = xmalloc(strlen(hex)/2);
+ optr = bin;
+
+ for (p = hex; *p != '\0'; ++p) {
+ unsigned char c;
+
+ c = *p;
+ if (isspace(c))
+ continue;
+
+ if (c >= '0' && c <= '9') {
+ c = c - '0';
+ } else if (c >= 'A' && c <= 'F') {
+ c = c - 'A' + 10;
+ } else if (c >= 'a' && c <= 'f') {
+ c = c - 'a' + 10;
+ } else {
+ /* truncate on nonhex cipher */
+ break;
+ }
+
+ out |= c << shift;
+ shift = (shift + 4) % 8;
+
+ if (shift) {
+ *(optr++) = out;
+ out = 0;
+ ++n;
+ }
+ }
+
+ *len = n;
+ return bin;
+}
+
+#define READ_CHUNK 4096
+#define MAX_READ_SIZE 1024*1024*100
+char *read_stdin(void)
+{
+ char *buf;
+ size_t n, total = 0;
+
+ buf = xmalloc(READ_CHUNK);
+
+ do {
+ n = fread(buf + total, 1, READ_CHUNK, stdin);
+ if (n < READ_CHUNK) /* terminate on short read */
+ break;
+
+ total += n;
+ buf = xreallocarray(buf, total + READ_CHUNK, 1);
+ } while(total < MAX_READ_SIZE);
+ return buf;
+}
+
+int main (int argc, char *argv[])
+{
+
+ const struct sshcipher *c;
+ struct sshcipher_ctx *cc;
+ char *algo = "aes128-ctr";
+ char *hexkey = NULL;
+ char *hexiv = "00000000000000000000000000000000";
+ char *hexdata = NULL;
+ char *p;
+ int i, r;
+ int encrypt = 1;
+ void *key;
+ size_t keylen;
+ void *iv;
+ size_t ivlen;
+ void *data;
+ size_t datalen;
+ void *outdata;
+
+ for (i = 1; i < argc; ++i) {
+ if (strcmp(argv[i], "--algo") == 0) {
+ algo = argv[++i];
+ } else if (strcmp(argv[i], "--key") == 0) {
+ hexkey = argv[++i];
+ } else if (strcmp(argv[i], "--mode") == 0) {
+ ++i;
+ if (argv[i] == NULL) {
+ usage();
+ }
+ if (strncmp(argv[i], "enc", 3) == 0) {
+ encrypt = 1;
+ } else if (strncmp(argv[i], "dec", 3) == 0) {
+ encrypt = 0;
+ } else {
+ usage();
+ }
+ } else if (strcmp(argv[i], "--iv") == 0) {
+ hexiv = argv[++i];
+ } else if (strcmp(argv[i], "--data") == 0) {
+ hexdata = argv[++i];
+ }
+ }
+
+ if (hexkey == NULL || algo == NULL) {
+ usage();
+ }
+
+ SSLeay_add_all_algorithms();
+
+ c = cipher_by_name(algo);
+ if (c == NULL) {
+ fprintf(stderr, "Error: unknown algorithm\n");
+ return 2;
+ }
+
+ if (hexdata == NULL) {
+ hexdata = read_stdin();
+ } else {
+ hexdata = xstrdup(hexdata);
+ }
+
+ key = fromhex(hexkey, &keylen);
+
+ if (keylen != 16 && keylen != 24 && keylen == 32) {
+ fprintf(stderr, "Error: unsupported key length\n");
+ return 2;
+ }
+
+ iv = fromhex(hexiv, &ivlen);
+
+ if (ivlen != 16) {
+ fprintf(stderr, "Error: unsupported iv length\n");
+ return 2;
+ }
+
+ data = fromhex(hexdata, &datalen);
+
+ if (data == NULL || datalen == 0) {
+ fprintf(stderr, "Error: no data to encrypt/decrypt\n");
+ return 2;
+ }
+
+ if ((r = cipher_init(&cc, c, key, keylen, iv, ivlen, encrypt)) != 0) {
+ fprintf(stderr, "Error: cipher_init failed: %s\n", ssh_err(r));
+ return 2;
+ }
+
+ free(key);
+ free(iv);
+
+ outdata = malloc(datalen);
+ if(outdata == NULL) {
+ fprintf(stderr, "Error: memory allocation failure\n");
+ return 2;
+ }
+
+ if ((r = cipher_crypt(cc, 0, outdata, data, datalen, 0, 0)) != 0) {
+ fprintf(stderr, "Error: cipher_crypt failed: %s\n", ssh_err(r));
+ return 2;
+ }
+
+ free(data);
+
+ cipher_free(cc);
+
+ for (p = outdata; datalen > 0; ++p, --datalen) {
+ printf("%02X", (unsigned char)*p);
+ }
+
+ free(outdata);
+
+ printf("\n");
+ return 0;
+}
+

280
SOURCES/openssh-6.6p1-force_krb.patch Normal file
View File

@ -0,0 +1,280 @@
diff --git a/gss-serv-krb5.c b/gss-serv-krb5.c
index 413b845..54dd383 100644
--- a/gss-serv-krb5.c
+++ b/gss-serv-krb5.c
@@ -32,7 +32,9 @@
#include <sys/types.h>
#include <stdarg.h>
+#include <stdio.h>
#include <string.h>
+#include <unistd.h>
#include "xmalloc.h"
#include "sshkey.h"
@@ -45,6 +47,7 @@
#include "ssh-gss.h"
+extern Authctxt *the_authctxt;
extern ServerOptions options;
#ifdef HEIMDAL
@@ -56,6 +59,13 @@ extern ServerOptions options;
# include <gssapi/gssapi_krb5.h>
#endif
+/* all commands are allowed by default */
+char **k5users_allowed_cmds = NULL;
+
+static int ssh_gssapi_k5login_exists();
+static int ssh_gssapi_krb5_cmdok(krb5_principal, const char *, const char *,
+ int);
+
static krb5_context krb_context = NULL;
/* Initialise the krb5 library, for the stuff that GSSAPI won't do */
@@ -88,6 +98,7 @@ ssh_gssapi_krb5_userok(ssh_gssapi_client *client, char *name)
krb5_principal princ;
int retval;
const char *errmsg;
+ int k5login_exists;
if (ssh_gssapi_krb5_init() == 0)
return 0;
@@ -99,10 +110,22 @@ ssh_gssapi_krb5_userok(ssh_gssapi_client *client, char *name)
krb5_free_error_message(krb_context, errmsg);
return 0;
}
- if (krb5_kuserok(krb_context, princ, name)) {
+ /* krb5_kuserok() returns 1 if .k5login DNE and this is self-login.
+ * We have to make sure to check .k5users in that case. */
+ k5login_exists = ssh_gssapi_k5login_exists();
+ /* NOTE: .k5login and .k5users must opened as root, not the user,
+ * because if they are on a krb5-protected filesystem, user credentials
+ * to access these files aren't available yet. */
+ if (krb5_kuserok(krb_context, princ, name) && k5login_exists) {
retval = 1;
logit("Authorized to %s, krb5 principal %s (krb5_kuserok)",
name, (char *)client->displayname.value);
+ } else if (ssh_gssapi_krb5_cmdok(princ, client->exportedname.value,
+ name, k5login_exists)) {
+ retval = 1;
+ logit("Authorized to %s, krb5 principal %s "
+ "(ssh_gssapi_krb5_cmdok)",
+ name, (char *)client->displayname.value);
} else
retval = 0;
@@ -110,6 +133,137 @@ ssh_gssapi_krb5_userok(ssh_gssapi_client *client, char *name)
return retval;
}
+/* Test for existence of .k5login.
+ * We need this as part of our .k5users check, because krb5_kuserok()
+ * returns success if .k5login DNE and user is logging in as himself.
+ * With .k5login absent and .k5users present, we don't want absence
+ * of .k5login to authorize self-login. (absence of both is required)
+ * Returns 1 if .k5login is available, 0 otherwise.
+ */
+static int
+ssh_gssapi_k5login_exists()
+{
+ char file[MAXPATHLEN];
+ struct passwd *pw = the_authctxt->pw;
+
+ snprintf(file, sizeof(file), "%s/.k5login", pw->pw_dir);
+ return access(file, F_OK) == 0;
+}
+
+/* check .k5users for login or command authorization
+ * Returns 1 if principal is authorized, 0 otherwise.
+ * If principal is authorized, (global) k5users_allowed_cmds may be populated.
+ */
+static int
+ssh_gssapi_krb5_cmdok(krb5_principal principal, const char *name,
+ const char *luser, int k5login_exists)
+{
+ FILE *fp;
+ char file[MAXPATHLEN];
+ char *line = NULL;
+ char kuser[65]; /* match krb5_kuserok() */
+ struct stat st;
+ struct passwd *pw = the_authctxt->pw;
+ int found_principal = 0;
+ int ncommands = 0, allcommands = 0;
+ u_long linenum = 0;
+ size_t linesize = 0;
+
+ snprintf(file, sizeof(file), "%s/.k5users", pw->pw_dir);
+ /* If both .k5login and .k5users DNE, self-login is ok. */
+ if (!k5login_exists && (access(file, F_OK) == -1)) {
+ return (krb5_aname_to_localname(krb_context, principal,
+ sizeof(kuser), kuser) == 0) &&
+ (strcmp(kuser, luser) == 0);
+ }
+ if ((fp = fopen(file, "r")) == NULL) {
+ int saved_errno = errno;
+ /* 2nd access check to ease debugging if file perms are wrong.
+ * But we don't want to report this if .k5users simply DNE. */
+ if (access(file, F_OK) == 0) {
+ logit("User %s fopen %s failed: %s",
+ pw->pw_name, file, strerror(saved_errno));
+ }
+ return 0;
+ }
+ /* .k5users must be owned either by the user or by root */
+ if (fstat(fileno(fp), &st) == -1) {
+ /* can happen, but very wierd error so report it */
+ logit("User %s fstat %s failed: %s",
+ pw->pw_name, file, strerror(errno));
+ fclose(fp);
+ return 0;
+ }
+ if (!(st.st_uid == pw->pw_uid || st.st_uid == 0)) {
+ logit("User %s %s is not owned by root or user",
+ pw->pw_name, file);
+ fclose(fp);
+ return 0;
+ }
+ /* .k5users must be a regular file. krb5_kuserok() doesn't do this
+ * check, but we don't want to be deficient if they add a check. */
+ if (!S_ISREG(st.st_mode)) {
+ logit("User %s %s is not a regular file", pw->pw_name, file);
+ fclose(fp);
+ return 0;
+ }
+ /* file exists; initialize k5users_allowed_cmds (to none!) */
+ k5users_allowed_cmds = xcalloc(++ncommands,
+ sizeof(*k5users_allowed_cmds));
+
+ /* Check each line. ksu allows unlimited length lines. */
+ while (!allcommands && getline(&line, &linesize, fp) != -1) {
+ linenum++;
+ char *token;
+
+ /* we parse just like ksu, even though we could do better */
+ if ((token = strtok(line, " \t\n")) == NULL)
+ continue;
+ if (strcmp(name, token) == 0) {
+ /* we matched on client principal */
+ found_principal = 1;
+ if ((token = strtok(NULL, " \t\n")) == NULL) {
+ /* only shell is allowed */
+ k5users_allowed_cmds[ncommands-1] =
+ xstrdup(pw->pw_shell);
+ k5users_allowed_cmds =
+ xreallocarray(k5users_allowed_cmds, ++ncommands,
+ sizeof(*k5users_allowed_cmds));
+ break;
+ }
+ /* process the allowed commands */
+ while (token) {
+ if (strcmp(token, "*") == 0) {
+ allcommands = 1;
+ break;
+ }
+ k5users_allowed_cmds[ncommands-1] =
+ xstrdup(token);
+ k5users_allowed_cmds =
+ xreallocarray(k5users_allowed_cmds, ++ncommands,
+ sizeof(*k5users_allowed_cmds));
+ token = strtok(NULL, " \t\n");
+ }
+ }
+ }
+ free(line);
+ if (k5users_allowed_cmds) {
+ /* terminate vector */
+ k5users_allowed_cmds[ncommands-1] = NULL;
+ /* if all commands are allowed, free vector */
+ if (allcommands) {
+ int i;
+ for (i = 0; i < ncommands; i++) {
+ free(k5users_allowed_cmds[i]);
+ }
+ free(k5users_allowed_cmds);
+ k5users_allowed_cmds = NULL;
+ }
+ }
+ fclose(fp);
+ return found_principal;
+}
+
/* This writes out any forwarded credentials from the structure populated
* during userauth. Called after we have setuid to the user */
diff --git a/session.c b/session.c
index 28659ec..9c94d8e 100644
--- a/session.c
+++ b/session.c
@@ -789,6 +789,29 @@ do_exec(Session *s, const char *command)
command = auth_opts->force_command;
forced = "(key-option)";
}
+#ifdef GSSAPI
+#ifdef KRB5 /* k5users_allowed_cmds only available w/ GSSAPI+KRB5 */
+ else if (k5users_allowed_cmds) {
+ const char *match = command;
+ int allowed = 0, i = 0;
+
+ if (!match)
+ match = s->pw->pw_shell;
+ while (k5users_allowed_cmds[i]) {
+ if (strcmp(match, k5users_allowed_cmds[i++]) == 0) {
+ debug("Allowed command '%.900s'", match);
+ allowed = 1;
+ break;
+ }
+ }
+ if (!allowed) {
+ debug("command '%.900s' not allowed", match);
+ return 1;
+ }
+ }
+#endif
+#endif
+
if (forced != NULL) {
if (IS_INTERNAL_SFTP(command)) {
s->is_subsystem = s->is_subsystem ?
diff --git a/ssh-gss.h b/ssh-gss.h
index 0374c88..509109a 100644
--- a/ssh-gss.h
+++ b/ssh-gss.h
@@ -49,6 +49,10 @@
# endif /* !HAVE_DECL_GSS_C_NT_... */
# endif /* !HEIMDAL */
+
+/* .k5users support */
+extern char **k5users_allowed_cmds;
+
#endif /* KRB5 */
/* draft-ietf-secsh-gsskeyex-06 */
diff --git a/sshd.8 b/sshd.8
index adcaaf9..824163b 100644
--- a/sshd.8
+++ b/sshd.8
@@ -324,6 +324,7 @@ Finally, the server and the client enter an authentication dialog.
The client tries to authenticate itself using
host-based authentication,
public key authentication,
+GSSAPI authentication,
challenge-response authentication,
or password authentication.
.Pp
@@ -800,6 +801,12 @@ This file is used in exactly the same way as
but allows host-based authentication without permitting login with
rlogin/rsh.
.Pp
+.It Pa ~/.k5login
+.It Pa ~/.k5users
+These files enforce GSSAPI/Kerberos authentication access control.
+Further details are described in
+.Xr ksu 1 .
+.Pp
.It Pa ~/.ssh/
This directory is the default location for all user-specific configuration
and authentication information.

485
SOURCES/openssh-6.6p1-keycat.patch Normal file
View File

@ -0,0 +1,485 @@
diff -up openssh/auth.c.keycat openssh/misc.c
--- openssh/auth.c.keycat 2015-06-24 10:57:50.158849606 +0200
+++ openssh/auth.c 2015-06-24 11:04:23.989868638 +0200
@@ -966,6 +966,14 @@ subprocess(const char *tag, struct passw
_exit(1);
}
+#ifdef WITH_SELINUX
+ if (sshd_selinux_setup_env_variables() < 0) {
+ error ("failed to copy environment: %s",
+ strerror(errno));
+ _exit(127);
+ }
+#endif
+
execve(av[0], av, child_env);
error("%s exec \"%s\": %s", tag, command, strerror(errno));
_exit(127);
diff -up openssh/HOWTO.ssh-keycat.keycat openssh/HOWTO.ssh-keycat
--- openssh/HOWTO.ssh-keycat.keycat 2015-06-24 10:57:50.157849608 +0200
+++ openssh/HOWTO.ssh-keycat 2015-06-24 10:57:50.157849608 +0200
@@ -0,0 +1,12 @@
+The ssh-keycat retrieves the content of the ~/.ssh/authorized_keys
+of an user in any environment. This includes environments with
+polyinstantiation of home directories and SELinux MLS policy enabled.
+
+To use ssh-keycat, set these options in /etc/ssh/sshd_config file:
+ AuthorizedKeysCommand /usr/libexec/openssh/ssh-keycat
+ AuthorizedKeysCommandUser root
+
+Do not forget to enable public key authentication:
+ PubkeyAuthentication yes
+
+
diff -up openssh/Makefile.in.keycat openssh/Makefile.in
--- openssh/Makefile.in.keycat 2015-06-24 10:57:50.152849621 +0200
+++ openssh/Makefile.in 2015-06-24 10:57:50.157849608 +0200
@@ -27,6 +27,7 @@ SFTP_SERVER=$(libexecdir)/sftp-server
SSH_KEYSIGN=$(libexecdir)/ssh-keysign
SSH_LDAP_HELPER=$(libexecdir)/ssh-ldap-helper
SSH_LDAP_WRAPPER=$(libexecdir)/ssh-ldap-wrapper
+SSH_KEYCAT=$(libexecdir)/ssh-keycat
SSH_PKCS11_HELPER=$(libexecdir)/ssh-pkcs11-helper
PRIVSEP_PATH=@PRIVSEP_PATH@
SSH_PRIVSEP_USER=@SSH_PRIVSEP_USER@
@@ -52,6 +52,7 @@ K5LIBS=@K5LIBS@
GSSLIBS=@GSSLIBS@
SSHLIBS=@SSHLIBS@
SSHDLIBS=@SSHDLIBS@
+KEYCATLIBS=@KEYCATLIBS@
LIBEDIT=@LIBEDIT@
AR=@AR@
AWK=@AWK@
@@ -65,7 +66,7 @@ EXEEXT=@EXEEXT@
MKDIR_P=@MKDIR_P@
INSTALL_SSH_LDAP_HELPER=@INSTALL_SSH_LDAP_HELPER@
-TARGETS=ssh$(EXEEXT) sshd$(EXEEXT) ssh-add$(EXEEXT) ssh-keygen$(EXEEXT) ssh-keyscan${EXEEXT} ssh-keysign${EXEEXT} ssh-pkcs11-helper$(EXEEXT) ssh-agent$(EXEEXT) scp$(EXEEXT) sftp-server$(EXEEXT) sftp$(EXEEXT) ssh-ldap-helper$(EXEEXT)
+TARGETS=ssh$(EXEEXT) sshd$(EXEEXT) ssh-add$(EXEEXT) ssh-keygen$(EXEEXT) ssh-keyscan${EXEEXT} ssh-keysign${EXEEXT} ssh-pkcs11-helper$(EXEEXT) ssh-agent$(EXEEXT) scp$(EXEEXT) sftp-server$(EXEEXT) sftp$(EXEEXT) ssh-ldap-helper$(EXEEXT) ssh-keycat$(EXEEXT)
XMSS_OBJS=\
ssh-xmss.o \
@@ -190,6 +191,9 @@ ssh-pkcs11-helper$(EXEEXT): $(LIBCOMPAT)
ssh-ldap-helper$(EXEEXT): $(LIBCOMPAT) libssh.a ldapconf.o ldapbody.o ldapmisc.o ldap-helper.o
$(LD) -o $@ ldapconf.o ldapbody.o ldapmisc.o ldap-helper.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh -lopenbsd-compat -lfipscheck $(LIBS) $(LDAPLIBS)
+ssh-keycat$(EXEEXT): $(LIBCOMPAT) $(SSHDOBJS) libssh.a ssh-keycat.o uidswap.o
+ $(LD) -o $@ ssh-keycat.o uidswap.o $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(KEYCATLIBS) $(LIBS)
+
ssh-keyscan$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-keyscan.o
$(LD) -o $@ ssh-keyscan.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh $(LIBS)
@@ -321,6 +325,7 @@ install-files:
$(INSTALL) -m 0700 $(STRIP_OPT) ssh-ldap-helper $(DESTDIR)$(SSH_LDAP_HELPER) ; \
$(INSTALL) -m 0700 ssh-ldap-wrapper $(DESTDIR)$(SSH_LDAP_WRAPPER) ; \
fi
+ $(INSTALL) -m 0755 $(STRIP_OPT) ssh-keycat$(EXEEXT) $(DESTDIR)$(libexecdir)/ssh-keycat$(EXEEXT)
$(INSTALL) -m 0755 $(STRIP_OPT) sftp$(EXEEXT) $(DESTDIR)$(bindir)/sftp$(EXEEXT)
$(INSTALL) -m 0755 $(STRIP_OPT) sftp-server$(EXEEXT) $(DESTDIR)$(SFTP_SERVER)$(EXEEXT)
$(INSTALL) -m 644 ssh.1.out $(DESTDIR)$(mandir)/$(mansubdir)1/ssh.1
diff -up openssh/openbsd-compat/port-linux.h.keycat openssh/openbsd-compat/port-linux.h
--- openssh/openbsd-compat/port-linux.h.keycat 2015-06-24 10:57:50.150849626 +0200
+++ openssh/openbsd-compat/port-linux.h 2015-06-24 10:57:50.160849601 +0200
@@ -25,8 +25,10 @@ void ssh_selinux_setup_pty(char *, const
void ssh_selinux_change_context(const char *);
void ssh_selinux_setfscreatecon(const char *);
+int sshd_selinux_enabled(void);
void sshd_selinux_copy_context(void);
void sshd_selinux_setup_exec_context(char *);
+int sshd_selinux_setup_env_variables(void);
#endif
#ifdef LINUX_OOM_ADJUST
diff -up openssh/openbsd-compat/port-linux-sshd.c.keycat openssh/openbsd-compat/port-linux-sshd.c
--- openssh/openbsd-compat/port-linux-sshd.c.keycat 2015-06-24 10:57:50.150849626 +0200
+++ openssh/openbsd-compat/port-linux-sshd.c 2015-06-24 10:57:50.159849603 +0200
@@ -54,6 +54,20 @@ extern Authctxt *the_authctxt;
extern int inetd_flag;
extern int rexeced_flag;
+/* Wrapper around is_selinux_enabled() to log its return value once only */
+int
+sshd_selinux_enabled(void)
+{
+ static int enabled = -1;
+
+ if (enabled == -1) {
+ enabled = (is_selinux_enabled() == 1);
+ debug("SELinux support %s", enabled ? "enabled" : "disabled");
+ }
+
+ return (enabled);
+}
+
/* Send audit message */
static int
sshd_selinux_send_audit_message(int success, security_context_t default_context,
@@ -308,7 +322,7 @@ sshd_selinux_getctxbyname(char *pwname,
/* Setup environment variables for pam_selinux */
static int
-sshd_selinux_setup_pam_variables(void)
+sshd_selinux_setup_variables(int(*set_it)(char *, const char *))
{
const char *reqlvl;
char *role;
@@ -319,16 +333,16 @@ sshd_selinux_setup_pam_variables(void)
ssh_selinux_get_role_level(&role, &reqlvl);
- rv = do_pam_putenv("SELINUX_ROLE_REQUESTED", role ? role : "");
+ rv = set_it("SELINUX_ROLE_REQUESTED", role ? role : "");
if (inetd_flag && !rexeced_flag) {
use_current = "1";
} else {
use_current = "";
- rv = rv || do_pam_putenv("SELINUX_LEVEL_REQUESTED", reqlvl ? reqlvl: "");
+ rv = rv || set_it("SELINUX_LEVEL_REQUESTED", reqlvl ? reqlvl: "");
}
- rv = rv || do_pam_putenv("SELINUX_USE_CURRENT_RANGE", use_current);
+ rv = rv || set_it("SELINUX_USE_CURRENT_RANGE", use_current);
if (role != NULL)
free(role);
@@ -336,6 +350,24 @@ sshd_selinux_setup_pam_variables(void)
return rv;
}
+static int
+sshd_selinux_setup_pam_variables(void)
+{
+ return sshd_selinux_setup_variables(do_pam_putenv);
+}
+
+static int
+do_setenv(char *name, const char *value)
+{
+ return setenv(name, value, 1);
+}
+
+int
+sshd_selinux_setup_env_variables(void)
+{
+ return sshd_selinux_setup_variables(do_setenv);
+}
+
/* Set the execution context to the default for the specified user */
void
sshd_selinux_setup_exec_context(char *pwname)
@@ -344,7 +376,7 @@ sshd_selinux_setup_exec_context(char *pw
int r = 0;
security_context_t default_ctx = NULL;
- if (!ssh_selinux_enabled())
+ if (!sshd_selinux_enabled())
return;
if (options.use_pam) {
@@ -415,7 +447,7 @@ sshd_selinux_copy_context(void)
{
security_context_t *ctx;
- if (!ssh_selinux_enabled())
+ if (!sshd_selinux_enabled())
return;
if (getexeccon((security_context_t *)&ctx) != 0) {
diff -up openssh/platform.c.keycat openssh/platform.c
--- openssh/platform.c.keycat 2015-06-24 10:57:50.147849633 +0200
+++ openssh/platform.c 2015-06-24 10:57:50.160849601 +0200
@@ -103,7 +103,7 @@ platform_setusercontext(struct passwd *p
{
#ifdef WITH_SELINUX
/* Cache selinux status for later use */
- (void)ssh_selinux_enabled();
+ (void)sshd_selinux_enabled();
#endif
#ifdef USE_SOLARIS_PROJECTS
diff -up openssh/ssh-keycat.c.keycat openssh/ssh-keycat.c
--- openssh/ssh-keycat.c.keycat 2015-06-24 10:57:50.161849599 +0200
+++ openssh/ssh-keycat.c 2015-06-24 10:57:50.161849599 +0200
@@ -0,0 +1,241 @@
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, and the entire permission notice in its entirety,
+ * including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions. (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (c) 2011 Red Hat, Inc.
+ * Written by Tomas Mraz <tmraz@redhat.com>
+*/
+
+#define _GNU_SOURCE
+
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <pwd.h>
+#include <fcntl.h>
+#include <unistd.h>
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#endif
+
+#include <security/pam_appl.h>
+
+#include "uidswap.h"
+#include "misc.h"
+
+#define ERR_USAGE 1
+#define ERR_PAM_START 2
+#define ERR_OPEN_SESSION 3
+#define ERR_CLOSE_SESSION 4
+#define ERR_PAM_END 5
+#define ERR_GETPWNAM 6
+#define ERR_MEMORY 7
+#define ERR_OPEN 8
+#define ERR_FILE_MODE 9
+#define ERR_FDOPEN 10
+#define ERR_STAT 11
+#define ERR_WRITE 12
+#define ERR_PAM_PUTENV 13
+#define BUFLEN 4096
+
+/* Just ignore the messages in the conversation function */
+static int
+dummy_conv(int num_msg, const struct pam_message **msgm,
+ struct pam_response **response, void *appdata_ptr)
+{
+ struct pam_response *rsp;
+
+ (void)msgm;
+ (void)appdata_ptr;
+
+ if (num_msg <= 0)
+ return PAM_CONV_ERR;
+
+ /* Just allocate the array as empty responses */
+ rsp = calloc (num_msg, sizeof (struct pam_response));
+ if (rsp == NULL)
+ return PAM_CONV_ERR;
+
+ *response = rsp;
+ return PAM_SUCCESS;
+}
+
+static struct pam_conv conv = {
+ dummy_conv,
+ NULL
+};
+
+char *
+make_auth_keys_name(const struct passwd *pwd)
+{
+ char *fname;
+
+ if (asprintf(&fname, "%s/.ssh/authorized_keys", pwd->pw_dir) < 0)
+ return NULL;
+
+ return fname;
+}
+
+int
+dump_keys(const char *user)
+{
+ struct passwd *pwd;
+ int fd = -1;
+ FILE *f = NULL;
+ char *fname = NULL;
+ int rv = 0;
+ char buf[BUFLEN];
+ size_t len;
+ struct stat st;
+
+ if ((pwd = getpwnam(user)) == NULL) {
+ return ERR_GETPWNAM;
+ }
+
+ if ((fname = make_auth_keys_name(pwd)) == NULL) {
+ return ERR_MEMORY;
+ }
+
+ temporarily_use_uid(pwd);
+
+ if ((fd = open(fname, O_RDONLY|O_NONBLOCK|O_NOFOLLOW, 0)) < 0) {
+ rv = ERR_OPEN;
+ goto fail;
+ }
+
+ if (fstat(fd, &st) < 0) {
+ rv = ERR_STAT;
+ goto fail;
+ }
+
+ if (!S_ISREG(st.st_mode) ||
+ (st.st_uid != pwd->pw_uid && st.st_uid != 0)) {
+ rv = ERR_FILE_MODE;
+ goto fail;
+ }
+
+ unset_nonblock(fd);
+
+ if ((f = fdopen(fd, "r")) == NULL) {
+ rv = ERR_FDOPEN;
+ goto fail;
+ }
+
+ fd = -1;
+
+ while ((len = fread(buf, 1, sizeof(buf), f)) > 0) {
+ rv = fwrite(buf, 1, len, stdout) != len ? ERR_WRITE : 0;
+ }
+
+fail:
+ if (fd != -1)
+ close(fd);
+ if (f != NULL)
+ fclose(f);
+ free(fname);
+ restore_uid();
+ return rv;
+}
+
+static const char *env_names[] = { "SELINUX_ROLE_REQUESTED",
+ "SELINUX_LEVEL_REQUESTED",
+ "SELINUX_USE_CURRENT_RANGE"
+};
+
+extern char **environ;
+
+int
+set_pam_environment(pam_handle_t *pamh)
+{
+ int i;
+ size_t j;
+
+ for (j = 0; j < sizeof(env_names)/sizeof(env_names[0]); ++j) {
+ int len = strlen(env_names[j]);
+
+ for (i = 0; environ[i] != NULL; ++i) {
+ if (strncmp(env_names[j], environ[i], len) == 0 &&
+ environ[i][len] == '=') {
+ if (pam_putenv(pamh, environ[i]) != PAM_SUCCESS)
+ return ERR_PAM_PUTENV;
+ }
+ }
+ }
+
+ return 0;
+}
+
+int
+main(int argc, char *argv[])
+{
+ pam_handle_t *pamh = NULL;
+ int retval;
+ int ev = 0;
+
+ if (argc != 2) {
+ fprintf(stderr, "Usage: %s <user-name>\n", argv[0]);
+ return ERR_USAGE;
+ }
+
+ retval = pam_start("ssh-keycat", argv[1], &conv, &pamh);
+ if (retval != PAM_SUCCESS) {
+ return ERR_PAM_START;
+ }
+
+ ev = set_pam_environment(pamh);
+ if (ev != 0)
+ goto finish;
+
+ retval = pam_open_session(pamh, PAM_SILENT);
+ if (retval != PAM_SUCCESS) {
+ ev = ERR_OPEN_SESSION;
+ goto finish;
+ }
+
+ ev = dump_keys(argv[1]);
+
+ retval = pam_close_session(pamh, PAM_SILENT);
+ if (retval != PAM_SUCCESS) {
+ ev = ERR_CLOSE_SESSION;
+ }
+
+finish:
+ retval = pam_end (pamh,retval);
+ if (retval != PAM_SUCCESS) {
+ ev = ERR_PAM_END;
+ }
+ return ev;
+}
diff --git a/configure.ac b/configure.ac
index 3bbccfd..6481f1f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2952,6 +2952,7 @@ AC_ARG_WITH([pam],
PAM_MSG="yes"
SSHDLIBS="$SSHDLIBS -lpam"
+ KEYCATLIBS="$KEYCATLIBS -lpam"
AC_DEFINE([USE_PAM], [1],
[Define if you want to enable PAM support])
@@ -3105,6 +3106,7 @@
;;
*)
SSHDLIBS="$SSHDLIBS -ldl"
+ KEYCATLIBS="$KEYCATLIBS -ldl"
;;
esac
fi
@@ -4042,6 +4044,7 @@ AC_ARG_WITH([selinux],
)
AC_SUBST([SSHLIBS])
AC_SUBST([SSHDLIBS])
+AC_SUBST([KEYCATLIBS])
# Check whether user wants Kerberos 5 support
KRB5_MSG="no"
@@ -5031,6 +5034,9 @@ fi
if test ! -z "${SSHLIBS}"; then
echo " +for ssh: ${SSHLIBS}"
fi
+if test ! -z "${KEYCATLIBS}"; then
+echo " +for ssh-keycat: ${KEYCATLIBS}"
+fi
echo ""

26
SOURCES/openssh-6.6p1-keyperm.patch Normal file
View File

@ -0,0 +1,26 @@
diff --git a/authfile.c b/authfile.c
index e93d867..4fc5b3d 100644
--- a/authfile.c
+++ b/authfile.c
@@ -32,6 +32,7 @@
#include <errno.h>
#include <fcntl.h>
+#include <grp.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
@@ -207,6 +208,13 @@ sshkey_perm_ok(int fd, const char *filename)
#ifdef HAVE_CYGWIN
if (check_ntsec(filename))
#endif
+ if (st.st_mode & 040) {
+ struct group *gr;
+
+ if ((gr = getgrnam("ssh_keys")) && (st.st_gid == gr->gr_gid))
+ st.st_mode &= ~040;
+ }
+
if ((st.st_uid == getuid()) && (st.st_mode & 077) != 0) {
error("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
error("@ WARNING: UNPROTECTED PRIVATE KEY FILE! @");

289
SOURCES/openssh-6.6p1-kuserok.patch Normal file
View File

@ -0,0 +1,289 @@
diff -up openssh-7.4p1/auth-krb5.c.kuserok openssh-7.4p1/auth-krb5.c
--- openssh-7.4p1/auth-krb5.c.kuserok 2016-12-23 14:36:07.640465939 +0100
+++ openssh-7.4p1/auth-krb5.c 2016-12-23 14:36:07.644465936 +0100
@@ -56,6 +56,21 @@
extern ServerOptions options;
+int
+ssh_krb5_kuserok(krb5_context krb5_ctx, krb5_principal krb5_user, const char *client,
+ int k5login_exists)
+{
+ if (options.use_kuserok || !k5login_exists)
+ return krb5_kuserok(krb5_ctx, krb5_user, client);
+ else {
+ char kuser[65];
+
+ if (krb5_aname_to_localname(krb5_ctx, krb5_user, sizeof(kuser), kuser))
+ return 0;
+ return strcmp(kuser, client) == 0;
+ }
+}
+
static int
krb5_init(void *context)
{
@@ -160,8 +175,9 @@ auth_krb5_password(Authctxt *authctxt, c
if (problem)
goto out;
- if (!krb5_kuserok(authctxt->krb5_ctx, authctxt->krb5_user,
- authctxt->pw->pw_name)) {
+ /* Use !options.use_kuserok here to make ssh_krb5_kuserok() not
+ * depend on the existance of .k5login */
+ if (!ssh_krb5_kuserok(authctxt->krb5_ctx, authctxt->krb5_user, authctxt->pw->pw_name, !options.use_kuserok)) {
problem = -1;
goto out;
}
diff -up openssh-7.4p1/gss-serv-krb5.c.kuserok openssh-7.4p1/gss-serv-krb5.c
--- openssh-7.4p1/gss-serv-krb5.c.kuserok 2016-12-23 14:36:07.640465939 +0100
+++ openssh-7.4p1/gss-serv-krb5.c 2016-12-23 14:36:07.644465936 +0100
@@ -67,6 +67,7 @@ static int ssh_gssapi_krb5_cmdok(krb5_pr
int);
static krb5_context krb_context = NULL;
+extern int ssh_krb5_kuserok(krb5_context, krb5_principal, const char *, int);
/* Initialise the krb5 library, for the stuff that GSSAPI won't do */
@@ -92,6 +93,103 @@ ssh_gssapi_krb5_init(void)
* Returns true if the user is OK to log in, otherwise returns 0
*/
+/* The purpose of the function is to find out if a Kerberos principal is
+ * allowed to log in as the given local user. This is a general problem with
+ * Kerberized services because by design the Kerberos principals are
+ * completely independent from the local user names. This is one of the
+ * reasons why Kerberos is working well on different operating systems like
+ * Windows and UNIX/Linux. Nevertheless a relationship between a Kerberos
+ * principal and a local user name must be established because otherwise every
+ * access would be granted for every principal with a valid ticket.
+ *
+ * Since it is a general issue libkrb5 provides some functions for
+ * applications to find out about the relationship between the Kerberos
+ * principal and a local user name. They are krb5_kuserok() and
+ * krb5_aname_to_localname().
+ *
+ * krb5_kuserok() can be used to "Determine if a principal is authorized to
+ * log in as a local user" (from the MIT Kerberos documentation of this
+ * function). Which is exactly what we are looking for and should be the
+ * preferred choice. It accepts the Kerberos principal and a local user name
+ * and let libkrb5 or its plugins determine if they relate to each other or
+ * not.
+ *
+ * krb5_aname_to_localname() can use used to "Convert a principal name to a
+ * local name" (from the MIT Kerberos documentation of this function). It
+ * accepts a Kerberos principle and returns a local name and it is up to the
+ * application to do any additional checks. There are two issues using
+ * krb5_aname_to_localname(). First, since POSIX user names are case
+ * sensitive, the calling application in general has no other choice than
+ * doing a case-sensitive string comparison between the name returned by
+ * krb5_aname_to_localname() and the name used at the login prompt. When the
+ * users are provided by a case in-sensitive server, e.g. Active Directory,
+ * this might lead to login failures because the user typing the name at the
+ * login prompt might not be aware of the right case. Another issue might be
+ * caused if there are multiple alias names available for a single user. E.g.
+ * the canonical name of a user is user@group.department.example.com but there
+ * exists a shorter login name, e.g. user@example.com, to safe typing at the
+ * login prompt. Here krb5_aname_to_localname() can only return the canonical
+ * name, but if the short alias is used at the login prompt authentication
+ * will fail as well. All this can be avoided by using krb5_kuserok() and
+ * configuring krb5.conf or using a suitable plugin to meet the needs of the
+ * given environment.
+ *
+ * The Fedora and RHEL version of openssh contain two patches which modify the
+ * access control behavior:
+ * - openssh-6.6p1-kuserok.patch
+ * - openssh-6.6p1-force_krb.patch
+ *
+ * openssh-6.6p1-kuserok.patch adds a new option KerberosUseKuserok for
+ * sshd_config which controls if krb5_kuserok() is used to check if the
+ * principle is authorized or if krb5_aname_to_localname() should be used.
+ * The reason to add this patch was that krb5_kuserok() by default checks if
+ * a .k5login file exits in the users home-directory. With this the user can
+ * give access to his account for any given principal which might be
+ * in violation with company policies and it would be useful if this can be
+ * rejected. Nevertheless the patch ignores the fact that krb5_kuserok() does
+ * no only check .k5login but other sources as well and checking .k5login can
+ * be disabled for all applications in krb5.conf as well. With this new
+ * option KerberosUseKuserok set to 'no' (and this is the default for RHEL7
+ * and Fedora 21) openssh can only use krb5_aname_to_localname() with the
+ * restrictions mentioned above.
+ *
+ * openssh-6.6p1-force_krb.patch adds a ksu like behaviour to ssh, i.e. when
+ * using GSSAPI authentication only commands configured in the .k5user can be
+ * executed. Here the wrong assumption that krb5_kuserok() only checks
+ * .k5login is made as well. In contrast ksu checks .k5login directly and
+ * does not use krb5_kuserok() which might be more useful for the given
+ * purpose. Additionally this patch is not synced with
+ * openssh-6.6p1-kuserok.patch.
+ *
+ * The current patch tries to restore the usage of krb5_kuserok() so that e.g.
+ * localauth plugins can be used. It does so by adding a forth parameter to
+ * ssh_krb5_kuserok() which indicates whether .k5login exists or not. If it
+ * does not exists krb5_kuserok() is called even if KerberosUseKuserok is set
+ * to 'no' because the intent of the option is to not check .k5login and if it
+ * does not exists krb5_kuserok() returns a result without checking .k5login.
+ * If .k5login does exists and KerberosUseKuserok is 'no' we fall back to
+ * krb5_aname_to_localname(). This is in my point of view an acceptable
+ * limitation and does not break the current behaviour.
+ *
+ * Additionally with this patch ssh_krb5_kuserok() is called in
+ * ssh_gssapi_krb5_cmdok() instead of only krb5_aname_to_localname() is
+ * neither .k5login nor .k5users exists to allow plugin evaluation via
+ * krb5_kuserok() as well.
+ *
+ * I tried to keep the patch as minimal as possible, nevertheless I see some
+ * areas for improvement which, if they make sense, have to be evaluated
+ * carefully because they might change existing behaviour and cause breaks
+ * during upgrade:
+ * - I wonder if disabling .k5login usage make sense in sshd or if it should
+ * be better disabled globally in krb5.conf
+ * - if really needed openssh-6.6p1-kuserok.patch should be fixed to really
+ * only disable checking .k5login and maybe .k5users
+ * - the ksu behaviour should be configurable and maybe check the .k5login and
+ * .k5users files directly like ksu itself does
+ * - to make krb5_aname_to_localname() more useful an option for sshd to use
+ * the canonical name (the one returned by getpwnam()) instead of the name
+ * given at the login prompt might be useful */
+
static int
ssh_gssapi_krb5_userok(ssh_gssapi_client *client, char *name)
{
@@ -116,7 +214,8 @@ ssh_gssapi_krb5_userok(ssh_gssapi_client
/* NOTE: .k5login and .k5users must opened as root, not the user,
* because if they are on a krb5-protected filesystem, user credentials
* to access these files aren't available yet. */
- if (krb5_kuserok(krb_context, princ, name) && k5login_exists) {
+ if (ssh_krb5_kuserok(krb_context, princ, name, k5login_exists)
+ && k5login_exists) {
retval = 1;
logit("Authorized to %s, krb5 principal %s (krb5_kuserok)",
name, (char *)client->displayname.value);
@@ -190,9 +289,8 @@ ssh_gssapi_krb5_cmdok(krb5_principal pri
snprintf(file, sizeof(file), "%s/.k5users", pw->pw_dir);
/* If both .k5login and .k5users DNE, self-login is ok. */
if (!k5login_exists && (access(file, F_OK) == -1)) {
- return (krb5_aname_to_localname(krb_context, principal,
- sizeof(kuser), kuser) == 0) &&
- (strcmp(kuser, luser) == 0);
+ return ssh_krb5_kuserok(krb_context, principal, luser,
+ k5login_exists);
}
if ((fp = fopen(file, "r")) == NULL) {
int saved_errno = errno;
diff -up openssh-7.4p1/servconf.c.kuserok openssh-7.4p1/servconf.c
--- openssh-7.4p1/servconf.c.kuserok 2016-12-23 14:36:07.630465944 +0100
+++ openssh-7.4p1/servconf.c 2016-12-23 15:11:52.278133344 +0100
@@ -116,6 +116,7 @@ initialize_server_options(ServerOptions
options->gss_cleanup_creds = -1;
options->gss_strict_acceptor = -1;
options->gss_store_rekey = -1;
+ options->use_kuserok = -1;
options->password_authentication = -1;
options->kbd_interactive_authentication = -1;
options->challenge_response_authentication = -1;
@@ -278,6 +279,8 @@ fill_default_server_options(ServerOption
options->gss_strict_acceptor = 1;
if (options->gss_store_rekey == -1)
options->gss_store_rekey = 0;
+ if (options->use_kuserok == -1)
+ options->use_kuserok = 1;
if (options->password_authentication == -1)
options->password_authentication = 1;
if (options->kbd_interactive_authentication == -1)
@@ -399,7 +402,7 @@ typedef enum {
sPermitRootLogin, sLogFacility, sLogLevel,
sRhostsRSAAuthentication, sRSAAuthentication,
sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
- sKerberosGetAFSToken, sKerberosUniqueCCache,
+ sKerberosGetAFSToken, sKerberosUniqueCCache, sKerberosUseKuserok,
sChallengeResponseAuthentication,
sPasswordAuthentication, sKbdInteractiveAuthentication,
sListenAddress, sAddressFamily,
@@ -478,12 +481,14 @@ static struct {
{ "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL },
#endif
{ "kerberosuniqueccache", sKerberosUniqueCCache, SSHCFG_GLOBAL },
+ { "kerberosusekuserok", sKerberosUseKuserok, SSHCFG_ALL },
#else
{ "kerberosauthentication", sUnsupported, SSHCFG_ALL },
{ "kerberosorlocalpasswd", sUnsupported, SSHCFG_GLOBAL },
{ "kerberosticketcleanup", sUnsupported, SSHCFG_GLOBAL },
{ "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL },
{ "kerberosuniqueccache", sUnsupported, SSHCFG_GLOBAL },
+ { "kerberosusekuserok", sUnsupported, SSHCFG_ALL },
#endif
{ "kerberostgtpassing", sUnsupported, SSHCFG_GLOBAL },
{ "afstokenpassing", sUnsupported, SSHCFG_GLOBAL },
@@ -1644,6 +1649,10 @@ process_server_config_line(ServerOptions
*activep = value;
break;
+ case sKerberosUseKuserok:
+ intptr = &options->use_kuserok;
+ goto parse_flag;
+
case sPermitListen:
case sPermitOpen:
if (opcode == sPermitListen) {
@@ -2016,6 +2025,7 @@ copy_set_server_options(ServerOptions *d
M_CP_INTOPT(client_alive_interval);
M_CP_INTOPT(ip_qos_interactive);
M_CP_INTOPT(ip_qos_bulk);
+ M_CP_INTOPT(use_kuserok);
M_CP_INTOPT(rekey_limit);
M_CP_INTOPT(rekey_interval);
M_CP_INTOPT(log_level);
@@ -2309,6 +2319,7 @@ dump_config(ServerOptions *o)
dump_cfg_fmtint(sKerberosGetAFSToken, o->kerberos_get_afs_token);
# endif
dump_cfg_fmtint(sKerberosUniqueCCache, o->kerberos_unique_ccache);
+ dump_cfg_fmtint(sKerberosUseKuserok, o->use_kuserok);
#endif
#ifdef GSSAPI
dump_cfg_fmtint(sGssAuthentication, o->gss_authentication);
diff -up openssh-7.4p1/servconf.h.kuserok openssh-7.4p1/servconf.h
--- openssh-7.4p1/servconf.h.kuserok 2016-12-23 14:36:07.630465944 +0100
+++ openssh-7.4p1/servconf.h 2016-12-23 14:36:07.645465936 +0100
@@ -118,6 +118,7 @@ typedef struct {
* authenticated with Kerberos. */
int kerberos_unique_ccache; /* If true, the acquired ticket will
* be stored in per-session ccache */
+ int use_kuserok;
int gss_authentication; /* If true, permit GSSAPI authentication */
int gss_keyex; /* If true, permit GSSAPI key exchange */
int gss_cleanup_creds; /* If true, destroy cred cache on logout */
diff -up openssh-7.4p1/sshd_config.5.kuserok openssh-7.4p1/sshd_config.5
--- openssh-7.4p1/sshd_config.5.kuserok 2016-12-23 14:36:07.637465940 +0100
+++ openssh-7.4p1/sshd_config.5 2016-12-23 15:14:03.117162222 +0100
@@ -850,6 +850,10 @@ Specifies whether to automatically destr
.Cm no
can lead to overwriting previous tickets by subseqent connections to the same
user account.
+.It Cm KerberosUseKuserok
+Specifies whether to look at .k5login file for user's aliases.
+The default is
+.Cm yes .
.It Cm KexAlgorithms
Specifies the available KEX (Key Exchange) algorithms.
Multiple algorithms must be comma-separated.
@@ -1078,6 +1082,7 @@ Available keywords are
.Cm IPQoS ,
.Cm KbdInteractiveAuthentication ,
.Cm KerberosAuthentication ,
+.Cm KerberosUseKuserok ,
.Cm LogLevel ,
.Cm MaxAuthTries ,
.Cm MaxSessions ,
diff -up openssh-7.4p1/sshd_config.kuserok openssh-7.4p1/sshd_config
--- openssh-7.4p1/sshd_config.kuserok 2016-12-23 14:36:07.631465943 +0100
+++ openssh-7.4p1/sshd_config 2016-12-23 14:36:07.646465935 +0100
@@ -73,6 +73,7 @@ ChallengeResponseAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes
#KerberosGetAFSToken no
+#KerberosUseKuserok yes
# GSSAPI options
GSSAPIAuthentication yes

121
SOURCES/openssh-6.6p1-privsep-selinux.patch Normal file
View File

@ -0,0 +1,121 @@
diff -up openssh-7.4p1/openbsd-compat/port-linux.h.privsep-selinux openssh-7.4p1/openbsd-compat/port-linux.h
--- openssh-7.4p1/openbsd-compat/port-linux.h.privsep-selinux 2016-12-23 18:58:52.972122201 +0100
+++ openssh-7.4p1/openbsd-compat/port-linux.h 2016-12-23 18:58:52.974122201 +0100
@@ -23,6 +23,7 @@ void ssh_selinux_setup_pty(char *, const
void ssh_selinux_change_context(const char *);
void ssh_selinux_setfscreatecon(const char *);
+void sshd_selinux_copy_context(void);
void sshd_selinux_setup_exec_context(char *);
#endif
diff -up openssh-7.4p1/openbsd-compat/port-linux-sshd.c.privsep-selinux openssh-7.4p1/openbsd-compat/port-linux-sshd.c
--- openssh-7.4p1/openbsd-compat/port-linux-sshd.c.privsep-selinux 2016-12-23 18:58:52.973122201 +0100
+++ openssh-7.4p1/openbsd-compat/port-linux-sshd.c 2016-12-23 18:58:52.974122201 +0100
@@ -419,6 +419,28 @@ sshd_selinux_setup_exec_context(char *pw
debug3("%s: done", __func__);
}
+void
+sshd_selinux_copy_context(void)
+{
+ security_context_t *ctx;
+
+ if (!ssh_selinux_enabled())
+ return;
+
+ if (getexeccon((security_context_t *)&ctx) != 0) {
+ logit("%s: getcon failed with %s", __func__, strerror (errno));
+ return;
+ }
+ if (ctx != NULL) {
+ /* unset exec context before we will lose this capabililty */
+ if (setexeccon(NULL) != 0)
+ fatal("%s: setexeccon failed with %s", __func__, strerror (errno));
+ if (setcon(ctx) != 0)
+ fatal("%s: setcon failed with %s", __func__, strerror (errno));
+ freecon(ctx);
+ }
+}
+
#endif
#endif
diff -up openssh-7.4p1/session.c.privsep-selinux openssh-7.4p1/session.c
--- openssh-7.4p1/session.c.privsep-selinux 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/session.c 2016-12-23 18:58:52.974122201 +0100
@@ -1331,7 +1331,7 @@ do_setusercontext(struct passwd *pw)
platform_setusercontext(pw);
- if (platform_privileged_uidswap()) {
+ if (platform_privileged_uidswap() && (!is_child || !use_privsep)) {
#ifdef HAVE_LOGIN_CAP
if (setusercontext(lc, pw, pw->pw_uid,
(LOGIN_SETALL & ~(LOGIN_SETPATH|LOGIN_SETUSER))) < 0) {
@@ -1361,6 +1361,9 @@ do_setusercontext(struct passwd *pw)
(unsigned long long)pw->pw_uid);
chroot_path = percent_expand(tmp, "h", pw->pw_dir,
"u", pw->pw_name, "U", uidstr, (char *)NULL);
+#ifdef WITH_SELINUX
+ sshd_selinux_copy_context();
+#endif
safely_chroot(chroot_path, pw->pw_uid);
free(tmp);
free(chroot_path);
@@ -1396,6 +1399,11 @@ do_setusercontext(struct passwd *pw)
/* Permanently switch to the desired uid. */
permanently_set_uid(pw);
#endif
+
+#ifdef WITH_SELINUX
+ if (in_chroot == 0)
+ sshd_selinux_copy_context();
+#endif
} else if (options.chroot_directory != NULL &&
strcasecmp(options.chroot_directory, "none") != 0) {
fatal("server lacks privileges to chroot to ChrootDirectory");
@@ -1413,9 +1421,6 @@ do_pwchange(Session *s)
if (s->ttyfd != -1) {
fprintf(stderr,
"You must change your password now and login again!\n");
-#ifdef WITH_SELINUX
- setexeccon(NULL);
-#endif
#ifdef PASSWD_NEEDS_USERNAME
execl(_PATH_PASSWD_PROG, "passwd", s->pw->pw_name,
(char *)NULL);
@@ -1625,9 +1630,6 @@ do_child(Session *s, const char *command
argv[i] = NULL;
optind = optreset = 1;
__progname = argv[0];
-#ifdef WITH_SELINUX
- ssh_selinux_change_context("sftpd_t");
-#endif
exit(sftp_server_main(i, argv, s->pw));
}
diff -up openssh-7.4p1/sshd.c.privsep-selinux openssh-7.4p1/sshd.c
--- openssh-7.4p1/sshd.c.privsep-selinux 2016-12-23 18:58:52.973122201 +0100
+++ openssh-7.4p1/sshd.c 2016-12-23 18:59:13.808124269 +0100
@@ -540,6 +540,10 @@ privsep_preauth_child(void)
/* Demote the private keys to public keys. */
demote_sensitive_data();
+#ifdef WITH_SELINUX
+ ssh_selinux_change_context("sshd_net_t");
+#endif
+
/* Demote the child */
if (privsep_chroot) {
/* Change our root directory */
@@ -633,6 +637,9 @@ privsep_postauth(Authctxt *authctxt)
{
#ifdef DISABLE_FD_PASSING
if (1) {
+#elif defined(WITH_SELINUX)
+ if (0) {
+ /* even root user can be confined by SELinux */
#else
if (authctxt->pw->pw_uid == 0) {
#endif

185
SOURCES/openssh-6.7p1-coverity.patch Normal file
View File

@ -0,0 +1,185 @@
diff -up openssh-7.4p1/channels.c.coverity openssh-7.4p1/channels.c
--- openssh-7.4p1/channels.c.coverity 2016-12-23 16:40:26.881788686 +0100
+++ openssh-7.4p1/channels.c 2016-12-23 16:42:36.244818763 +0100
@@ -288,11 +288,11 @@ channel_register_fds(Channel *c, int rfd
/* enable nonblocking mode */
if (nonblock) {
- if (rfd != -1)
+ if (rfd >= 0)
set_nonblock(rfd);
- if (wfd != -1)
+ if (wfd >= 0)
set_nonblock(wfd);
- if (efd != -1)
+ if (efd >= 0)
set_nonblock(efd);
}
}
diff -up openssh-7.4p1/monitor.c.coverity openssh-7.4p1/monitor.c
--- openssh-7.4p1/monitor.c.coverity 2016-12-23 16:40:26.888788688 +0100
+++ openssh-7.4p1/monitor.c 2016-12-23 16:40:26.900788691 +0100
@@ -411,7 +411,7 @@ monitor_child_preauth(Authctxt *_authctx
mm_get_keystate(pmonitor);
/* Drain any buffered messages from the child */
- while (pmonitor->m_log_recvfd != -1 && monitor_read_log(pmonitor) == 0)
+ while (pmonitor->m_log_recvfd >= 0 && monitor_read_log(pmonitor) == 0)
;
if (pmonitor->m_recvfd >= 0)
diff -up openssh-7.4p1/monitor_wrap.c.coverity openssh-7.4p1/monitor_wrap.c
--- openssh-7.4p1/monitor_wrap.c.coverity 2016-12-23 16:40:26.892788689 +0100
+++ openssh-7.4p1/monitor_wrap.c 2016-12-23 16:40:26.900788691 +0100
@@ -525,10 +525,10 @@ mm_pty_allocate(int *ptyfd, int *ttyfd,
if ((tmp1 = dup(pmonitor->m_recvfd)) == -1 ||
(tmp2 = dup(pmonitor->m_recvfd)) == -1) {
error("%s: cannot allocate fds for pty", __func__);
- if (tmp1 > 0)
+ if (tmp1 >= 0)
close(tmp1);
- if (tmp2 > 0)
- close(tmp2);
+ /*DEAD CODE if (tmp2 >= 0)
+ close(tmp2);*/
return 0;
}
close(tmp1);
diff -up openssh-7.4p1/openbsd-compat/bindresvport.c.coverity openssh-7.4p1/openbsd-compat/bindresvport.c
--- openssh-7.4p1/openbsd-compat/bindresvport.c.coverity 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/openbsd-compat/bindresvport.c 2016-12-23 16:40:26.901788691 +0100
@@ -58,7 +58,7 @@ bindresvport_sa(int sd, struct sockaddr
struct sockaddr_in6 *in6;
u_int16_t *portp;
u_int16_t port;
- socklen_t salen;
+ socklen_t salen = sizeof(struct sockaddr_storage);
int i;
if (sa == NULL) {
diff -up openssh-7.4p1/scp.c.coverity openssh-7.4p1/scp.c
--- openssh-7.4p1/scp.c.coverity 2016-12-23 16:40:26.856788681 +0100
+++ openssh-7.4p1/scp.c 2016-12-23 16:40:26.901788691 +0100
@@ -157,7 +157,7 @@ killchild(int signo)
{
if (do_cmd_pid > 1) {
kill(do_cmd_pid, signo ? signo : SIGTERM);
- waitpid(do_cmd_pid, NULL, 0);
+ (void) waitpid(do_cmd_pid, NULL, 0);
}
if (signo)
diff -up openssh-7.4p1/servconf.c.coverity openssh-7.4p1/servconf.c
--- openssh-7.4p1/servconf.c.coverity 2016-12-23 16:40:26.896788690 +0100
+++ openssh-7.4p1/servconf.c 2016-12-23 16:40:26.901788691 +0100
@@ -1547,7 +1547,7 @@ process_server_config_line(ServerOptions
fatal("%s line %d: Missing subsystem name.",
filename, linenum);
if (!*activep) {
- arg = strdelim(&cp);
+ /*arg =*/ (void) strdelim(&cp);
break;
}
for (i = 0; i < options->num_subsystems; i++)
@@ -1638,8 +1638,9 @@ process_server_config_line(ServerOptions
if (*activep && *charptr == NULL) {
*charptr = tilde_expand_filename(arg, getuid());
/* increase optional counter */
- if (intptr != NULL)
- *intptr = *intptr + 1;
+ /* DEAD CODE intptr is still NULL ;)
+ if (intptr != NULL)
+ *intptr = *intptr + 1; */
}
break;
diff -up openssh-7.4p1/serverloop.c.coverity openssh-7.4p1/serverloop.c
--- openssh-7.4p1/serverloop.c.coverity 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/serverloop.c 2016-12-23 16:40:26.902788691 +0100
@@ -125,13 +125,13 @@ notify_setup(void)
static void
notify_parent(void)
{
- if (notify_pipe[1] != -1)
+ if (notify_pipe[1] >= 0)
(void)write(notify_pipe[1], "", 1);
}
static void
notify_prepare(fd_set *readset)
{
- if (notify_pipe[0] != -1)
+ if (notify_pipe[0] >= 0)
FD_SET(notify_pipe[0], readset);
}
static void
@@ -139,8 +139,8 @@ notify_done(fd_set *readset)
{
char c;
- if (notify_pipe[0] != -1 && FD_ISSET(notify_pipe[0], readset))
- while (read(notify_pipe[0], &c, 1) != -1)
+ if (notify_pipe[0] >= 0 && FD_ISSET(notify_pipe[0], readset))
+ while (read(notify_pipe[0], &c, 1) >= 0)
debug2("%s: reading", __func__);
}
@@ -518,7 +518,7 @@ server_request_tun(void)
}
tun = packet_get_int();
- if (auth_opts->force_tun_device != -1) {
+ if (auth_opts->force_tun_device >= 0) {
if (tun != SSH_TUNID_ANY && auth_opts->force_tun_device != tun)
goto done;
tun = auth_opts->force_tun_device;
diff -up openssh-7.4p1/sftp.c.coverity openssh-7.4p1/sftp.c
--- openssh-7.4p1/sftp.c.coverity 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/sftp.c 2016-12-23 16:40:26.903788691 +0100
@@ -224,7 +224,7 @@ killchild(int signo)
{
if (sshpid > 1) {
kill(sshpid, SIGTERM);
- waitpid(sshpid, NULL, 0);
+ (void) waitpid(sshpid, NULL, 0);
}
_exit(1);
diff -up openssh-7.4p1/ssh-agent.c.coverity openssh-7.4p1/ssh-agent.c
--- openssh-7.4p1/ssh-agent.c.coverity 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/ssh-agent.c 2016-12-23 16:40:26.903788691 +0100
@@ -1220,8 +1220,8 @@ main(int ac, char **av)
sanitise_stdfd();
/* drop */
- setegid(getgid());
- setgid(getgid());
+ (void) setegid(getgid());
+ (void) setgid(getgid());
platform_disable_tracing(0); /* strict=no */
diff -up openssh-7.4p1/sshd.c.coverity openssh-7.4p1/sshd.c
--- openssh-7.4p1/sshd.c.coverity 2016-12-23 16:40:26.897788690 +0100
+++ openssh-7.4p1/sshd.c 2016-12-23 16:40:26.904788692 +0100
@@ -691,8 +691,10 @@ privsep_preauth(Authctxt *authctxt)
privsep_preauth_child();
setproctitle("%s", "[net]");
- if (box != NULL)
+ if (box != NULL) {
ssh_sandbox_child(box);
+ free(box);
+ }
return 0;
}
@@ -1386,6 +1388,9 @@ server_accept_loop(int *sock_in, int *so
if (num_listen_socks < 0)
break;
}
+
+ if (fdset != NULL)
+ free(fdset);
}
/*

608
SOURCES/openssh-6.7p1-kdf-cavs.patch Normal file
View File

@ -0,0 +1,608 @@
diff -up openssh-6.8p1/Makefile.in.kdf-cavs openssh-6.8p1/Makefile.in
--- openssh-6.8p1/Makefile.in.kdf-cavs 2015-03-18 11:23:46.346049359 +0100
+++ openssh-6.8p1/Makefile.in 2015-03-18 11:24:20.395968445 +0100
@@ -29,6 +29,7 @@ SSH_LDAP_HELPER=$(libexecdir)/ssh-ldap-h
SSH_LDAP_WRAPPER=$(libexecdir)/ssh-ldap-wrapper
SSH_KEYCAT=$(libexecdir)/ssh-keycat
CTR_CAVSTEST=$(libexecdir)/ctr-cavstest
+SSH_CAVS=$(libexecdir)/ssh-cavs
SSH_PKCS11_HELPER=$(libexecdir)/ssh-pkcs11-helper
PRIVSEP_PATH=@PRIVSEP_PATH@
SSH_PRIVSEP_USER=@SSH_PRIVSEP_USER@
@@ -67,7 +68,7 @@ EXEEXT=@EXEEXT@
MKDIR_P=@MKDIR_P@
INSTALL_SSH_LDAP_HELPER=@INSTALL_SSH_LDAP_HELPER@
-TARGETS=ssh$(EXEEXT) sshd$(EXEEXT) ssh-add$(EXEEXT) ssh-keygen$(EXEEXT) ssh-keyscan${EXEEXT} ssh-keysign${EXEEXT} ssh-pkcs11-helper$(EXEEXT) ssh-agent$(EXEEXT) scp$(EXEEXT) sftp-server$(EXEEXT) sftp$(EXEEXT) ssh-ldap-helper$(EXEEXT) ssh-keycat$(EXEEXT) ctr-cavstest$(EXEEXT)
+TARGETS=ssh$(EXEEXT) sshd$(EXEEXT) ssh-add$(EXEEXT) ssh-keygen$(EXEEXT) ssh-keyscan${EXEEXT} ssh-keysign${EXEEXT} ssh-pkcs11-helper$(EXEEXT) ssh-agent$(EXEEXT) scp$(EXEEXT) sftp-server$(EXEEXT) sftp$(EXEEXT) ssh-ldap-helper$(EXEEXT) ssh-keycat$(EXEEXT) ctr-cavstest$(EXEEXT) ssh-cavs$(EXEEXT)
XMSS_OBJS=\
ssh-xmss.o \
@@ -198,6 +199,9 @@ ssh-keycat$(EXEEXT): $(LIBCOMPAT) $(SSHD
ctr-cavstest$(EXEEXT): $(LIBCOMPAT) libssh.a ctr-cavstest.o
$(LD) -o $@ ctr-cavstest.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh -lfipscheck $(LIBS)
+ssh-cavs$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-cavs.o
+ $(LD) -o $@ ssh-cavs.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)
+
ssh-keyscan$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-keyscan.o
$(LD) -o $@ ssh-keyscan.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh $(LIBS)
@@ -331,6 +335,8 @@ install-files:
fi
$(INSTALL) -m 0755 $(STRIP_OPT) ssh-keycat$(EXEEXT) $(DESTDIR)$(libexecdir)/ssh-keycat$(EXEEXT)
$(INSTALL) -m 0755 $(STRIP_OPT) ctr-cavstest$(EXEEXT) $(DESTDIR)$(libexecdir)/ctr-cavstest$(EXEEXT)
+ $(INSTALL) -m 0755 $(STRIP_OPT) ssh-cavs$(EXEEXT) $(DESTDIR)$(libexecdir)/ssh-cavs$(EXEEXT)
+ $(INSTALL) -m 0755 $(STRIP_OPT) ssh-cavs_driver.pl $(DESTDIR)$(libexecdir)/ssh-cavs_driver.pl
$(INSTALL) -m 0755 $(STRIP_OPT) sftp$(EXEEXT) $(DESTDIR)$(bindir)/sftp$(EXEEXT)
$(INSTALL) -m 0755 $(STRIP_OPT) sftp-server$(EXEEXT) $(DESTDIR)$(SFTP_SERVER)$(EXEEXT)
$(INSTALL) -m 644 ssh.1.out $(DESTDIR)$(mandir)/$(mansubdir)1/ssh.1
diff -up openssh-6.8p1/ssh-cavs.c.kdf-cavs openssh-6.8p1/ssh-cavs.c
--- openssh-6.8p1/ssh-cavs.c.kdf-cavs 2015-03-18 11:23:46.348049354 +0100
+++ openssh-6.8p1/ssh-cavs.c 2015-03-18 11:23:46.348049354 +0100
@@ -0,0 +1,377 @@
+/*
+ * Copyright (C) 2015, Stephan Mueller <smueller@chronox.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, and the entire permission notice in its entirety,
+ * including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU General Public License, in which case the provisions of the GPL2
+ * are required INSTEAD OF the above restrictions. (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
+ * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ */
+
+#include "includes.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <string.h>
+
+#include <openssl/bn.h>
+
+#include "xmalloc.h"
+#include "sshbuf.h"
+#include "sshkey.h"
+#include "cipher.h"
+#include "kex.h"
+#include "packet.h"
+#include "digest.h"
+
+static int bin_char(unsigned char hex)
+{
+ if (48 <= hex && 57 >= hex)
+ return (hex - 48);
+ if (65 <= hex && 70 >= hex)
+ return (hex - 55);
+ if (97 <= hex && 102 >= hex)
+ return (hex - 87);
+ return 0;
+}
+
+/*
+ * Convert hex representation into binary string
+ * @hex input buffer with hex representation
+ * @hexlen length of hex
+ * @bin output buffer with binary data
+ * @binlen length of already allocated bin buffer (should be at least
+ * half of hexlen -- if not, only a fraction of hexlen is converted)
+ */
+static void hex2bin(const char *hex, size_t hexlen,
+ unsigned char *bin, size_t binlen)
+{
+ size_t i = 0;
+ size_t chars = (binlen > (hexlen / 2)) ? (hexlen / 2) : binlen;
+
+ for (i = 0; i < chars; i++) {
+ bin[i] = bin_char(hex[(i*2)]) << 4;
+ bin[i] |= bin_char(hex[((i*2)+1)]);
+ }
+}
+
+/*
+ * Allocate sufficient space for binary representation of hex
+ * and convert hex into bin
+ *
+ * Caller must free bin
+ * @hex input buffer with hex representation
+ * @hexlen length of hex
+ * @bin return value holding the pointer to the newly allocated buffer
+ * @binlen return value holding the allocated size of bin
+ *
+ * return: 0 on success, !0 otherwise
+ */
+static int hex2bin_alloc(const char *hex, size_t hexlen,
+ unsigned char **bin, size_t *binlen)
+{
+ unsigned char *out = NULL;
+ size_t outlen = 0;
+
+ if (!hexlen)
+ return -EINVAL;
+
+ outlen = (hexlen + 1) / 2;
+
+ out = calloc(1, outlen);
+ if (!out)
+ return -errno;
+
+ hex2bin(hex, hexlen, out, outlen);
+ *bin = out;
+ *binlen = outlen;
+ return 0;
+}
+
+static char hex_char_map_l[] = { '0', '1', '2', '3', '4', '5', '6', '7',
+ '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
+static char hex_char_map_u[] = { '0', '1', '2', '3', '4', '5', '6', '7',
+ '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
+static char hex_char(unsigned int bin, int u)
+{
+ if (bin < sizeof(hex_char_map_l))
+ return (u) ? hex_char_map_u[bin] : hex_char_map_l[bin];
+ return 'X';
+}
+
+/*
+ * Convert binary string into hex representation
+ * @bin input buffer with binary data
+ * @binlen length of bin
+ * @hex output buffer to store hex data
+ * @hexlen length of already allocated hex buffer (should be at least
+ * twice binlen -- if not, only a fraction of binlen is converted)
+ * @u case of hex characters (0=>lower case, 1=>upper case)
+ */
+static void bin2hex(const unsigned char *bin, size_t binlen,
+ char *hex, size_t hexlen, int u)
+{
+ size_t i = 0;
+ size_t chars = (binlen > (hexlen / 2)) ? (hexlen / 2) : binlen;
+
+ for (i = 0; i < chars; i++) {
+ hex[(i*2)] = hex_char((bin[i] >> 4), u);
+ hex[((i*2)+1)] = hex_char((bin[i] & 0x0f), u);
+ }
+}
+
+struct kdf_cavs {
+ unsigned char *K;
+ size_t Klen;
+ unsigned char *H;
+ size_t Hlen;
+ unsigned char *session_id;
+ size_t session_id_len;
+
+ unsigned int iv_len;
+ unsigned int ek_len;
+ unsigned int ik_len;
+};
+
+static int sshkdf_cavs(struct kdf_cavs *test)
+{
+ int ret = 0;
+ struct kex kex;
+ BIGNUM *Kbn = NULL;
+ int mode = 0;
+ struct newkeys *ctoskeys;
+ struct newkeys *stockeys;
+ struct ssh *ssh = NULL;
+
+#define HEXOUTLEN 500
+ char hex[HEXOUTLEN];
+
+ memset(&kex, 0, sizeof(struct kex));
+
+ Kbn = BN_new();
+ BN_bin2bn(test->K, test->Klen, Kbn);
+ if (!Kbn) {
+ printf("cannot convert K into BIGNUM\n");
+ ret = 1;
+ goto out;
+ }
+
+ kex.session_id = test->session_id;
+ kex.session_id_len = test->session_id_len;
+
+ /* setup kex */
+
+ /* select the right hash based on struct ssh_digest digests */
+ switch (test->ik_len) {
+ case 20:
+ kex.hash_alg = SSH_DIGEST_SHA1;
+ break;
+ case 32:
+ kex.hash_alg = SSH_DIGEST_SHA256;
+ break;
+ case 48:
+ kex.hash_alg = SSH_DIGEST_SHA384;
+ break;
+ case 64:
+ kex.hash_alg = SSH_DIGEST_SHA512;
+ break;
+ default:
+ printf("Wrong hash type %u\n", test->ik_len);
+ ret = 1;
+ goto out;
+ }
+
+ /* implement choose_enc */
+ for (mode = 0; mode < 2; mode++) {
+ kex.newkeys[mode] = calloc(1, sizeof(struct newkeys));
+ if (!kex.newkeys[mode]) {
+ printf("allocation of newkeys failed\n");
+ ret = 1;
+ goto out;
+ }
+ kex.newkeys[mode]->enc.iv_len = test->iv_len;
+ kex.newkeys[mode]->enc.key_len = test->ek_len;
+ kex.newkeys[mode]->enc.block_size = (test->iv_len == 64) ? 8 : 16;
+ kex.newkeys[mode]->mac.key_len = test->ik_len;
+ }
+
+ /* implement kex_choose_conf */
+ kex.we_need = kex.newkeys[0]->enc.key_len;
+ if (kex.we_need < kex.newkeys[0]->enc.block_size)
+ kex.we_need = kex.newkeys[0]->enc.block_size;
+ if (kex.we_need < kex.newkeys[0]->enc.iv_len)
+ kex.we_need = kex.newkeys[0]->enc.iv_len;
+ if (kex.we_need < kex.newkeys[0]->mac.key_len)
+ kex.we_need = kex.newkeys[0]->mac.key_len;
+
+ /* MODE_OUT (1) -> server to client
+ * MODE_IN (0) -> client to server */
+ kex.server = 1;
+
+ /* do it */
+ if ((ssh = ssh_packet_set_connection(NULL, -1, -1)) == NULL){
+ printf("Allocation error\n");
+ goto out;
+ }
+ ssh->kex = &kex;
+ kex_derive_keys_bn(ssh, test->H, test->Hlen, Kbn);
+
+ ctoskeys = kex.newkeys[0];
+ stockeys = kex.newkeys[1];
+
+ /* get data */
+ memset(hex, 0, HEXOUTLEN);
+ bin2hex(ctoskeys->enc.iv, (size_t)ctoskeys->enc.iv_len,
+ hex, HEXOUTLEN, 0);
+ printf("Initial IV (client to server) = %s\n", hex);
+ memset(hex, 0, HEXOUTLEN);
+ bin2hex(stockeys->enc.iv, (size_t)stockeys->enc.iv_len,
+ hex, HEXOUTLEN, 0);
+ printf("Initial IV (server to client) = %s\n", hex);
+
+ memset(hex, 0, HEXOUTLEN);
+ bin2hex(ctoskeys->enc.key, (size_t)ctoskeys->enc.key_len,
+ hex, HEXOUTLEN, 0);
+ printf("Encryption key (client to server) = %s\n", hex);
+ memset(hex, 0, HEXOUTLEN);
+ bin2hex(stockeys->enc.key, (size_t)stockeys->enc.key_len,
+ hex, HEXOUTLEN, 0);
+ printf("Encryption key (server to client) = %s\n", hex);
+
+ memset(hex, 0, HEXOUTLEN);
+ bin2hex(ctoskeys->mac.key, (size_t)ctoskeys->mac.key_len,
+ hex, HEXOUTLEN, 0);
+ printf("Integrity key (client to server) = %s\n", hex);
+ memset(hex, 0, HEXOUTLEN);
+ bin2hex(stockeys->mac.key, (size_t)stockeys->mac.key_len,
+ hex, HEXOUTLEN, 0);
+ printf("Integrity key (server to client) = %s\n", hex);
+
+out:
+ if (Kbn)
+ BN_free(Kbn);
+ if (ssh)
+ ssh_packet_close(ssh);
+ return ret;
+}
+
+static void usage(void)
+{
+ fprintf(stderr, "\nOpenSSH KDF CAVS Test\n\n");
+ fprintf(stderr, "Usage:\n");
+ fprintf(stderr, "\t-K\tShared secret string\n");
+ fprintf(stderr, "\t-H\tHash string\n");
+ fprintf(stderr, "\t-s\tSession ID string\n");
+ fprintf(stderr, "\t-i\tIV length to be generated\n");
+ fprintf(stderr, "\t-e\tEncryption key length to be generated\n");
+ fprintf(stderr, "\t-m\tMAC key length to be generated\n");
+}
+
+/*
+ * Test command example:
+ * ./ssh-cavs -K 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 -H d3ab91a850febb417a25d892ec48ed5952c7a5de -s d3ab91a850febb417a25d892ec48ed5952c7a5de -i 8 -e 24 -m 20
+ *
+ * Initial IV (client to server) = 4bb320d1679dfd3a
+ * Initial IV (server to client) = 43dea6fdf263a308
+ * Encryption key (client to server) = 13048cc600b9d3cf9095aa6cf8e2ff9cf1c54ca0520c89ed
+ * Encryption key (server to client) = 1e483c5134e901aa11fc4e0a524e7ec7b75556148a222bb0
+ * Integrity key (client to server) = ecef63a092b0dcc585bdc757e01b2740af57d640
+ * Integrity key (server to client) = 7424b05f3c44a72b4ebd281fb71f9cbe7b64d479
+ */
+int main(int argc, char *argv[])
+{
+ struct kdf_cavs test;
+ int ret = 1;
+ int opt = 0;
+
+ memset(&test, 0, sizeof(struct kdf_cavs));
+ while((opt = getopt(argc, argv, "K:H:s:i:e:m:")) != -1)
+ {
+ size_t len = 0;
+ switch(opt)
+ {
+ /*
+ * CAVS K is MPINT
+ * we want a hex (i.e. the caller must ensure the
+ * following transformations already happened):
+ * 1. cut off first four bytes
+ * 2. if most significant bit of value is
+ * 1, prepend 0 byte
+ */
+ case 'K':
+ len = strlen(optarg);
+ ret = hex2bin_alloc(optarg, len,
+ &test.K, &test.Klen);
+ if (ret)
+ goto out;
+ break;
+ case 'H':
+ len = strlen(optarg);
+ ret = hex2bin_alloc(optarg, len,
+ &test.H, &test.Hlen);
+ if (ret)
+ goto out;
+ break;
+ case 's':
+ len = strlen(optarg);
+ ret = hex2bin_alloc(optarg, len,
+ &test.session_id,
+ &test.session_id_len);
+ if (ret)
+ goto out;
+ break;
+ case 'i':
+ test.iv_len = strtoul(optarg, NULL, 10);
+ break;
+ case 'e':
+ test.ek_len = strtoul(optarg, NULL, 10);
+ break;
+ case 'm':
+ test.ik_len = strtoul(optarg, NULL, 10);
+ break;
+ default:
+ usage();
+ goto out;
+ }
+ }
+
+ ret = sshkdf_cavs(&test);
+
+out:
+ if (test.session_id)
+ free(test.session_id);
+ if (test.K)
+ free(test.K);
+ if (test.H)
+ free(test.H);
+ return ret;
+
+}
diff -up openssh-6.8p1/ssh-cavs_driver.pl.kdf-cavs openssh-6.8p1/ssh-cavs_driver.pl
--- openssh-6.8p1/ssh-cavs_driver.pl.kdf-cavs 2015-03-18 11:23:46.348049354 +0100
+++ openssh-6.8p1/ssh-cavs_driver.pl 2015-03-18 11:23:46.348049354 +0100
@@ -0,0 +1,184 @@
+#!/usr/bin/env perl
+#
+# CAVS test driver for OpenSSH
+#
+# Copyright (C) 2015, Stephan Mueller <smueller@chronox.de>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# NO WARRANTY
+#
+# BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+# FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+# OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+# PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+# OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+# TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+# PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+# REPAIR OR CORRECTION.
+#
+# IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+# WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+# REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+# INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+# OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+# TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+# YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+# PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGES.
+#
+use strict;
+use warnings;
+use IPC::Open2;
+
+# Executing a program by feeding STDIN and retrieving
+# STDOUT
+# $1: data string to be piped to the app on STDIN
+# rest: program and args
+# returns: STDOUT of program as string
+sub pipe_through_program($@) {
+ my $in = shift;
+ my @args = @_;
+
+ my ($CO, $CI);
+ my $pid = open2($CO, $CI, @args);
+
+ my $out = "";
+ my $len = length($in);
+ my $first = 1;
+ while (1) {
+ my $rin = "";
+ my $win = "";
+ # Output of prog is FD that we read
+ vec($rin,fileno($CO),1) = 1;
+ # Input of prog is FD that we write
+ # check for $first is needed because we can have NULL input
+ # that is to be written to the app
+ if ( $len > 0 || $first) {
+ (vec($win,fileno($CI),1) = 1);
+ $first=0;
+ }
+ # Let us wait for 100ms
+ my $nfound = select(my $rout=$rin, my $wout=$win, undef, 0.1);
+ if ( $wout ) {
+ my $written = syswrite($CI, $in, $len);
+ die "broken pipe" if !defined $written;
+ $len -= $written;
+ substr($in, 0, $written) = "";
+ if ($len <= 0) {
+ close $CI or die "broken pipe: $!";
+ }
+ }
+ if ( $rout ) {
+ my $tmp_out = "";
+ my $bytes_read = sysread($CO, $tmp_out, 4096);
+ $out .= $tmp_out;
+ last if ($bytes_read == 0);
+ }
+ }
+ close $CO or die "broken pipe: $!";
+ waitpid $pid, 0;
+
+ return $out;
+}
+
+# Parser of CAVS test vector file
+# $1: Test vector file
+# $2: Output file for test results
+# return: nothing
+sub parse($$) {
+ my $infile = shift;
+ my $outfile = shift;
+
+ my $out = "";
+
+ my $K = "";
+ my $H = "";
+ my $session_id = "";
+ my $ivlen = 0;
+ my $eklen = "";
+ my $iklen = "";
+
+ open(IN, "<$infile");
+ while(<IN>) {
+
+ my $line = $_;
+ chomp($line);
+ $line =~ s/\r//;
+
+ if ($line =~ /\[SHA-1\]/) {
+ $iklen = 20;
+ } elsif ($line =~ /\[SHA-256\]/) {
+ $iklen = 32;
+ } elsif ($line =~ /\[SHA-384\]/) {
+ $iklen = 48;
+ } elsif ($line =~ /\[SHA-512\]/) {
+ $iklen = 64;
+ } elsif ($line =~ /^\[IV length\s*=\s*(.*)\]/) {
+ $ivlen = $1;
+ $ivlen = $ivlen / 8;
+ } elsif ($line =~ /^\[encryption key length\s*=\s*(.*)\]/) {
+ $eklen = $1;
+ $eklen = $eklen / 8;
+ } elsif ($line =~ /^K\s*=\s*(.*)/) {
+ $K = $1;
+ $K = substr($K, 8);
+ $K = "00" . $K;
+ } elsif ($line =~ /^H\s*=\s*(.*)/) {
+ $H = $1;
+ } elsif ($line =~ /^session_id\s*=\s*(.*)/) {
+ $session_id = $1;
+ }
+ $out .= $line . "\n";
+
+ if ($K ne "" && $H ne "" && $session_id ne "" &&
+ $ivlen ne "" && $eklen ne "" && $iklen > 0) {
+ $out .= pipe_through_program("", "./ssh-cavs -H $H -K $K -s $session_id -i $ivlen -e $eklen -m $iklen");
+
+ $K = "";
+ $H = "";
+ $session_id = "";
+ }
+ }
+ close IN;
+ $out =~ s/\n/\r\n/g; # make it a dos file
+ open(OUT, ">$outfile") or die "Cannot create output file $outfile: $?";
+ print OUT $out;
+ close OUT;
+}
+
+############################################################
+#
+# let us pretend to be C :-)
+sub main() {
+
+ my $infile=$ARGV[0];
+ die "Error: Test vector file $infile not found" if (! -f $infile);
+
+ my $outfile = $infile;
+ # let us add .rsp regardless whether we could strip .req
+ $outfile =~ s/\.req$//;
+ $outfile .= ".rsp";
+ if (-f $outfile) {
+ die "Output file $outfile could not be removed: $?"
+ unless unlink($outfile);
+ }
+ print STDERR "Performing tests from source file $infile with results stored in destination file $outfile\n";
+
+ # Do the job
+ parse($infile, $outfile);
+}
+
+###########################################
+# Call it
+main();
+1;

2742
SOURCES/openssh-6.7p1-ldap.patch Normal file
View File

File diff suppressed because it is too large Load Diff

98
SOURCES/openssh-6.7p1-sftp-force-permission.patch Normal file
View File

@ -0,0 +1,98 @@
diff -up openssh-7.2p2/sftp-server.8.sftp-force-mode openssh-7.2p2/sftp-server.8
--- openssh-7.2p2/sftp-server.8.sftp-force-mode 2016-03-09 19:04:48.000000000 +0100
+++ openssh-7.2p2/sftp-server.8 2016-06-23 16:18:20.463854117 +0200
@@ -38,6 +38,7 @@
.Op Fl P Ar blacklisted_requests
.Op Fl p Ar whitelisted_requests
.Op Fl u Ar umask
+.Op Fl m Ar force_file_perms
.Ek
.Nm
.Fl Q Ar protocol_feature
@@ -138,6 +139,10 @@ Sets an explicit
.Xr umask 2
to be applied to newly-created files and directories, instead of the
user's default mask.
+.It Fl m Ar force_file_perms
+Sets explicit file permissions to be applied to newly-created files instead
+of the default or client requested mode. Numeric values include:
+777, 755, 750, 666, 644, 640, etc. Option -u is ineffective if -m is set.
.El
.Pp
On some systems,
diff -up openssh-7.2p2/sftp-server.c.sftp-force-mode openssh-7.2p2/sftp-server.c
--- openssh-7.2p2/sftp-server.c.sftp-force-mode 2016-06-23 16:18:20.446854128 +0200
+++ openssh-7.2p2/sftp-server.c 2016-06-23 16:20:37.950766082 +0200
@@ -69,6 +69,10 @@ struct sshbuf *oqueue;
/* Version of client */
static u_int version;
+/* Force file permissions */
+int permforce = 0;
+long permforcemode;
+
/* SSH2_FXP_INIT received */
static int init_done;
@@ -683,6 +687,7 @@ process_open(u_int32_t id)
Attrib a;
char *name;
int r, handle, fd, flags, mode, status = SSH2_FX_FAILURE;
+ mode_t old_umask = 0;
if ((r = sshbuf_get_cstring(iqueue, &name, NULL)) != 0 ||
(r = sshbuf_get_u32(iqueue, &pflags)) != 0 || /* portable flags */
@@ -692,6 +697,10 @@ process_open(u_int32_t id)
debug3("request %u: open flags %d", id, pflags);
flags = flags_from_portable(pflags);
mode = (a.flags & SSH2_FILEXFER_ATTR_PERMISSIONS) ? a.perm : 0666;
+ if (permforce == 1) { /* Force perm if -m is set */
+ mode = permforcemode;
+ old_umask = umask(0); /* so umask does not interfere */
+ }
logit("open \"%s\" flags %s mode 0%o",
name, string_from_portable(pflags), mode);
if (readonly &&
@@ -713,6 +722,8 @@ process_open(u_int32_t id)
}
}
}
+ if (permforce == 1)
+ (void) umask(old_umask); /* restore umask to something sane */
if (status != SSH2_FX_OK)
send_status(id, status);
free(name);
@@ -1494,7 +1505,7 @@ sftp_server_usage(void)
fprintf(stderr,
"usage: %s [-ehR] [-d start_directory] [-f log_facility] "
"[-l log_level]\n\t[-P blacklisted_requests] "
- "[-p whitelisted_requests] [-u umask]\n"
+ "[-p whitelisted_requests] [-u umask] [-m force_file_perms]\n"
" %s -Q protocol_feature\n",
__progname, __progname);
exit(1);
@@ -1520,7 +1531,7 @@ sftp_server_main(int argc, char **argv,
pw = pwcopy(user_pw);
while (!skipargs && (ch = getopt(argc, argv,
- "d:f:l:P:p:Q:u:cehR")) != -1) {
+ "d:f:l:P:p:Q:u:m:cehR")) != -1) {
switch (ch) {
case 'Q':
if (strcasecmp(optarg, "requests") != 0) {
@@ -1580,6 +1591,15 @@ sftp_server_main(int argc, char **argv,
fatal("Invalid umask \"%s\"", optarg);
(void)umask((mode_t)mask);
break;
+ case 'm':
+ /* Force permissions on file received via sftp */
+ permforce = 1;
+ permforcemode = strtol(optarg, &cp, 8);
+ if (permforcemode < 0 || permforcemode > 0777 ||
+ *cp != '\0' || (permforcemode == 0 &&
+ errno != 0))
+ fatal("Invalid file mode \"%s\"", optarg);
+ break;
case 'h':
default:
sftp_server_usage();

27
SOURCES/openssh-6.8p1-sshdT-output.patch Normal file
View File

@ -0,0 +1,27 @@
diff -up openssh/servconf.c.sshdt openssh/servconf.c
--- openssh/servconf.c.sshdt 2015-06-24 11:42:29.041078704 +0200
+++ openssh/servconf.c 2015-06-24 11:44:39.734745802 +0200
@@ -2317,7 +2317,7 @@ dump_config(ServerOptions *o)
dump_cfg_string(sXAuthLocation, o->xauth_location);
dump_cfg_string(sCiphers, o->ciphers ? o->ciphers : KEX_SERVER_ENCRYPT);
dump_cfg_string(sMacs, o->macs ? o->macs : KEX_SERVER_MAC);
- dump_cfg_string(sBanner, o->banner);
+ dump_cfg_string(sBanner, o->banner != NULL ? o->banner : "none");
dump_cfg_string(sForceCommand, o->adm_forced_command);
dump_cfg_string(sChrootDirectory, o->chroot_directory);
dump_cfg_string(sTrustedUserCAKeys, o->trusted_user_ca_keys);
diff -up openssh/ssh.1.sshdt openssh/ssh.1
--- openssh/ssh.1.sshdt 2015-06-24 11:42:19.565102807 +0200
+++ openssh/ssh.1 2015-06-24 11:42:29.042078701 +0200
@@ -441,7 +441,11 @@ For full details of the options listed b
.It GatewayPorts
.It GlobalKnownHostsFile
.It GSSAPIAuthentication
+.It GSSAPIKeyExchange
+.It GSSAPIClientIdentity
.It GSSAPIDelegateCredentials
+.It GSSAPIRenewalForcesRekey
+.It GSSAPITrustDNS
.It HashKnownHosts
.It Host
.It HostbasedAuthentication

12
SOURCES/openssh-6.9p1-permit-root-login.patch Normal file
View File

@ -0,0 +1,12 @@
diff -up openssh-7.0p1/sshd_config.root-login openssh-7.0p1/sshd_config
--- openssh-7.0p1/sshd_config.root-login 2015-08-12 11:29:12.919269245 +0200
+++ openssh-7.0p1/sshd_config 2015-08-12 11:31:03.653096466 +0200
@@ -46,7 +46,7 @@ SyslogFacility AUTHPRIV
# Authentication:
#LoginGraceTime 2m
-#PermitRootLogin prohibit-password
+PermitRootLogin yes
#StrictModes yes
#MaxAuthTries 6
#MaxSessions 10

431
SOURCES/openssh-7.0p1-gssKexAlgorithms.patch Normal file
View File

@ -0,0 +1,431 @@
diff -up openssh-7.0p1/gss-genr.c.gsskexalg openssh-7.0p1/gss-genr.c
--- openssh-7.0p1/gss-genr.c.gsskexalg 2015-08-19 12:28:38.024518959 +0200
+++ openssh-7.0p1/gss-genr.c 2015-08-19 12:28:38.078518839 +0200
@@ -78,7 +78,8 @@ ssh_gssapi_oid_table_ok() {
*/
char *
-ssh_gssapi_client_mechanisms(const char *host, const char *client) {
+ssh_gssapi_client_mechanisms(const char *host, const char *client,
+ const char *kex) {
gss_OID_set gss_supported;
OM_uint32 min_status;
@@ -86,12 +87,12 @@ ssh_gssapi_client_mechanisms(const char
return NULL;
return(ssh_gssapi_kex_mechs(gss_supported, ssh_gssapi_check_mechanism,
- host, client));
+ host, client, kex));
}
char *
ssh_gssapi_kex_mechs(gss_OID_set gss_supported, ssh_gssapi_check_fn *check,
- const char *host, const char *client) {
+ const char *host, const char *client, const char *kex) {
struct sshbuf *buf;
size_t i;
int oidpos, enclen, r;
@@ -100,6 +101,7 @@ ssh_gssapi_kex_mechs(gss_OID_set gss_sup
char deroid[2];
const EVP_MD *evp_md = EVP_md5();
EVP_MD_CTX md;
+ char *s, *cp, *p;
if (gss_enc2oid != NULL) {
for (i = 0; gss_enc2oid[i].encoded != NULL; i++)
@@ -113,6 +115,7 @@ ssh_gssapi_kex_mechs(gss_OID_set gss_sup
fatal("%s: sshbuf_new failed", __func__);
oidpos = 0;
+ s = cp = xstrdup(kex);
for (i = 0; i < gss_supported->count; i++) {
if (gss_supported->elements[i].length < 128 &&
(*check)(NULL, &(gss_supported->elements[i]), host, client)) {
@@ -131,28 +134,25 @@ ssh_gssapi_kex_mechs(gss_OID_set gss_sup
enclen = __b64_ntop(digest, EVP_MD_size(evp_md),
encoded, EVP_MD_size(evp_md) * 2);
- if (oidpos != 0)
- if ((r = sshbuf_put_u8(buf, ',')) != 0)
- fatal("%s: buffer error: %s", __func__, ssh_err(r));
-
- if ((r = sshbuf_put(buf, KEX_GSS_GEX_SHA1_ID,
- sizeof(KEX_GSS_GEX_SHA1_ID) - 1)) != 0 ||
- (r = sshbuf_put(buf, encoded, enclen)) != 0 ||
- (r = sshbuf_put_u8(buf, ',')) != 0 ||
- (r = sshbuf_put(buf, KEX_GSS_GRP1_SHA1_ID,
- sizeof(KEX_GSS_GRP1_SHA1_ID) - 1)) != 0 ||
- (r = sshbuf_put(buf, encoded, enclen)) != 0 ||
- (r = sshbuf_put_u8(buf, ',')) != 0 ||
- (r = sshbuf_put(buf, KEX_GSS_GRP14_SHA1_ID,
- sizeof(KEX_GSS_GRP14_SHA1_ID) - 1)) != 0 ||
- (r = sshbuf_put(buf, encoded, enclen)) != 0)
- fatal("%s: buffer error: %s", __func__, ssh_err(r));
+ cp = strncpy(s, kex, strlen(kex));
+ for ((p = strsep(&cp, ",")); p && *p != '\0';
+ (p = strsep(&cp, ","))) {
+ if (sshbuf_len(buf) != 0)
+ if ((r = sshbuf_put_u8(buf, ',')) != 0)
+ fatal("%s: buffer error: %s",
+ __func__, ssh_err(r));
+ if ((r = sshbuf_put(buf, p, strlen(p))) != 0 ||
+ (r = sshbuf_put(buf, encoded, enclen)) != 0)
+ fatal("%s: buffer error: %s",
+ __func__, ssh_err(r));
+ }
gss_enc2oid[oidpos].oid = &(gss_supported->elements[i]);
gss_enc2oid[oidpos].encoded = encoded;
oidpos++;
}
}
+ free(s);
gss_enc2oid[oidpos].oid = NULL;
gss_enc2oid[oidpos].encoded = NULL;
diff -up openssh-7.0p1/gss-serv.c.gsskexalg openssh-7.0p1/gss-serv.c
--- openssh-7.0p1/gss-serv.c.gsskexalg 2015-08-19 12:28:38.024518959 +0200
+++ openssh-7.0p1/gss-serv.c 2015-08-19 12:28:38.078518839 +0200
@@ -149,7 +149,8 @@ ssh_gssapi_server_mechanisms() {
if (supported_oids == NULL)
ssh_gssapi_prepare_supported_oids();
return (ssh_gssapi_kex_mechs(supported_oids,
- &ssh_gssapi_server_check_mech, NULL, NULL));
+ &ssh_gssapi_server_check_mech, NULL, NULL,
+ options.gss_kex_algorithms));
}
/* Unprivileged */
diff -up openssh-7.0p1/kex.c.gsskexalg openssh-7.0p1/kex.c
--- openssh-7.0p1/kex.c.gsskexalg 2015-08-19 12:28:38.078518839 +0200
+++ openssh-7.0p1/kex.c 2015-08-19 12:30:13.249306371 +0200
@@ -50,6 +50,7 @@
#include "misc.h"
#include "dispatch.h"
#include "monitor.h"
+#include "xmalloc.h"
#include "ssherr.h"
#include "sshbuf.h"
@@ -232,6 +232,29 @@ kex_assemble_names(const char *def, char
return r;
}
+/* Validate GSS KEX method name list */
+int
+gss_kex_names_valid(const char *names)
+{
+ char *s, *cp, *p;
+
+ if (names == NULL || *names == '\0')
+ return 0;
+ s = cp = xstrdup(names);
+ for ((p = strsep(&cp, ",")); p && *p != '\0';
+ (p = strsep(&cp, ","))) {
+ if (strncmp(p, "gss-", 4) != 0
+ || kex_alg_by_name(p) == NULL) {
+ error("Unsupported KEX algorithm \"%.100s\"", p);
+ free(s);
+ return 0;
+ }
+ }
+ debug3("gss kex names ok: [%s]", names);
+ free(s);
+ return 1;
+}
+
/* put algorithm proposal into buffer */
int
kex_prop2buf(struct sshbuf *b, char *proposal[PROPOSAL_MAX])
diff -up openssh-7.0p1/kex.h.gsskexalg openssh-7.0p1/kex.h
--- openssh-7.0p1/kex.h.gsskexalg 2015-08-19 12:28:38.078518839 +0200
+++ openssh-7.0p1/kex.h 2015-08-19 12:30:52.404218958 +0200
@@ -173,6 +173,7 @@ int kex_names_valid(const char *);
char *kex_alg_list(char);
char *kex_names_cat(const char *, const char *);
int kex_assemble_names(char **, const char *, const char *);
+int gss_kex_names_valid(const char *);
int kex_new(struct ssh *, char *[PROPOSAL_MAX], struct kex **);
int kex_setup(struct ssh *, char *[PROPOSAL_MAX]);
diff -up openssh-7.0p1/readconf.c.gsskexalg openssh-7.0p1/readconf.c
--- openssh-7.0p1/readconf.c.gsskexalg 2015-08-19 12:28:38.026518955 +0200
+++ openssh-7.0p1/readconf.c 2015-08-19 12:31:28.333138747 +0200
@@ -61,6 +61,7 @@
#include "uidswap.h"
#include "myproposal.h"
#include "digest.h"
+#include "ssh-gss.h"
/* Format of the configuration file:
@@ -148,7 +149,7 @@ typedef enum {
oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
oAddressFamily, oGssAuthentication, oGssDelegateCreds,
oGssTrustDns, oGssKeyEx, oGssClientIdentity, oGssRenewalRekey,
- oGssServerIdentity,
+ oGssServerIdentity, oGssKexAlgorithms,
oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
oSendEnv, oSetEnv, oControlPath, oControlMaster, oControlPersist,
oHashKnownHosts,
@@ -200,6 +201,7 @@ static struct {
{ "gssapiclientidentity", oGssClientIdentity },
{ "gssapiserveridentity", oGssServerIdentity },
{ "gssapirenewalforcesrekey", oGssRenewalRekey },
+ { "gssapikexalgorithms", oGssKexAlgorithms },
# else
{ "gssapiauthentication", oUnsupported },
{ "gssapikeyexchange", oUnsupported },
@@ -207,6 +209,7 @@ static struct {
{ "gssapitrustdns", oUnsupported },
{ "gssapiclientidentity", oUnsupported },
{ "gssapirenewalforcesrekey", oUnsupported },
+ { "gssapikexalgorithms", oUnsupported },
#endif
#ifdef ENABLE_PKCS11
{ "smartcarddevice", oPKCS11Provider },
@@ -929,6 +932,18 @@ parse_time:
intptr = &options->gss_renewal_rekey;
goto parse_flag;
+ case oGssKexAlgorithms:
+ arg = strdelim(&s);
+ if (!arg || *arg == '\0')
+ fatal("%.200s line %d: Missing argument.",
+ filename, linenum);
+ if (!gss_kex_names_valid(arg))
+ fatal("%.200s line %d: Bad GSSAPI KexAlgorithms '%s'.",
+ filename, linenum, arg ? arg : "<NONE>");
+ if (*activep && options->gss_kex_algorithms == NULL)
+ options->gss_kex_algorithms = xstrdup(arg);
+ break;
+
case oBatchMode:
intptr = &options->batch_mode;
goto parse_flag;
@@ -1638,6 +1653,7 @@ initialize_options(Options * options)
options->gss_renewal_rekey = -1;
options->gss_client_identity = NULL;
options->gss_server_identity = NULL;
+ options->gss_kex_algorithms = NULL;
options->password_authentication = -1;
options->kbd_interactive_authentication = -1;
options->kbd_interactive_devices = NULL;
@@ -1773,6 +1789,10 @@ fill_default_options(Options * options)
options->gss_trust_dns = 0;
if (options->gss_renewal_rekey == -1)
options->gss_renewal_rekey = 0;
+#ifdef GSSAPI
+ if (options->gss_kex_algorithms == NULL)
+ options->gss_kex_algorithms = strdup(GSS_KEX_DEFAULT_KEX);
+#endif
if (options->password_authentication == -1)
options->password_authentication = 1;
if (options->kbd_interactive_authentication == -1)
@@ -2651,6 +2671,8 @@ dump_client_config(Options *o, const cha
dump_cfg_string(oGssClientIdentity, o->gss_client_identity);
dump_cfg_string(oGssServerIdentity, o->gss_client_identity);
dump_cfg_fmtint(oGssRenewalRekey, o->gss_renewal_rekey);
+ dump_cfg_string(oGssKexAlgorithms, o->gss_kex_algorithms ?
+ o->gss_kex_algorithms : GSS_KEX_DEFAULT_KEX);
#endif /* GSSAPI */
dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
diff -up openssh-7.9p1/readconf.h.gsskexalg openssh-7.9p1/readconf.h
--- openssh-7.9p1/readconf.h.gsskexalg 2018-11-14 09:20:06.616350574 +0100
+++ openssh-7.9p1/readconf.h 2018-11-14 09:20:06.647350828 +0100
@@ -46,6 +46,7 @@ typedef struct {
int gss_renewal_rekey; /* Credential renewal forces rekey */
char *gss_client_identity; /* Principal to initiate GSSAPI with */
char *gss_server_identity; /* GSSAPI target principal */
+ char *gss_kex_algorithms; /* GSSAPI kex methods to be offered by client. */
int password_authentication; /* Try password
* authentication. */
int kbd_interactive_authentication; /* Try keyboard-interactive auth. */
diff -up openssh-7.0p1/servconf.c.gsskexalg openssh-7.0p1/servconf.c
--- openssh-7.0p1/servconf.c.gsskexalg 2015-08-19 12:28:38.074518847 +0200
+++ openssh-7.0p1/servconf.c 2015-08-19 12:33:13.599902732 +0200
@@ -57,6 +57,7 @@
#include "auth.h"
#include "myproposal.h"
#include "digest.h"
+#include "ssh-gss.h"
static void add_listen_addr(ServerOptions *, const char *,
const char *, int);
@@ -121,6 +122,7 @@ initialize_server_options(ServerOptions
options->gss_cleanup_creds = -1;
options->gss_strict_acceptor = -1;
options->gss_store_rekey = -1;
+ options->gss_kex_algorithms = NULL;
options->use_kuserok = -1;
options->enable_k5users = -1;
options->password_authentication = -1;
@@ -288,6 +290,10 @@ fill_default_server_options(ServerOption
options->gss_strict_acceptor = 1;
if (options->gss_store_rekey == -1)
options->gss_store_rekey = 0;
+#ifdef GSSAPI
+ if (options->gss_kex_algorithms == NULL)
+ options->gss_kex_algorithms = strdup(GSS_KEX_DEFAULT_KEX);
+#endif
if (options->use_kuserok == -1)
options->use_kuserok = 1;
if (options->enable_k5users == -1)
@@ -427,7 +431,7 @@ typedef enum {
sHostKeyAlgorithms,
sClientAliveInterval, sClientAliveCountMax, sAuthorizedKeysFile,
sGssAuthentication, sGssCleanupCreds, sGssEnablek5users, sGssStrictAcceptor,
- sGssKeyEx, sGssStoreRekey, sAcceptEnv, sSetEnv, sPermitTunnel,
+ sGssKeyEx, sGssStoreRekey, sGssKexAlgorithms, sAcceptEnv, sSetEnv, sPermitTunnel,
sMatch, sPermitOpen, sPermitListen, sForceCommand, sChrootDirectory,
sUsePrivilegeSeparation, sAllowAgentForwarding,
sHostCertificate,
@@ -506,6 +510,7 @@ static struct {
{ "gssapikeyexchange", sGssKeyEx, SSHCFG_GLOBAL },
{ "gssapistorecredentialsonrekey", sGssStoreRekey, SSHCFG_GLOBAL },
{ "gssapienablek5users", sGssEnablek5users, SSHCFG_ALL },
+ { "gssapikexalgorithms", sGssKexAlgorithms, SSHCFG_GLOBAL },
#else
{ "gssapiauthentication", sUnsupported, SSHCFG_ALL },
{ "gssapicleanupcredentials", sUnsupported, SSHCFG_GLOBAL },
@@ -513,6 +518,7 @@ static struct {
{ "gssapikeyexchange", sUnsupported, SSHCFG_GLOBAL },
{ "gssapistorecredentialsonrekey", sUnsupported, SSHCFG_GLOBAL },
{ "gssapienablek5users", sUnsupported, SSHCFG_ALL },
+ { "gssapikexalgorithms", sUnsupported, SSHCFG_GLOBAL },
#endif
{ "gssusesessionccache", sUnsupported, SSHCFG_GLOBAL },
{ "gssapiusesessioncredcache", sUnsupported, SSHCFG_GLOBAL },
@@ -1273,6 +1279,18 @@ process_server_config_line(ServerOptions
intptr = &options->gss_store_rekey;
goto parse_flag;
+ case sGssKexAlgorithms:
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%.200s line %d: Missing argument.",
+ filename, linenum);
+ if (!gss_kex_names_valid(arg))
+ fatal("%.200s line %d: Bad GSSAPI KexAlgorithms '%s'.",
+ filename, linenum, arg ? arg : "<NONE>");
+ if (*activep && options->gss_kex_algorithms == NULL)
+ options->gss_kex_algorithms = xstrdup(arg);
+ break;
+
case sPasswordAuthentication:
intptr = &options->password_authentication;
goto parse_flag;
@@ -2304,6 +2322,7 @@ dump_config(ServerOptions *o)
dump_cfg_fmtint(sGssKeyEx, o->gss_keyex);
dump_cfg_fmtint(sGssStrictAcceptor, o->gss_strict_acceptor);
dump_cfg_fmtint(sGssStoreRekey, o->gss_store_rekey);
+ dump_cfg_string(sGssKexAlgorithms, o->gss_kex_algorithms);
#endif
dump_cfg_fmtint(sPasswordAuthentication, o->password_authentication);
dump_cfg_fmtint(sKbdInteractiveAuthentication,
diff -up openssh-7.0p1/servconf.h.gsskexalg openssh-7.0p1/servconf.h
--- openssh-7.0p1/servconf.h.gsskexalg 2015-08-19 12:28:38.080518834 +0200
+++ openssh-7.0p1/servconf.h 2015-08-19 12:34:46.328693944 +0200
@@ -122,6 +122,7 @@ typedef struct {
int gss_cleanup_creds; /* If true, destroy cred cache on logout */
int gss_strict_acceptor; /* If true, restrict the GSSAPI acceptor name */
int gss_store_rekey;
+ char *gss_kex_algorithms; /* GSSAPI kex methods to be offered by client. */
int password_authentication; /* If true, permit password
* authentication. */
int kbd_interactive_authentication; /* If true, permit */
diff -up openssh-7.0p1/ssh.1.gsskexalg openssh-7.0p1/ssh.1
--- openssh-7.0p1/ssh.1.gsskexalg 2015-08-19 12:28:38.081518832 +0200
+++ openssh-7.0p1/ssh.1 2015-08-19 12:35:31.741591692 +0200
@@ -496,6 +496,7 @@ For full details of the options listed b
.It GSSAPIDelegateCredentials
.It GSSAPIRenewalForcesRekey
.It GSSAPITrustDNS
+.It GSSAPIKexAlgorithms
.It HashKnownHosts
.It Host
.It HostbasedAuthentication
diff -up openssh-7.0p1/ssh_config.5.gsskexalg openssh-7.0p1/ssh_config.5
--- openssh-7.0p1/ssh_config.5.gsskexalg 2015-08-19 12:28:38.028518950 +0200
+++ openssh-7.0p1/ssh_config.5 2015-08-19 12:28:38.082518830 +0200
@@ -786,6 +786,18 @@ command line will be passed untouched to
command line will be passed untouched to the GSSAPI library.
The default is
.Dq no .
+.It Cm GSSAPIKexAlgorithms
+The list of key exchange algorithms that are offered for GSSAPI
+key exchange. Possible values are
+.Bd -literal -offset 3n
+gss-gex-sha1-,
+gss-group1-sha1-,
+gss-group14-sha1-
+.Ed
+.Pp
+The default is
+.Dq gss-gex-sha1-,gss-group14-sha1- .
+This option only applies to protocol version 2 connections using GSSAPI.
.It Cm HashKnownHosts
Indicates that
.Xr ssh 1
diff -up openssh-7.0p1/sshconnect2.c.gsskexalg openssh-7.0p1/sshconnect2.c
--- openssh-7.0p1/sshconnect2.c.gsskexalg 2015-08-19 12:28:38.045518912 +0200
+++ openssh-7.0p1/sshconnect2.c 2015-08-19 12:28:38.081518832 +0200
@@ -179,7 +179,8 @@ ssh_kex2(char *host, struct sockaddr *ho
else
gss_host = host;
- gss = ssh_gssapi_client_mechanisms(gss_host, options.gss_client_identity);
+ gss = ssh_gssapi_client_mechanisms(gss_host,
+ options.gss_client_identity, options.gss_kex_algorithms);
if (gss) {
debug("Offering GSSAPI proposal: %s", gss);
xasprintf(&options.kex_algorithms,
--- openssh-7.1p1/sshd_config.5.gsskexalg 2015-12-10 15:32:48.105418092 +0100
+++ openssh-7.1p1/sshd_config.5 2015-12-10 15:33:47.771279548 +0100
@@ -663,6 +663,18 @@ or updated credentials from a compatible
For this to work
.Cm GSSAPIKeyExchange
needs to be enabled in the server and also used by the client.
+.It Cm GSSAPIKexAlgorithms
+The list of key exchange algorithms that are accepted by GSSAPI
+key exchange. Possible values are
+.Bd -literal -offset 3n
+gss-gex-sha1-,
+gss-group1-sha1-,
+gss-group14-sha1-
+.Ed
+.Pp
+The default is
+.Dq gss-gex-sha1-,gss-group14-sha1- .
+This option only applies to protocol version 2 connections using GSSAPI.
.It Cm HostbasedAcceptedKeyTypes
Specifies the key types that will be accepted for hostbased authentication
as a list of comma-separated patterns.
diff -up openssh-7.0p1/ssh-gss.h.gsskexalg openssh-7.0p1/ssh-gss.h
--- openssh-7.0p1/ssh-gss.h.gsskexalg 2015-08-19 12:28:38.031518944 +0200
+++ openssh-7.0p1/ssh-gss.h 2015-08-19 12:28:38.081518832 +0200
@@ -76,6 +76,10 @@ extern char **k5users_allowed_cmds;
#define KEX_GSS_GRP14_SHA1_ID "gss-group14-sha1-"
#define KEX_GSS_GEX_SHA1_ID "gss-gex-sha1-"
+#define GSS_KEX_DEFAULT_KEX \
+ KEX_GSS_GEX_SHA1_ID "," \
+ KEX_GSS_GRP14_SHA1_ID
+
typedef struct {
char *envvar;
char *envval;
@@ -147,9 +151,9 @@ int ssh_gssapi_credentials_updated(Gssct
/* In the server */
typedef int ssh_gssapi_check_fn(Gssctxt **, gss_OID, const char *,
const char *);
-char *ssh_gssapi_client_mechanisms(const char *, const char *);
+char *ssh_gssapi_client_mechanisms(const char *, const char *, const char *);
char *ssh_gssapi_kex_mechs(gss_OID_set, ssh_gssapi_check_fn *, const char *,
- const char *);
+ const char *, const char *);
gss_OID ssh_gssapi_id_kex(Gssctxt *, char *, int);
int ssh_gssapi_server_check_mech(Gssctxt **,gss_OID, const char *,
const char *);

52
SOURCES/openssh-7.1p1-gssapi-documentation.patch Normal file
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@ -0,0 +1,52 @@
diff -up openssh-7.4p1/ssh_config.5.gss-docs openssh-7.4p1/ssh_config.5
--- openssh-7.4p1/ssh_config.5.gss-docs 2016-12-23 14:28:34.051714486 +0100
+++ openssh-7.4p1/ssh_config.5 2016-12-23 14:34:24.568522417 +0100
@@ -765,10 +765,19 @@ The default is
If set to
.Dq yes
then renewal of the client's GSSAPI credentials will force the rekeying of the
-ssh connection. With a compatible server, this can delegate the renewed
+ssh connection. With a compatible server, this will delegate the renewed
credentials to a session on the server.
+.Pp
+Checks are made to ensure that credentials are only propagated when the new
+credentials match the old ones on the originating client and where the
+receiving server still has the old set in its cache.
+.Pp
The default is
.Dq no .
+.Pp
+For this to work
+.Cm GSSAPIKeyExchange
+needs to be enabled in the server and also used by the client.
.It Cm GSSAPIServerIdentity
If set, specifies the GSSAPI server identity that ssh should expect when
connecting to the server. The default is unset, which means that the
@@ -776,9 +785,11 @@ expected GSSAPI server identity will be
hostname.
.It Cm GSSAPITrustDns
Set to
-.Dq yes to indicate that the DNS is trusted to securely canonicalize
+.Dq yes
+to indicate that the DNS is trusted to securely canonicalize
the name of the host being connected to. If
-.Dq no, the hostname entered on the
+.Dq no ,
+the hostname entered on the
command line will be passed untouched to the GSSAPI library.
The default is
.Dq no .
diff -up openssh-7.4p1/sshd_config.5.gss-docs openssh-7.4p1/sshd_config.5
--- openssh-7.4p1/sshd_config.5.gss-docs 2016-12-23 14:28:34.043714490 +0100
+++ openssh-7.4p1/sshd_config.5 2016-12-23 14:28:34.051714486 +0100
@@ -652,6 +652,10 @@ Controls whether the user's GSSAPI crede
successful connection rekeying. This option can be used to accepted renewed
or updated credentials from a compatible client. The default is
.Dq no .
+.Pp
+For this to work
+.Cm GSSAPIKeyExchange
+needs to be enabled in the server and also used by the client.
.It Cm HostbasedAcceptedKeyTypes
Specifies the key types that will be accepted for hostbased authentication
as a list of comma-separated patterns.

187
SOURCES/openssh-7.1p2-audit-race-condition.patch Normal file
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@ -0,0 +1,187 @@
diff -up openssh-7.4p1/monitor_wrap.c.audit-race openssh-7.4p1/monitor_wrap.c
--- openssh-7.4p1/monitor_wrap.c.audit-race 2016-12-23 16:35:52.694685771 +0100
+++ openssh-7.4p1/monitor_wrap.c 2016-12-23 16:35:52.697685772 +0100
@@ -1107,4 +1107,50 @@ mm_audit_destroy_sensitive_data(const ch
mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_SERVER_KEY_FREE, m);
sshbuf_free(m);
}
+
+int mm_forward_audit_messages(int fdin)
+{
+ u_char buf[4];
+ u_int blen, msg_len;
+ struct sshbuf *m;
+ int r, ret = 0;
+
+ debug3("%s: entering", __func__);
+ if ((m = sshbuf_new()) == NULL)
+ fatal("%s: sshbuf_new failed", __func__);
+ do {
+ blen = atomicio(read, fdin, buf, sizeof(buf));
+ if (blen == 0) /* closed pipe */
+ break;
+ if (blen != sizeof(buf)) {
+ error("%s: Failed to read the buffer from child", __func__);
+ ret = -1;
+ break;
+ }
+
+ msg_len = get_u32(buf);
+ if (msg_len > 256 * 1024)
+ fatal("%s: read: bad msg_len %d", __func__, msg_len);
+ sshbuf_reset(m);
+ if ((r = sshbuf_reserve(m, msg_len, NULL)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
+ if (atomicio(read, fdin, sshbuf_mutable_ptr(m), msg_len) != msg_len) {
+ error("%s: Failed to read the the buffer content from the child", __func__);
+ ret = -1;
+ break;
+ }
+ if (atomicio(vwrite, pmonitor->m_recvfd, buf, blen) != blen ||
+ atomicio(vwrite, pmonitor->m_recvfd, sshbuf_mutable_ptr(m), msg_len) != msg_len) {
+ error("%s: Failed to write the message to the monitor", __func__);
+ ret = -1;
+ break;
+ }
+ } while (1);
+ sshbuf_free(m);
+ return ret;
+}
+void mm_set_monitor_pipe(int fd)
+{
+ pmonitor->m_recvfd = fd;
+}
#endif /* SSH_AUDIT_EVENTS */
diff -up openssh-7.4p1/monitor_wrap.h.audit-race openssh-7.4p1/monitor_wrap.h
--- openssh-7.4p1/monitor_wrap.h.audit-race 2016-12-23 16:35:52.694685771 +0100
+++ openssh-7.4p1/monitor_wrap.h 2016-12-23 16:35:52.698685772 +0100
@@ -83,6 +83,8 @@ void mm_audit_unsupported_body(int);
void mm_audit_kex_body(int, char *, char *, char *, char *, pid_t, uid_t);
void mm_audit_session_key_free_body(int, pid_t, uid_t);
void mm_audit_destroy_sensitive_data(const char *, pid_t, uid_t);
+int mm_forward_audit_messages(int);
+void mm_set_monitor_pipe(int);
#endif
struct Session;
diff -up openssh-7.4p1/session.c.audit-race openssh-7.4p1/session.c
--- openssh-7.4p1/session.c.audit-race 2016-12-23 16:35:52.695685771 +0100
+++ openssh-7.4p1/session.c 2016-12-23 16:37:26.339730596 +0100
@@ -162,6 +162,10 @@ static Session *sessions = NULL;
login_cap_t *lc;
#endif
+#ifdef SSH_AUDIT_EVENTS
+int paudit[2];
+#endif
+
static int is_child = 0;
static int in_chroot = 0;
static int have_dev_log = 1;
@@ -289,6 +293,8 @@ xauth_valid_string(const char *s)
return 1;
}
+void child_destory_sensitive_data();
+
#define USE_PIPES 1
/*
* This is called to fork and execute a command when we have no tty. This
@@ -424,6 +430,8 @@ do_exec_no_pty(Session *s, const char *c
close(err[0]);
#endif
+ child_destory_sensitive_data();
+
/* Do processing for the child (exec command etc). */
do_child(ssh, s, command);
/* NOTREACHED */
@@ -547,6 +555,9 @@ do_exec_pty(Session *s, const char *comm
/* Close the extra descriptor for the pseudo tty. */
close(ttyfd);
+ /* Do this early, so we will not block large MOTDs */
+ child_destory_sensitive_data();
+
/* record login, etc. similar to login(1) */
#ifndef HAVE_OSF_SIA
do_login(ssh, s, command);
@@ -717,6 +728,8 @@ do_exec(Session *s, const char *command)
}
if (s->command != NULL && s->ptyfd == -1)
s->command_handle = PRIVSEP(audit_run_command(s->command));
+ if (pipe(paudit) < 0)
+ fatal("pipe: %s", strerror(errno));
#endif
if (s->ttyfd != -1)
ret = do_exec_pty(ssh, s, command);
@@ -732,6 +745,20 @@ do_exec(Session *s, const char *command)
*/
sshbuf_reset(loginmsg);
+#ifdef SSH_AUDIT_EVENTS
+ close(paudit[1]);
+ if (use_privsep && ret == 0) {
+ /*
+ * Read the audit messages from forked child and send them
+ * back to monitor. We don't want to communicate directly,
+ * because the messages might get mixed up.
+ * Continue after the pipe gets closed (all messages sent).
+ */
+ ret = mm_forward_audit_messages(paudit[0]);
+ }
+ close(paudit[0]);
+#endif /* SSH_AUDIT_EVENTS */
+
return ret;
}
@@ -1538,6 +1565,34 @@ child_close_fds(void)
endpwent();
}
+void
+child_destory_sensitive_data()
+{
+#ifdef SSH_AUDIT_EVENTS
+ int pparent = paudit[1];
+ close(paudit[0]);
+ /* Hack the monitor pipe to avoid race condition with parent */
+ if (use_privsep)
+ mm_set_monitor_pipe(pparent);
+#endif
+
+ /* remove hostkey from the child's memory */
+ destroy_sensitive_data(use_privsep);
+ /*
+ * We can audit this, because we hacked the pipe to direct the
+ * messages over postauth child. But this message requires answer
+ * which we can't do using one-way pipe.
+ */
+ packet_destroy_all(0, 1);
+ /* XXX this will clean the rest but should not audit anymore */
+ /* packet_clear_keys(); */
+
+#ifdef SSH_AUDIT_EVENTS
+ /* Notify parent that we are done */
+ close(pparent);
+#endif
+}
+
/*
* Performs common processing for the child, such as setting up the
* environment, closing extra file descriptors, setting the user and group
@@ -1554,13 +1608,6 @@ do_child(Session *s, const char *command
struct passwd *pw = s->pw;
int r = 0;
- /* remove hostkey from the child's memory */
- destroy_sensitive_data(1);
- packet_clear_keys();
- /* Don't audit this - both us and the parent would be talking to the
- monitor over a single socket, with no synchronization. */
- packet_destroy_all(0, 1);
-
/* Force a password change */
if (s->authctxt->force_pwchange) {
do_setusercontext(pw);

87
SOURCES/openssh-7.2p2-k5login_directory.patch Normal file
View File

@ -0,0 +1,87 @@
diff --git a/auth-krb5.c b/auth-krb5.c
index 2b02a04..19b9364 100644
--- a/auth-krb5.c
+++ b/auth-krb5.c
@@ -375,6 +375,22 @@ cleanup:
return -1;
}
+/*
+ * Reads k5login_directory option from the krb5.conf
+ */
+krb5_error_code
+ssh_krb5_get_k5login_directory(krb5_context ctx, char **k5login_directory) {
+ profile_t p;
+ int ret = 0;
+
+ ret = krb5_get_profile(ctx, &p);
+ if (ret)
+ return ret;
+
+ return profile_get_string(p, "libdefaults", "k5login_directory", NULL, NULL,
+ k5login_directory);
+}
+
krb5_error_code
ssh_krb5_get_cctemplate(krb5_context ctx, char **ccname) {
profile_t p;
diff --git a/auth.h b/auth.h
index f9d191c..c432d2f 100644
--- a/auth.h
+++ b/auth.h
@@ -222,5 +222,7 @@ int sys_auth_passwd(Authctxt *, const char *);
#if defined(KRB5) && !defined(HEIMDAL)
#include <krb5.h>
krb5_error_code ssh_krb5_cc_new_unique(krb5_context, krb5_ccache *, int *);
+krb5_error_code ssh_krb5_get_k5login_directory(krb5_context ctx,
+ char **k5login_directory);
#endif
#endif
diff --git a/gss-serv-krb5.c b/gss-serv-krb5.c
index a7c0c5f..df8cc9a 100644
--- a/gss-serv-krb5.c
+++ b/gss-serv-krb5.c
@@ -244,8 +244,27 @@ ssh_gssapi_k5login_exists()
{
char file[MAXPATHLEN];
struct passwd *pw = the_authctxt->pw;
+ char *k5login_directory = NULL;
+ int ret = 0;
+
+ ret = ssh_krb5_get_k5login_directory(krb_context, &k5login_directory);
+ debug3("%s: k5login_directory = %s (rv=%d)", __func__, k5login_directory, ret);
+ if (k5login_directory == NULL || ret != 0) {
+ /* If not set, the library will look for k5login
+ * files in the user's home directory, with the filename .k5login.
+ */
+ snprintf(file, sizeof(file), "%s/.k5login", pw->pw_dir);
+ } else {
+ /* If set, the library will look for a local user's k5login file
+ * within the named directory, with a filename corresponding to the
+ * local username.
+ */
+ snprintf(file, sizeof(file), "%s%s%s", k5login_directory,
+ k5login_directory[strlen(k5login_directory)-1] != '/' ? "/" : "",
+ pw->pw_name);
+ }
+ debug("%s: Checking existence of file %s", __func__, file);
- snprintf(file, sizeof(file), "%s/.k5login", pw->pw_dir);
return access(file, F_OK) == 0;
}
diff --git a/sshd.8 b/sshd.8
index 5c4f15b..135e290 100644
--- a/sshd.8
+++ b/sshd.8
@@ -806,6 +806,10 @@ rlogin/rsh.
These files enforce GSSAPI/Kerberos authentication access control.
Further details are described in
.Xr ksu 1 .
+The location of the k5login file depends on the configuration option
+.Cm k5login_directory
+in the
+.Xr krb5.conf 5 .
.Pp
.It Pa ~/.ssh/
This directory is the default location for all user-specific configuration

52
SOURCES/openssh-7.2p2-s390-closefrom.patch Normal file
View File

@ -0,0 +1,52 @@
Zseries only: Leave the hardware filedescriptors open.
All filedescriptors above 2 are getting closed when a new
sshd process to handle a new client connection is
spawned. As the process also chroot into an empty filesystem
without any device nodes, there is no chance to reopen the
files. This patch filters out the reqired fds in the
closefrom function so these are skipped in the close loop.
Author: Harald Freudenberger <freude@de.ibm.com>
---
openbsd-compat/bsd-closefrom.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
--- a/openbsd-compat/bsd-closefrom.c
+++ b/openbsd-compat/bsd-closefrom.c
@@ -82,7 +82,33 @@ closefrom(int lowfd)
fd = strtol(dent->d_name, &endp, 10);
if (dent->d_name != endp && *endp == '\0' &&
fd >= 0 && fd < INT_MAX && fd >= lowfd && fd != dirfd(dirp))
+#ifdef __s390__
+ {
+ /*
+ * the filedescriptors used to communicate with
+ * the device drivers to provide hardware support
+ * should survive. HF <freude@de.ibm.com>
+ */
+ char fpath[PATH_MAX], lpath[PATH_MAX];
+ len = snprintf(fpath, sizeof(fpath), "%s/%s",
+ fdpath, dent->d_name);
+ if (len > 0 && (size_t)len <= sizeof(fpath)) {
+ len = readlink(fpath, lpath, sizeof(lpath));
+ if (len > 0) {
+ lpath[len] = 0;
+ if (strstr(lpath, "dev/z90crypt")
+ || strstr(lpath, "dev/zcrypt")
+ || strstr(lpath, "dev/prandom")
+ || strstr(lpath, "dev/shm/icastats"))
+ fd = -1;
+ }
+ }
+ if (fd >= 0)
+ (void) close((int) fd);
+ }
+#else
(void) close((int) fd);
+#endif
}
(void) closedir(dirp);
} else

53
SOURCES/openssh-7.2p2-x11.patch Normal file
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@ -0,0 +1,53 @@
diff -up openssh-7.2p2/channels.c.x11 openssh-7.2p2/channels.c
--- openssh-7.2p2/channels.c.x11 2016-03-09 19:04:48.000000000 +0100
+++ openssh-7.2p2/channels.c 2016-06-03 10:42:04.775164520 +0200
@@ -3990,21 +3990,24 @@ x11_create_display_inet(int x11_display_
}
static int
-connect_local_xsocket_path(const char *pathname)
+connect_local_xsocket_path(const char *pathname, int len)
{
int sock;
struct sockaddr_un addr;
+ if (len <= 0)
+ return -1;
sock = socket(AF_UNIX, SOCK_STREAM, 0);
if (sock < 0)
error("socket: %.100s", strerror(errno));
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
- strlcpy(addr.sun_path, pathname, sizeof addr.sun_path);
- if (connect(sock, (struct sockaddr *)&addr, sizeof(addr)) == 0)
+ if (len > sizeof addr.sun_path)
+ len = sizeof addr.sun_path;
+ memcpy(addr.sun_path, pathname, len);
+ if (connect(sock, (struct sockaddr *)&addr, sizeof addr - (sizeof addr.sun_path - len) ) == 0)
return sock;
close(sock);
- error("connect %.100s: %.100s", addr.sun_path, strerror(errno));
return -1;
}
@@ -4012,8 +4015,18 @@ static int
connect_local_xsocket(u_int dnr)
{
char buf[1024];
- snprintf(buf, sizeof buf, _PATH_UNIX_X, dnr);
- return connect_local_xsocket_path(buf);
+ int len, ret;
+ len = snprintf(buf + 1, sizeof (buf) - 1, _PATH_UNIX_X, dnr);
+#ifdef linux
+ /* try abstract socket first */
+ buf[0] = '\0';
+ if ((ret = connect_local_xsocket_path(buf, len + 1)) >= 0)
+ return ret;
+#endif
+ if ((ret = connect_local_xsocket_path(buf + 1, len)) >= 0)
+ return ret;
+ error("connect %.100s: %.100s", buf + 1, strerror(errno));
+ return -1;
}
#ifdef __APPLE__

2688
SOURCES/openssh-7.3p1-openssl-1.1.0.patch Normal file
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File diff suppressed because it is too large Load Diff

213
SOURCES/openssh-7.3p1-x11-max-displays.patch Normal file
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@ -0,0 +1,213 @@
diff -up openssh-7.4p1/channels.c.x11max openssh-7.4p1/channels.c
--- openssh-7.4p1/channels.c.x11max 2016-12-23 15:46:32.071506625 +0100
+++ openssh-7.4p1/channels.c 2016-12-23 15:46:32.139506636 +0100
@@ -152,8 +152,8 @@ static int all_opens_permitted = 0;
#define FWD_PERMIT_ANY_HOST "*"
/* -- X11 forwarding */
-/* Maximum number of fake X11 displays to try. */
-#define MAX_DISPLAYS 1000
+/* Minimum port number for X11 forwarding */
+#define X11_PORT_MIN 6000
/* Per-channel callback for pre/post select() actions */
typedef void chan_fn(struct ssh *, Channel *c,
@@ -4228,7 +4228,7 @@ channel_send_window_changes(void)
*/
int
x11_create_display_inet(struct ssh *ssh, int x11_display_offset,
- int x11_use_localhost, int single_connection,
+ int x11_use_localhost, int x11_max_displays, int single_connection,
u_int *display_numberp, int **chanids)
{
Channel *nc = NULL;
@@ -4240,10 +4241,15 @@ x11_create_display_inet(int x11_display_
if (chanids == NULL)
return -1;
+ /* Try to bind ports starting at 6000+X11DisplayOffset */
+ x11_max_displays = x11_max_displays + x11_display_offset;
+
for (display_number = x11_display_offset;
- display_number < MAX_DISPLAYS;
+ display_number < x11_max_displays;
display_number++) {
- port = 6000 + display_number;
+ port = X11_PORT_MIN + display_number;
+ if (port < X11_PORT_MIN) /* overflow */
+ break;
memset(&hints, 0, sizeof(hints));
hints.ai_family = ssh->chanctxt->IPv4or6;
hints.ai_flags = x11_use_localhost ? 0: AI_PASSIVE;
@@ -4295,7 +4301,7 @@ x11_create_display_inet(int x11_display_
if (num_socks > 0)
break;
}
- if (display_number >= MAX_DISPLAYS) {
+ if (display_number >= x11_max_displays || port < X11_PORT_MIN ) {
error("Failed to allocate internet-domain X11 display socket.");
return -1;
}
@@ -4441,7 +4447,7 @@ x11_connect_display(void)
memset(&hints, 0, sizeof(hints));
hints.ai_family = ssh->chanctxt->IPv4or6;
hints.ai_socktype = SOCK_STREAM;
- snprintf(strport, sizeof strport, "%u", 6000 + display_number);
+ snprintf(strport, sizeof strport, "%u", X11_PORT_MIN + display_number);
if ((gaierr = getaddrinfo(buf, strport, &hints, &aitop)) != 0) {
error("%.100s: unknown host. (%s)", buf,
ssh_gai_strerror(gaierr));
@@ -4457,7 +4463,7 @@ x11_connect_display(void)
/* Connect it to the display. */
if (connect(sock, ai->ai_addr, ai->ai_addrlen) < 0) {
debug2("connect %.100s port %u: %.100s", buf,
- 6000 + display_number, strerror(errno));
+ X11_PORT_MIN + display_number, strerror(errno));
close(sock);
continue;
}
@@ -4466,8 +4472,8 @@ x11_connect_display(void)
}
freeaddrinfo(aitop);
if (!ai) {
- error("connect %.100s port %u: %.100s", buf,
- 6000 + display_number, strerror(errno));
+ error("connect %.100s port %u: %.100s", buf,
+ X11_PORT_MIN + display_number, strerror(errno));
return -1;
}
set_nodelay(sock);
diff -up openssh-7.4p1/channels.h.x11max openssh-7.4p1/channels.h
--- openssh-7.4p1/channels.h.x11max 2016-12-19 05:59:41.000000000 +0100
+++ openssh-7.4p1/channels.h 2016-12-23 15:46:32.139506636 +0100
@@ -293,7 +293,7 @@ int permitopen_port(const char *);
void channel_set_x11_refuse_time(struct ssh *, u_int);
int x11_connect_display(struct ssh *);
-int x11_create_display_inet(struct ssh *, int, int, int, u_int *, int **);
+int x11_create_display_inet(struct ssh *, int, int, int, int, u_int *, int **);
void x11_request_forwarding_with_spoofing(struct ssh *, int,
const char *, const char *, const char *, int);
diff -up openssh-7.4p1/servconf.c.x11max openssh-7.4p1/servconf.c
--- openssh-7.4p1/servconf.c.x11max 2016-12-23 15:46:32.133506635 +0100
+++ openssh-7.4p1/servconf.c 2016-12-23 15:47:27.320519121 +0100
@@ -95,6 +95,7 @@ initialize_server_options(ServerOptions
options->print_lastlog = -1;
options->x11_forwarding = -1;
options->x11_display_offset = -1;
+ options->x11_max_displays = -1;
options->x11_use_localhost = -1;
options->permit_tty = -1;
options->permit_user_rc = -1;
@@ -243,6 +244,8 @@ fill_default_server_options(ServerOption
options->x11_forwarding = 0;
if (options->x11_display_offset == -1)
options->x11_display_offset = 10;
+ if (options->x11_max_displays == -1)
+ options->x11_max_displays = DEFAULT_MAX_DISPLAYS;
if (options->x11_use_localhost == -1)
options->x11_use_localhost = 1;
if (options->xauth_location == NULL)
@@ -419,7 +422,7 @@ typedef enum {
sPasswordAuthentication, sKbdInteractiveAuthentication,
sListenAddress, sAddressFamily,
sPrintMotd, sPrintLastLog, sIgnoreRhosts,
- sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost,
+ sX11Forwarding, sX11DisplayOffset, sX11MaxDisplays, sX11UseLocalhost,
sPermitTTY, sStrictModes, sEmptyPasswd, sTCPKeepAlive,
sPermitUserEnvironment, sAllowTcpForwarding, sCompression,
sRekeyLimit, sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
@@ -540,6 +543,7 @@ static struct {
{ "ignoreuserknownhosts", sIgnoreUserKnownHosts, SSHCFG_GLOBAL },
{ "x11forwarding", sX11Forwarding, SSHCFG_ALL },
{ "x11displayoffset", sX11DisplayOffset, SSHCFG_ALL },
+ { "x11maxdisplays", sX11MaxDisplays, SSHCFG_ALL },
{ "x11uselocalhost", sX11UseLocalhost, SSHCFG_ALL },
{ "xauthlocation", sXAuthLocation, SSHCFG_GLOBAL },
{ "strictmodes", sStrictModes, SSHCFG_GLOBAL },
@@ -1316,6 +1320,10 @@ process_server_config_line(ServerOptions
*intptr = value;
break;
+ case sX11MaxDisplays:
+ intptr = &options->x11_max_displays;
+ goto parse_int;
+
case sX11UseLocalhost:
intptr = &options->x11_use_localhost;
goto parse_flag;
@@ -2063,6 +2071,7 @@ copy_set_server_options(ServerOptions *d
M_CP_INTOPT(fwd_opts.streamlocal_bind_unlink);
M_CP_INTOPT(x11_display_offset);
M_CP_INTOPT(x11_forwarding);
+ M_CP_INTOPT(x11_max_displays);
M_CP_INTOPT(x11_use_localhost);
M_CP_INTOPT(permit_tty);
M_CP_INTOPT(permit_user_rc);
@@ -2315,6 +2324,7 @@ dump_config(ServerOptions *o)
#endif
dump_cfg_int(sLoginGraceTime, o->login_grace_time);
dump_cfg_int(sX11DisplayOffset, o->x11_display_offset);
+ dump_cfg_int(sX11MaxDisplays, o->x11_max_displays);
dump_cfg_int(sMaxAuthTries, o->max_authtries);
dump_cfg_int(sMaxSessions, o->max_sessions);
dump_cfg_int(sClientAliveInterval, o->client_alive_interval);
diff -up openssh-7.4p1/servconf.h.x11max openssh-7.4p1/servconf.h
--- openssh-7.4p1/servconf.h.x11max 2016-12-23 15:46:32.133506635 +0100
+++ openssh-7.4p1/servconf.h 2016-12-23 15:46:32.140506636 +0100
@@ -55,6 +55,7 @@
#define DEFAULT_AUTH_FAIL_MAX 6 /* Default for MaxAuthTries */
#define DEFAULT_SESSIONS_MAX 10 /* Default for MaxSessions */
+#define DEFAULT_MAX_DISPLAYS 1000 /* Maximum number of fake X11 displays to try. */
/* Magic name for internal sftp-server */
#define INTERNAL_SFTP_NAME "internal-sftp"
@@ -85,6 +86,7 @@ typedef struct {
int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */
int x11_display_offset; /* What DISPLAY number to start
* searching at */
+ int x11_max_displays; /* Number of displays to search */
int x11_use_localhost; /* If true, use localhost for fake X11 server. */
char *xauth_location; /* Location of xauth program */
int permit_tty; /* If false, deny pty allocation */
diff -up openssh-7.4p1/session.c.x11max openssh-7.4p1/session.c
--- openssh-7.4p1/session.c.x11max 2016-12-23 15:46:32.136506636 +0100
+++ openssh-7.4p1/session.c 2016-12-23 15:46:32.141506636 +0100
@@ -2518,8 +2518,9 @@ session_setup_x11fwd(Session *s)
return 0;
}
if (x11_create_display_inet(ssh, options.x11_display_offset,
- options.x11_use_localhost, s->single_connection,
- &s->display_number, &s->x11_chanids) == -1) {
+ options.x11_use_localhost, options.x11_max_displays,
+ s->single_connection, &s->display_number,
+ &s->x11_chanids) == -1) {
debug("x11_create_display_inet failed.");
return 0;
}
diff -up openssh-7.4p1/sshd_config.5.x11max openssh-7.4p1/sshd_config.5
--- openssh-7.4p1/sshd_config.5.x11max 2016-12-23 15:46:32.134506635 +0100
+++ openssh-7.4p1/sshd_config.5 2016-12-23 15:46:32.141506636 +0100
@@ -1133,6 +1133,7 @@ Available keywords are
.Cm StreamLocalBindUnlink ,
.Cm TrustedUserCAKeys ,
.Cm X11DisplayOffset ,
+.Cm X11MaxDisplays ,
.Cm X11Forwarding
and
.Cm X11UseLocalHost .
@@ -1566,6 +1567,12 @@ Specifies the first display number avail
X11 forwarding.
This prevents sshd from interfering with real X11 servers.
The default is 10.
+.It Cm X11MaxDisplays
+Specifies the maximum number of displays available for
+.Xr sshd 8 Ns 's
+X11 forwarding.
+This prevents sshd from exhausting local ports.
+The default is 1000.
.It Cm X11Forwarding
Specifies whether X11 forwarding is permitted.
The argument must be

98
SOURCES/openssh-7.4p1-systemd.patch Normal file
View File

@ -0,0 +1,98 @@
commit 0e22b79bfde45a7cf7a2e51a68ec11c4285f3b31
Author: Jakub Jelen <jjelen@redhat.com>
Date: Mon Nov 21 15:04:06 2016 +0100
systemd stuff
diff --git a/configure.ac b/configure.ac
index 2ffc369..162ce92 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4265,6 +4265,30 @@ AC_ARG_WITH([kerberos5],
AC_SUBST([GSSLIBS])
AC_SUBST([K5LIBS])
+# Check whether user wants systemd support
+SYSTEMD_MSG="no"
+AC_ARG_WITH(systemd,
+ [ --with-systemd Enable systemd support],
+ [ if test "x$withval" != "xno" ; then
+ AC_PATH_TOOL([PKGCONFIG], [pkg-config], [no])
+ if test "$PKGCONFIG" != "no"; then
+ AC_MSG_CHECKING([for libsystemd])
+ if $PKGCONFIG --exists libsystemd; then
+ SYSTEMD_CFLAGS=`$PKGCONFIG --cflags libsystemd`
+ SYSTEMD_LIBS=`$PKGCONFIG --libs libsystemd`
+ CPPFLAGS="$CPPFLAGS $SYSTEMD_CFLAGS"
+ SSHDLIBS="$SSHDLIBS $SYSTEMD_LIBS"
+ AC_MSG_RESULT([yes])
+ AC_DEFINE(HAVE_SYSTEMD, 1, [Define if you want systemd support.])
+ SYSTEMD_MSG="yes"
+ else
+ AC_MSG_RESULT([no])
+ fi
+ fi
+ fi ]
+)
+
+
# Looking for programs, paths and files
PRIVSEP_PATH=/var/empty
@@ -5097,6 +5121,7 @@ echo " libedit support: $LIBEDIT_MSG"
echo " Solaris process contract support: $SPC_MSG"
echo " Solaris project support: $SP_MSG"
echo " Solaris privilege support: $SPP_MSG"
+echo " systemd support: $SYSTEMD_MSG"
echo " IP address in \$DISPLAY hack: $DISPLAY_HACK_MSG"
echo " Translate v4 in v6 hack: $IPV4_IN6_HACK_MSG"
echo " BSD Auth support: $BSD_AUTH_MSG"
diff --git a/contrib/sshd.service b/contrib/sshd.service
new file mode 100644
index 0000000..e0d4923
--- /dev/null
+++ b/contrib/sshd.service
@@ -0,0 +1,16 @@
+[Unit]
+Description=OpenSSH server daemon
+Documentation=man:sshd(8) man:sshd_config(5)
+After=network.target
+
+[Service]
+Type=notify
+ExecStart=/usr/sbin/sshd -D $OPTIONS
+ExecReload=/bin/kill -HUP $MAINPID
+KillMode=process
+Restart=on-failure
+RestartPreventExitStatus=255
+
+[Install]
+WantedBy=multi-user.target
+
diff --git a/sshd.c b/sshd.c
index 816611c..b8b9d13 100644
--- a/sshd.c
+++ b/sshd.c
@@ -85,6 +85,10 @@
#include <prot.h>
#endif
+#ifdef HAVE_SYSTEMD
+#include <systemd/sd-daemon.h>
+#endif
+
#include "xmalloc.h"
#include "ssh.h"
#include "ssh2.h"
@@ -1888,6 +1892,11 @@ main(int ac, char **av)
}
}
+#ifdef HAVE_SYSTEMD
+ /* Signal systemd that we are ready to accept connections */
+ sd_notify(0, "READY=1");
+#endif
+
/* Accept a connection and return in a forked child */
server_accept_loop(&sock_in, &sock_out,
&newsock, config_s);

1377
SOURCES/openssh-7.5p1-gssapi-kex-with-ec.patch Normal file
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File diff suppressed because it is too large Load Diff

108
SOURCES/openssh-7.5p1-sandbox.patch Normal file
View File

@ -0,0 +1,108 @@
In order to use the OpenSSL-ibmpkcs11 engine it is needed to allow flock
and ipc calls, because this engine calls OpenCryptoki (a PKCS#11
implementation) which calls the libraries that will communicate with the
crypto cards. OpenCryptoki makes use of flock and ipc and, as of now,
this is only need on s390 architecture.
Signed-off-by: Eduardo Barretto <ebarretto@xxxxxxxxxxxxxxxxxx>
---
sandbox-seccomp-filter.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/sandbox-seccomp-filter.c b/sandbox-seccomp-filter.c
index ca75cc7..6e7de31 100644
--- a/sandbox-seccomp-filter.c
+++ b/sandbox-seccomp-filter.c
@@ -166,6 +166,9 @@ static const struct sock_filter preauth_insns[] = {
#ifdef __NR_exit_group
SC_ALLOW(__NR_exit_group),
#endif
+#if defined(__NR_flock) && defined(__s390__)
+ SC_ALLOW(__NR_flock),
+#endif
#ifdef __NR_geteuid
SC_ALLOW(__NR_geteuid),
#endif
@@ -178,6 +181,9 @@ static const struct sock_filter preauth_insns[] = {
#ifdef __NR_gettimeofday
SC_ALLOW(__NR_gettimeofday),
#endif
+#if defined(__NR_ipc) && defined(__s390__)
+ SC_ALLOW(__NR_ipc),
+#endif
#ifdef __NR_getuid
SC_ALLOW(__NR_getuid),
#endif
--
1.9.1
getuid and geteuid are needed when using an openssl engine that calls a
crypto card, e.g. ICA (libica).
Those syscalls are also needed by the distros for audit code.
Signed-off-by: Eduardo Barretto <ebarretto@xxxxxxxxxxxxxxxxxx>
---
sandbox-seccomp-filter.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/sandbox-seccomp-filter.c b/sandbox-seccomp-filter.c
index 6e7de31..e86aa2c 100644
--- a/sandbox-seccomp-filter.c
+++ b/sandbox-seccomp-filter.c
@@ -175,6 +175,18 @@ static const struct sock_filter preauth_insns[] = {
#ifdef __NR_getpid
SC_ALLOW(__NR_getpid),
#endif
+#ifdef __NR_getuid
+ SC_ALLOW(__NR_getuid),
+#endif
+#ifdef __NR_getuid32
+ SC_ALLOW(__NR_getuid32),
+#endif
+#ifdef __NR_geteuid
+ SC_ALLOW(__NR_geteuid),
+#endif
+#ifdef __NR_geteuid32
+ SC_ALLOW(__NR_geteuid32),
+#endif
#ifdef __NR_getrandom
SC_ALLOW(__NR_getrandom),
#endif
-- 1.9.1
The EP11 crypto card needs to make an ioctl call, which receives an
specific argument. This crypto card is for s390 only.
Signed-off-by: Eduardo Barretto <ebarretto@xxxxxxxxxxxxxxxxxx>
---
sandbox-seccomp-filter.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sandbox-seccomp-filter.c b/sandbox-seccomp-filter.c
index e86aa2c..98062f1 100644
--- a/sandbox-seccomp-filter.c
+++ b/sandbox-seccomp-filter.c
@@ -250,6 +250,8 @@ static const struct sock_filter preauth_insns[] = {
SC_ALLOW_ARG(__NR_ioctl, 1, Z90STAT_STATUS_MASK),
SC_ALLOW_ARG(__NR_ioctl, 1, ICARSAMODEXPO),
SC_ALLOW_ARG(__NR_ioctl, 1, ICARSACRT),
+ /* Allow ioctls for EP11 crypto card on s390 */
+ SC_ALLOW_ARG(__NR_ioctl, 1, ZSENDEP11CPRB),
#endif
#if defined(__x86_64__) && defined(__ILP32__) && defined(__X32_SYSCALL_BIT)
/*
--
1.9.1
diff -up openssh-7.6p1/sandbox-seccomp-filter.c.sandbox openssh-7.6p1/sandbox-seccomp-filter.c
--- openssh-7.6p1/sandbox-seccomp-filter.c.sandbox 2017-12-12 13:59:30.563874059 +0100
+++ openssh-7.6p1/sandbox-seccomp-filter.c 2017-12-12 13:59:14.842784083 +0100
@@ -190,6 +190,9 @@ static const struct sock_filter preauth_
#ifdef __NR_geteuid32
SC_ALLOW(__NR_geteuid32),
#endif
+#ifdef __NR_gettid
+ SC_ALLOW(__NR_gettid),
+#endif
#ifdef __NR_getrandom
SC_ALLOW(__NR_getrandom),
#endif

2172
SOURCES/openssh-7.6p1-audit.patch Normal file
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File diff suppressed because it is too large Load Diff

253
SOURCES/openssh-7.6p1-cleanup-selinux.patch Normal file
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@ -0,0 +1,253 @@
diff -up openssh/auth2-pubkey.c.refactor openssh/auth2-pubkey.c
--- openssh/auth2-pubkey.c.refactor 2017-09-27 13:10:19.556830609 +0200
+++ openssh/auth2-pubkey.c 2017-09-27 13:10:19.677831274 +0200
@@ -72,6 +72,9 @@
extern ServerOptions options;
extern u_char *session_id2;
extern u_int session_id2_len;
+extern int inetd_flag;
+extern int rexeced_flag;
+extern Authctxt *the_authctxt;
static char *
format_key(const struct sshkey *key)
@@ -432,7 +435,8 @@ match_principals_command(struct passwd *
if ((pid = subprocess("AuthorizedPrincipalsCommand", runas_pw, command,
ac, av, &f,
- SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD)) == 0)
+ SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD,
+ (inetd_flag && !rexeced_flag), the_authctxt)) == 0)
goto out;
uid_swapped = 1;
@@ -762,7 +766,8 @@ user_key_command_allowed2(struct passwd
if ((pid = subprocess("AuthorizedKeysCommand", runas_pw, command,
ac, av, &f,
- SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD)) == 0)
+ SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD,
+ (inetd_flag && !rexeced_flag), the_authctxt)) == 0)
goto out;
uid_swapped = 1;
diff -up openssh/auth.c.refactor openssh/auth.c
--- openssh/auth.c.refactor 2017-09-27 13:10:19.640831071 +0200
+++ openssh/auth.c 2017-09-27 13:10:19.678831279 +0200
@@ -1435,7 +1435,8 @@ argv_assemble(int argc, char **argv)
*/
pid_t
subprocess(const char *tag, struct passwd *pw, const char *command,
- int ac, char **av, FILE **child, u_int flags)
+ int ac, char **av, FILE **child, u_int flags, int inetd,
+ void *the_authctxt)
{
FILE *f = NULL;
struct stat st;
@@ -1551,7 +1552,7 @@ subprocess(const char *tag, struct passw
}
#ifdef WITH_SELINUX
- if (sshd_selinux_setup_env_variables() < 0) {
+ if (sshd_selinux_setup_env_variables(inetd, the_authctxt) < 0) {
error ("failed to copy environment: %s",
strerror(errno));
_exit(127);
diff -up openssh/auth.h.refactor openssh/auth.h
--- openssh/auth.h.refactor 2017-09-25 01:48:10.000000000 +0200
+++ openssh/auth.h 2017-09-27 13:10:19.678831279 +0200
@@ -144,7 +144,7 @@ int exited_cleanly(pid_t, const char *,
#define SSH_SUBPROCESS_STDOUT_CAPTURE (1<<1) /* Redirect stdout */
#define SSH_SUBPROCESS_STDERR_DISCARD (1<<2) /* Discard stderr */
pid_t subprocess(const char *, struct passwd *,
- const char *, int, char **, FILE **, u_int flags);
+ const char *, int, char **, FILE **, u_int flags, int, void *);
int sys_auth_passwd(struct ssh *, const char *);
diff -up openssh/openbsd-compat/port-linux.h.refactor openssh/openbsd-compat/port-linux.h
--- openssh/openbsd-compat/port-linux.h.refactor 2017-09-27 13:10:19.634831038 +0200
+++ openssh/openbsd-compat/port-linux.h 2017-09-27 13:10:54.954025248 +0200
@@ -26,8 +26,8 @@ void ssh_selinux_setfscreatecon(const ch
int sshd_selinux_enabled(void);
void sshd_selinux_copy_context(void);
-void sshd_selinux_setup_exec_context(char *);
-int sshd_selinux_setup_env_variables(void);
+void sshd_selinux_setup_exec_context(char *, int, int(char *, const char *), void *, int);
+int sshd_selinux_setup_env_variables(int inetd, void *);
void sshd_selinux_change_privsep_preauth_context(void);
#endif
diff -up openssh/openbsd-compat/port-linux-sshd.c.refactor openssh/openbsd-compat/port-linux-sshd.c
--- openssh/openbsd-compat/port-linux-sshd.c.refactor 2017-09-27 13:10:19.634831038 +0200
+++ openssh/openbsd-compat/port-linux-sshd.c 2017-09-27 13:12:06.811420371 +0200
@@ -48,11 +48,6 @@
#include <unistd.h>
#endif
-extern ServerOptions options;
-extern Authctxt *the_authctxt;
-extern int inetd_flag;
-extern int rexeced_flag;
-
/* Wrapper around is_selinux_enabled() to log its return value once only */
int
sshd_selinux_enabled(void)
@@ -222,7 +217,8 @@ get_user_context(const char *sename, con
}
static void
-ssh_selinux_get_role_level(char **role, const char **level)
+ssh_selinux_get_role_level(char **role, const char **level,
+ Authctxt *the_authctxt)
{
*role = NULL;
*level = NULL;
@@ -240,8 +236,8 @@ ssh_selinux_get_role_level(char **role,
/* Return the default security context for the given username */
static int
-sshd_selinux_getctxbyname(char *pwname,
- security_context_t *default_sc, security_context_t *user_sc)
+sshd_selinux_getctxbyname(char *pwname, security_context_t *default_sc,
+ security_context_t *user_sc, int inetd, Authctxt *the_authctxt)
{
char *sename, *lvl;
char *role;
@@ -249,7 +245,7 @@ sshd_selinux_getctxbyname(char *pwname,
int r = 0;
context_t con = NULL;
- ssh_selinux_get_role_level(&role, &reqlvl);
+ ssh_selinux_get_role_level(&role, &reqlvl, the_authctxt);
#ifdef HAVE_GETSEUSERBYNAME
if ((r=getseuserbyname(pwname, &sename, &lvl)) != 0) {
@@ -271,7 +267,7 @@ sshd_selinux_getctxbyname(char *pwname,
if (r == 0) {
/* If launched from xinetd, we must use current level */
- if (inetd_flag && !rexeced_flag) {
+ if (inetd) {
security_context_t sshdsc=NULL;
if (getcon_raw(&sshdsc) < 0)
@@ -332,7 +328,8 @@ sshd_selinux_getctxbyname(char *pwname,
/* Setup environment variables for pam_selinux */
static int
-sshd_selinux_setup_variables(int(*set_it)(char *, const char *))
+sshd_selinux_setup_variables(int(*set_it)(char *, const char *), int inetd,
+ Authctxt *the_authctxt)
{
const char *reqlvl;
char *role;
@@ -341,11 +338,11 @@ sshd_selinux_setup_variables(int(*set_it
debug3("%s: setting execution context", __func__);
- ssh_selinux_get_role_level(&role, &reqlvl);
+ ssh_selinux_get_role_level(&role, &reqlvl, the_authctxt);
rv = set_it("SELINUX_ROLE_REQUESTED", role ? role : "");
- if (inetd_flag && !rexeced_flag) {
+ if (inetd) {
use_current = "1";
} else {
use_current = "";
@@ -361,9 +358,10 @@ sshd_selinux_setup_variables(int(*set_it
}
static int
-sshd_selinux_setup_pam_variables(void)
+sshd_selinux_setup_pam_variables(int inetd,
+ int(pam_setenv)(char *, const char *), Authctxt *the_authctxt)
{
- return sshd_selinux_setup_variables(do_pam_putenv);
+ return sshd_selinux_setup_variables(pam_setenv, inetd, the_authctxt);
}
static int
@@ -373,25 +371,28 @@ do_setenv(char *name, const char *value)
}
int
-sshd_selinux_setup_env_variables(void)
+sshd_selinux_setup_env_variables(int inetd, void *the_authctxt)
{
- return sshd_selinux_setup_variables(do_setenv);
+ Authctxt *authctxt = (Authctxt *) the_authctxt;
+ return sshd_selinux_setup_variables(do_setenv, inetd, authctxt);
}
/* Set the execution context to the default for the specified user */
void
-sshd_selinux_setup_exec_context(char *pwname)
+sshd_selinux_setup_exec_context(char *pwname, int inetd,
+ int(pam_setenv)(char *, const char *), void *the_authctxt, int use_pam)
{
security_context_t user_ctx = NULL;
int r = 0;
security_context_t default_ctx = NULL;
+ Authctxt *authctxt = (Authctxt *) the_authctxt;
if (!sshd_selinux_enabled())
return;
- if (options.use_pam) {
+ if (use_pam) {
/* do not compute context, just setup environment for pam_selinux */
- if (sshd_selinux_setup_pam_variables()) {
+ if (sshd_selinux_setup_pam_variables(inetd, pam_setenv, authctxt)) {
switch (security_getenforce()) {
case -1:
fatal("%s: security_getenforce() failed", __func__);
@@ -409,7 +410,7 @@ sshd_selinux_setup_exec_context(char *pw
debug3("%s: setting execution context", __func__);
- r = sshd_selinux_getctxbyname(pwname, &default_ctx, &user_ctx);
+ r = sshd_selinux_getctxbyname(pwname, &default_ctx, &user_ctx, inetd, authctxt);
if (r >= 0) {
r = setexeccon(user_ctx);
if (r < 0) {
diff -up openssh/platform.c.refactor openssh/platform.c
--- openssh/platform.c.refactor 2017-09-27 13:10:19.574830708 +0200
+++ openssh/platform.c 2017-09-27 13:11:45.475303050 +0200
@@ -33,6 +33,9 @@
extern int use_privsep;
extern ServerOptions options;
+extern int inetd_flag;
+extern int rexeced_flag;
+extern Authctxt *the_authctxt;
void
platform_pre_listen(void)
@@ -184,7 +187,9 @@ platform_setusercontext_post_groups(stru
}
#endif /* HAVE_SETPCRED */
#ifdef WITH_SELINUX
- sshd_selinux_setup_exec_context(pw->pw_name);
+ sshd_selinux_setup_exec_context(pw->pw_name,
+ (inetd_flag && !rexeced_flag), do_pam_putenv, the_authctxt,
+ options.use_pam);
#endif
}
diff -up openssh/sshd.c.refactor openssh/sshd.c
--- openssh/sshd.c.refactor 2017-09-27 13:10:19.674831257 +0200
+++ openssh/sshd.c 2017-09-27 13:12:01.635391909 +0200
@@ -2135,7 +2135,9 @@ main(int ac, char **av)
}
#endif
#ifdef WITH_SELINUX
- sshd_selinux_setup_exec_context(authctxt->pw->pw_name);
+ sshd_selinux_setup_exec_context(authctxt->pw->pw_name,
+ (inetd_flag && !rexeced_flag), do_pam_putenv, the_authctxt,
+ options.use_pam);
#endif
#ifdef USE_PAM
if (options.use_pam) {

801
SOURCES/openssh-7.6p1-pkcs11-ecdsa.patch Normal file
View File

@ -0,0 +1,801 @@
diff -up openssh-7.6p1/ssh-pkcs11-client.c.pkcs11-ecdsa openssh-7.6p1/ssh-pkcs11-client.c
--- openssh-7.6p1/ssh-pkcs11-client.c.pkcs11-ecdsa 2018-02-16 13:25:59.426469253 +0100
+++ openssh-7.6p1/ssh-pkcs11-client.c 2018-02-16 13:25:59.428469265 +0100
@@ -31,6 +31,15 @@
#include <errno.h>
#include <openssl/rsa.h>
+#ifdef OPENSSL_HAS_ECC
+#include <openssl/ecdsa.h>
+#if ((defined(LIBRESSL_VERSION_NUMBER) && \
+ (LIBRESSL_VERSION_NUMBER >= 0x20010002L))) || \
+ (defined(ECDSA_F_ECDSA_METHOD_NEW)) || \
+ (OPENSSL_VERSION_NUMBER >= 0x00010100L)
+#define ENABLE_PKCS11_ECDSA 1
+#endif
+#endif
#include "pathnames.h"
#include "xmalloc.h"
@@ -139,9 +147,9 @@ pkcs11_rsa_private_encrypt(int flen, con
return (ret);
}
-/* redirect the private key encrypt operation to the ssh-pkcs11-helper */
+/* redirect the RSA private key encrypt operation to the ssh-pkcs11-helper */
static int
-wrap_key(RSA *rsa)
+wrap_rsa_key(RSA *rsa)
{
static RSA_METHOD helper_rsa;
@@ -152,6 +160,88 @@ wrap_key(RSA *rsa)
return (0);
}
+#ifdef ENABLE_PKCS11_ECDSA
+static ECDSA_SIG *
+pkcs11_ecdsa_private_sign(const unsigned char *from, int flen,
+ const BIGNUM *inv, const BIGNUM *rp, EC_KEY * ecdsa)
+{
+ struct sshkey *key = NULL;
+ u_char *blob, *signature = NULL;
+ size_t blen, slen = 0;
+ struct sshbuf *msg = NULL;
+ ECDSA_SIG *ret = NULL;
+ BIGNUM *r = NULL, *s = NULL;
+ int rv;
+
+ if ((key = sshkey_new(KEY_ECDSA)) == NULL)
+ fatal("%s: sshkey_new failed", __func__);
+ key->ecdsa = ecdsa;
+ key->ecdsa_nid = sshkey_ecdsa_key_to_nid(ecdsa);
+ if (sshkey_to_blob(key, &blob, &blen) == 0)
+ goto out;
+ if ((msg = sshbuf_new()) == NULL)
+ fatal("%s: sshbuf_new failed", __func__);
+ if ((rv = sshbuf_put_u8(msg, SSH2_AGENTC_SIGN_REQUEST)) != 0 ||
+ (rv = sshbuf_put_string(msg, blob, blen)) != 0 ||
+ (rv = sshbuf_put_string(msg, from, flen)) != 0 ||
+ (rv = sshbuf_put_u32(msg, 0)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(rv));
+ free(blob);
+ send_msg(msg);
+ sshbuf_reset(msg);
+
+ if (recv_msg(msg) == SSH2_AGENT_SIGN_RESPONSE) {
+ if ((rv = sshbuf_get_string(msg, &signature, &slen)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(rv));
+ if (slen <= (size_t)ECDSA_size(ecdsa)) {
+ int nlen = slen / 2;
+ ret = ECDSA_SIG_new();
+ r = BN_new();
+ s = BN_new();
+ BN_bin2bn(&signature[0], nlen, r);
+ BN_bin2bn(&signature[nlen], nlen, s);
+ ECDSA_SIG_set0(ret, r, s);
+ }
+ free(signature);
+ }
+out:
+ sshkey_free(key);
+ sshbuf_free(msg);
+ return (ret);
+}
+
+/* redirect the ECDSA private key encrypt operation to the ssh-pkcs11-helper */
+static int
+wrap_ecdsa_key(EC_KEY *ecdsa) {
+#if (OPENSSL_VERSION_NUMBER >= 0x00010100L)
+ static EC_KEY_METHOD *helper_ecdsa = NULL;
+ if (helper_ecdsa == NULL) {
+ const EC_KEY_METHOD *def = EC_KEY_get_default_method();
+ helper_ecdsa = EC_KEY_METHOD_new(def);
+ EC_KEY_METHOD_set_sign(helper_ecdsa, NULL, NULL, pkcs11_ecdsa_private_sign);
+ }
+ EC_KEY_set_method(ecdsa, helper_ecdsa);
+#else
+ static ECDSA_METHOD *helper_ecdsa = NULL;
+ if(helper_ecdsa == NULL) {
+ const ECDSA_METHOD *def = ECDSA_get_default_method();
+# ifdef ECDSA_F_ECDSA_METHOD_NEW
+ helper_ecdsa = ECDSA_METHOD_new((ECDSA_METHOD *)def);
+ ECDSA_METHOD_set_name(helper_ecdsa, "ssh-pkcs11-helper-ecdsa");
+ ECDSA_METHOD_set_sign(helper_ecdsa, pkcs11_ecdsa_private_sign);
+# else
+ helper_ecdsa = xcalloc(1, sizeof(*helper_ecdsa));
+ memcpy(helper_ecdsa, def, sizeof(*helper_ecdsa));
+ helper_ecdsa->name = "ssh-pkcs11-helper-ecdsa";
+ helper_ecdsa->ecdsa_do_sign = pkcs11_ecdsa_private_sign;
+# endif
+ }
+ ECDSA_set_method(ecdsa, helper_ecdsa);
+#endif
+ return (0);
+}
+#endif
+
static int
pkcs11_start_helper(void)
{
@@ -212,7 +281,15 @@ pkcs11_add_provider(char *name, char *pi
__func__, ssh_err(r));
if ((r = sshkey_from_blob(blob, blen, &k)) != 0)
fatal("%s: bad key: %s", __func__, ssh_err(r));
- wrap_key(k->rsa);
+ if(k->type == KEY_RSA) {
+ wrap_rsa_key(k->rsa);
+#ifdef ENABLE_PKCS11_ECDSA
+ } else if(k->type == KEY_ECDSA) {
+ wrap_ecdsa_key(k->ecdsa);
+#endif /* ENABLE_PKCS11_ECDSA */
+ } else {
+ /* Unsupported type */
+ }
(*keysp)[i] = k;
free(blob);
}
diff -up openssh-7.6p1/ssh-pkcs11.c.pkcs11-ecdsa openssh-7.6p1/ssh-pkcs11.c
--- openssh-7.6p1/ssh-pkcs11.c.pkcs11-ecdsa 2018-02-16 13:25:59.427469259 +0100
+++ openssh-7.6p1/ssh-pkcs11.c 2018-02-16 13:44:51.270554797 +0100
@@ -32,6 +32,16 @@
#include "openbsd-compat/sys-queue.h"
#include <openssl/x509.h>
+#include <openssl/rsa.h>
+#ifdef OPENSSL_HAS_ECC
+#include <openssl/ecdsa.h>
+#if ((defined(LIBRESSL_VERSION_NUMBER) && \
+ (LIBRESSL_VERSION_NUMBER >= 0x20010002L))) || \
+ (defined(ECDSA_F_ECDSA_METHOD_NEW)) || \
+ (OPENSSL_VERSION_NUMBER >= 0x00010100L)
+#define ENABLE_PKCS11_ECDSA 1
+#endif
+#endif
#define CRYPTOKI_COMPAT
#include "pkcs11.h"
@@ -67,6 +76,7 @@ TAILQ_HEAD(, pkcs11_provider) pkcs11_pro
struct pkcs11_key {
struct pkcs11_provider *provider;
CK_ULONG slotidx;
+ CK_ULONG key_type;
int (*orig_finish)(RSA *rsa);
RSA_METHOD rsa_method;
char *keyid;
@@ -75,6 +85,9 @@ struct pkcs11_key {
};
int pkcs11_interactive = 0;
+#ifdef ENABLE_PKCS11_ECDSA
+static int pkcs11_key_idx = -1;
+#endif /* ENABLE_PKCS11_ECDSA */
/*
* This can't be in the ssh-pkcs11-uri, becase we can not depend on
@@ -289,6 +302,40 @@ pkcs11_find(struct pkcs11_provider *p, C
return (ret);
}
+int pkcs11_login(struct pkcs11_key *k11, CK_FUNCTION_LIST *f, struct pkcs11_slotinfo *si) {
+ char *pin = NULL, prompt[1024];
+ CK_RV rv;
+ if ((si->token.flags & CKF_LOGIN_REQUIRED) && !si->logged_in) {
+ if (!pkcs11_interactive) {
+ error("need pin entry%s", (si->token.flags &
+ CKF_PROTECTED_AUTHENTICATION_PATH) ?
+ " on reader keypad" : "");
+ return (-1);
+ }
+ if (si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH)
+ verbose("Deferring PIN entry to reader keypad.");
+ else {
+ snprintf(prompt, sizeof(prompt),
+ "Enter PIN for '%s': ", si->token.label);
+ pin = read_passphrase(prompt, RP_ALLOW_EOF);
+ if (pin == NULL)
+ return (-1); /* bail out */
+ }
+ rv = f->C_Login(si->session, CKU_USER, (u_char *)pin,
+ (pin != NULL) ? strlen(pin) : 0);
+ if (pin != NULL) {
+ explicit_bzero(pin, strlen(pin));
+ free(pin);
+ }
+ if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) {
+ error("C_Login failed: %lu", rv);
+ return (-1);
+ }
+ si->logged_in = 1;
+ }
+ return 0;
+}
+
/* openssl callback doing the actual signing operation */
static int
pkcs11_rsa_private_encrypt(int flen, const u_char *from, u_char *to, RSA *rsa,
@@ -310,7 +357,6 @@ pkcs11_rsa_private_encrypt(int flen, con
{CKA_ID, NULL, 0},
{CKA_SIGN, NULL, sizeof(true_val) }
};
- char *pin = NULL, prompt[1024];
int rval = -1;
key_filter[0].pValue = &private_key_class;
@@ -326,33 +372,8 @@ pkcs11_rsa_private_encrypt(int flen, con
}
f = k11->provider->module->function_list;
si = &k11->provider->module->slotinfo[k11->slotidx];
- if ((si->token.flags & CKF_LOGIN_REQUIRED) && !si->logged_in) {
- if (!pkcs11_interactive) {
- error("need pin entry%s", (si->token.flags &
- CKF_PROTECTED_AUTHENTICATION_PATH) ?
- " on reader keypad" : "");
- return (-1);
- }
- if (si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH)
- verbose("Deferring PIN entry to reader keypad.");
- else {
- snprintf(prompt, sizeof(prompt),
- "Enter PIN for '%s': ", si->token.label);
- pin = read_passphrase(prompt, RP_ALLOW_EOF);
- if (pin == NULL)
- return (-1); /* bail out */
- }
- rv = f->C_Login(si->session, CKU_USER, (u_char *)pin,
- (pin != NULL) ? strlen(pin) : 0);
- if (pin != NULL) {
- explicit_bzero(pin, strlen(pin));
- free(pin);
- }
- if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) {
- error("C_Login failed: %lu", rv);
- return (-1);
- }
- si->logged_in = 1;
+ if(pkcs11_login(k11, f, si)) {
+ return (-1);
}
key_filter[1].pValue = k11->keyid;
key_filter[1].ulValueLen = k11->keyid_len;
@@ -390,6 +411,7 @@ pkcs11_rsa_wrap(struct pkcs11_provider *
const RSA_METHOD *def = RSA_get_default_method();
k11 = xcalloc(1, sizeof(*k11));
+ k11->key_type = CKK_RSA;
k11->provider = provider;
provider->refcount++; /* provider referenced by RSA key */
k11->slotidx = slotidx;
@@ -415,6 +437,184 @@ pkcs11_rsa_wrap(struct pkcs11_provider *
return (0);
}
+#ifdef ENABLE_PKCS11_ECDSA
+static ECDSA_SIG *pkcs11_ecdsa_sign(const unsigned char *dgst, int dgst_len,
+ const BIGNUM *inv, const BIGNUM *rp,
+ EC_KEY *ecdsa) {
+ struct pkcs11_key *k11;
+ struct pkcs11_slotinfo *si;
+ CK_FUNCTION_LIST *f;
+ CK_OBJECT_HANDLE obj;
+ CK_ULONG tlen = 0;
+ CK_RV rv;
+ CK_OBJECT_CLASS private_key_class = CKO_PRIVATE_KEY;
+ CK_BBOOL true_val = CK_TRUE;
+ CK_MECHANISM mech = {
+ CKM_ECDSA, NULL_PTR, 0
+ };
+ CK_ATTRIBUTE key_filter[] = {
+ {CKA_CLASS, NULL, sizeof(private_key_class) },
+ {CKA_ID, NULL, 0},
+ {CKA_SIGN, NULL, sizeof(true_val) }
+ };
+ ECDSA_SIG *rval = NULL;
+ key_filter[0].pValue = &private_key_class;
+ key_filter[2].pValue = &true_val;
+
+ #if (OPENSSL_VERSION_NUMBER >= 0x00010100L)
+ if ((k11 = (struct pkcs11_key *)EC_KEY_get_ex_data(ecdsa, pkcs11_key_idx)) == NULL) {
+ error("EC_KEY_get_ex_data failed for ecdsa %p", ecdsa);
+ #else
+ if ((k11 = (struct pkcs11_key *)ECDSA_get_ex_data(ecdsa, pkcs11_key_idx)) == NULL) {
+ error("ECDSA_get_ex_data failed for ecdsa %p", ecdsa);
+ #endif
+ return NULL;
+ }
+ if (!k11->provider || !k11->provider->valid) {
+ error("no pkcs11 (valid) provider for ecdsa %p", ecdsa);
+ return NULL;
+ }
+ f = k11->provider->module->function_list;
+ si = &k11->provider->module->slotinfo[k11->slotidx];
+ if(pkcs11_login(k11, f, si)) {
+ return NULL;
+ }
+ key_filter[1].pValue = k11->keyid;
+ key_filter[1].ulValueLen = k11->keyid_len;
+ /* try to find object w/CKA_SIGN first, retry w/o */
+ if (pkcs11_find(k11->provider, k11->slotidx, key_filter, 3, &obj) < 0 &&
+ pkcs11_find(k11->provider, k11->slotidx, key_filter, 2, &obj) < 0) {
+ error("cannot find private key");
+ } else if ((rv = f->C_SignInit(si->session, &mech, obj)) != CKR_OK) {
+ error("C_SignInit failed: %lu", rv);
+ } else {
+ CK_BYTE_PTR buf = NULL;
+ BIGNUM *r = NULL, *s = NULL;
+ int nlen;
+ /* Make a call to C_Sign to find out the size of the signature */
+ rv = f->C_Sign(si->session, (CK_BYTE *)dgst, dgst_len, NULL, &tlen);
+ if (rv != CKR_OK) {
+ error("C_Sign failed: %lu", rv);
+ return NULL;
+ }
+ if ((buf = xmalloc(tlen)) == NULL) {
+ error("failure to allocate signature buffer");
+ return NULL;
+ }
+ rv = f->C_Sign(si->session, (CK_BYTE *)dgst, dgst_len, buf, &tlen);
+ if (rv != CKR_OK) {
+ error("C_Sign failed: %lu", rv);
+ }
+
+ if ((rval = ECDSA_SIG_new()) == NULL ||
+ (r = BN_new()) == NULL ||
+ (s = BN_new()) == NULL) {
+ error("failure to allocate ECDSA signature");
+ } else {
+ /*
+ * ECDSA signature is 2 large integers of same size returned
+ * concatenated by PKCS#11, we separate them to create an
+ * ECDSA_SIG for OpenSSL.
+ */
+ nlen = tlen / 2;
+ BN_bin2bn(&buf[0], nlen, r);
+ BN_bin2bn(&buf[nlen], nlen, s);
+ ECDSA_SIG_set0(rval, r, s);
+ }
+ free(buf);
+ }
+ return (rval);
+}
+
+#if (OPENSSL_VERSION_NUMBER >= 0x00010100L)
+static EC_KEY_METHOD *get_pkcs11_ecdsa_method(void) {
+ static EC_KEY_METHOD *pkcs11_ecdsa_method = NULL;
+ if(pkcs11_key_idx == -1) {
+ pkcs11_key_idx = EC_KEY_get_ex_new_index(0, NULL, NULL, NULL, 0);
+ }
+ if (pkcs11_ecdsa_method == NULL) {
+ const EC_KEY_METHOD *def = EC_KEY_get_default_method();
+ pkcs11_ecdsa_method = EC_KEY_METHOD_new(def);
+ EC_KEY_METHOD_set_sign(pkcs11_ecdsa_method, NULL, NULL, pkcs11_ecdsa_sign);
+ }
+#else
+static ECDSA_METHOD *get_pkcs11_ecdsa_method(void) {
+ static ECDSA_METHOD *pkcs11_ecdsa_method = NULL;
+ if(pkcs11_key_idx == -1) {
+ pkcs11_key_idx = ECDSA_get_ex_new_index(0, NULL, NULL, NULL, 0);
+ }
+ if(pkcs11_ecdsa_method == NULL) {
+ const ECDSA_METHOD *def = ECDSA_get_default_method();
+ #ifdef ECDSA_F_ECDSA_METHOD_NEW
+ pkcs11_ecdsa_method = ECDSA_METHOD_new((ECDSA_METHOD *)def);
+ ECDSA_METHOD_set_name(pkcs11_ecdsa_method, "pkcs11");
+ ECDSA_METHOD_set_sign(pkcs11_ecdsa_method, pkcs11_ecdsa_sign);
+ #else
+ pkcs11_ecdsa_method = xcalloc(1, sizeof(*pkcs11_ecdsa_method));
+ memcpy(pkcs11_ecdsa_method, def, sizeof(*pkcs11_ecdsa_method));
+ pkcs11_ecdsa_method->name = "pkcs11";
+ pkcs11_ecdsa_method->ecdsa_do_sign = pkcs11_ecdsa_sign;
+ #endif
+ }
+#endif
+ return pkcs11_ecdsa_method;
+}
+
+static int
+pkcs11_ecdsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx,
+ CK_ATTRIBUTE *keyid_attrib, CK_ATTRIBUTE *label_attrib, EC_KEY *ecdsa)
+{
+ struct pkcs11_key *k11;
+ k11 = xcalloc(1, sizeof(*k11));
+ k11->key_type = CKK_EC;
+ k11->provider = provider;
+ provider->refcount++; /* provider referenced by ECDSA key */
+ k11->slotidx = slotidx;
+ /* identify key object on smartcard */
+ k11->keyid_len = keyid_attrib->ulValueLen;
+ if (k11->keyid_len > 0) {
+ k11->keyid = xmalloc(k11->keyid_len);
+ memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len);
+ }
+ if (label_attrib->ulValueLen > 0 ) {
+ k11->label = xmalloc(label_attrib->ulValueLen+1);
+ memcpy(k11->label, label_attrib->pValue, label_attrib->ulValueLen);
+ k11->label[label_attrib->ulValueLen] = 0;
+ }
+ #if (OPENSSL_VERSION_NUMBER >= 0x00010100L)
+ EC_KEY_set_method(ecdsa, get_pkcs11_ecdsa_method());
+ EC_KEY_set_ex_data(ecdsa, pkcs11_key_idx, k11);
+ #else
+ ECDSA_set_method(ecdsa, get_pkcs11_ecdsa_method());
+ ECDSA_set_ex_data(ecdsa, pkcs11_key_idx, k11);
+ #endif
+ return (0);
+}
+#endif /* ENABLE_PKCS11_ECDSA */
+
+int pkcs11_del_key(struct sshkey *key) {
+#ifdef ENABLE_PKCS11_ECDSA
+ if(key->type == KEY_ECDSA) {
+ struct pkcs11_key *k11 = (struct pkcs11_key *)
+ #if (OPENSSL_VERSION_NUMBER >= 0x00010100L)
+ EC_KEY_get_ex_data(key->ecdsa, pkcs11_key_idx);
+ #else
+ ECDSA_get_ex_data(key->ecdsa, pkcs11_key_idx);
+ #endif
+ if (k11 == NULL) {
+ error("EC_KEY_get_ex_data failed for ecdsa %p", key->ecdsa);
+ } else {
+ if (k11->provider)
+ pkcs11_provider_unref(k11->provider);
+ free(k11->keyid);
+ free(k11);
+ }
+ }
+#endif /* ENABLE_PKCS11_ECDSA */
+ sshkey_free(key);
+ return (0);
+}
+
/* remove trailing spaces */
static void
rmspace(u_char *buf, size_t len)
@@ -482,11 +646,13 @@ static int
pkcs11_fetch_keys(struct pkcs11_provider *p, CK_ULONG slotidx,
struct sshkey ***keysp, int *nkeys, struct pkcs11_uri *uri)
{
- size_t filter_size = 1;
+ size_t filter_size = 2;
+ CK_KEY_TYPE pubkey_type = CKK_RSA;
CK_OBJECT_CLASS pubkey_class = CKO_PUBLIC_KEY;
CK_OBJECT_CLASS cert_class = CKO_CERTIFICATE;
CK_ATTRIBUTE pubkey_filter[] = {
{ CKA_CLASS, NULL, sizeof(pubkey_class) },
+ { CKA_KEY_TYPE, NULL, sizeof(pubkey_type) },
{ CKA_ID, NULL, 0 },
{ CKA_LABEL, NULL, 0 }
};
@@ -507,29 +673,60 @@ pkcs11_fetch_keys(struct pkcs11_provider
{ CKA_SUBJECT, NULL, 0 },
{ CKA_VALUE, NULL, 0 }
};
+#ifdef ENABLE_PKCS11_ECDSA
+ CK_KEY_TYPE ecdsa_type = CKK_EC;
+ CK_ATTRIBUTE ecdsa_filter[] = {
+ { CKA_CLASS, NULL, sizeof(pubkey_class) },
+ { CKA_KEY_TYPE, NULL, sizeof(ecdsa_type) },
+ { CKA_ID, NULL, 0 },
+ { CKA_LABEL, NULL, 0 }
+ };
+ CK_ATTRIBUTE ecdsa_attribs[] = {
+ { CKA_ID, NULL, 0 },
+ { CKA_LABEL, NULL, 0 },
+ { CKA_EC_PARAMS, NULL, 0 },
+ { CKA_EC_POINT, NULL, 0 }
+ };
+ ecdsa_filter[0].pValue = &pubkey_class;
+ ecdsa_filter[1].pValue = &ecdsa_type;
+#endif /* ENABLE_PKCS11_ECDSA */
pubkey_filter[0].pValue = &pubkey_class;
+ pubkey_filter[1].pValue = &pubkey_type;
cert_filter[0].pValue = &cert_class;
if (uri->id != NULL) {
pubkey_filter[filter_size].pValue = uri->id;
pubkey_filter[filter_size].ulValueLen = uri->id_len;
- cert_filter[filter_size].pValue = uri->id;
- cert_filter[filter_size].ulValueLen = uri->id_len;
+#ifdef ENABLE_PKCS11_ECDSA
+ ecdsa_filter[filter_size].pValue = uri->id;
+ ecdsa_filter[filter_size].ulValueLen = uri->id_len;
+#endif /* ENABLE_PKCS11_ECDSA */
+ cert_filter[filter_size-1].pValue = uri->id;
+ cert_filter[filter_size-1].ulValueLen = uri->id_len;
filter_size++;
}
if (uri->object != NULL) {
pubkey_filter[filter_size].pValue = uri->object;
pubkey_filter[filter_size].ulValueLen = strlen(uri->object);
pubkey_filter[filter_size].type = CKA_LABEL;
- cert_filter[filter_size].pValue = uri->object;
- cert_filter[filter_size].ulValueLen = strlen(uri->object);
- cert_filter[filter_size].type = CKA_LABEL;
+#ifdef ENABLE_PKCS11_ECDSA
+ ecdsa_filter[filter_size].pValue = uri->object;
+ ecdsa_filter[filter_size].ulValueLen = strlen(uri->object);
+ ecdsa_filter[filter_size].type = CKA_LABEL;
+#endif /* ENABLE_PKCS11_ECDSA */
+ cert_filter[filter_size-1].pValue = uri->object;
+ cert_filter[filter_size-1].ulValueLen = strlen(uri->object);
+ cert_filter[filter_size-1].type = CKA_LABEL;
filter_size++;
}
if (pkcs11_fetch_keys_filter(p, slotidx, pubkey_filter, filter_size,
pubkey_attribs, keysp, nkeys) < 0 ||
- pkcs11_fetch_keys_filter(p, slotidx, cert_filter, filter_size,
+#ifdef ENABLE_PKCS11_ECDSA
+ pkcs11_fetch_keys_filter(p, slotidx, ecdsa_filter, filter_size,
+ ecdsa_attribs, keysp, nkeys) < 0||
+#endif /* ENABLE_PKCS11_ECDSA */
+ pkcs11_fetch_keys_filter(p, slotidx, cert_filter, filter_size - 1,
cert_attribs, keysp, nkeys) < 0)
return (-1);
return (0);
@@ -553,6 +746,11 @@ pkcs11_fetch_keys_filter(struct pkcs11_p
{
struct sshkey *key;
RSA *rsa;
+#ifdef ENABLE_PKCS11_ECDSA
+ EC_KEY *ecdsa;
+#else
+ void *ecdsa;
+#endif /* ENABLE_PKCS11_ECDSA */
X509 *x509;
EVP_PKEY *evp = NULL;
int i;
@@ -608,6 +806,9 @@ pkcs11_fetch_keys_filter(struct pkcs11_p
* or ID, label, subject and value for certificates.
*/
rsa = NULL;
+#ifdef ENABLE_PKCS11_ECDSA
+ ecdsa = NULL;
+#endif /* ENABLE_PKCS11_ECDSA */
if ((rv = f->C_GetAttributeValue(session, obj, attribs, nattribs))
!= CKR_OK) {
error("C_GetAttributeValue failed: %lu", rv);
@@ -620,6 +821,45 @@ pkcs11_fetch_keys_filter(struct pkcs11_p
rsa->e = BN_bin2bn(attribs[3].pValue,
attribs[3].ulValueLen, NULL);
}
+#ifdef ENABLE_PKCS11_ECDSA
+ } else if (attribs[2].type == CKA_EC_PARAMS ) {
+ if ((ecdsa = EC_KEY_new()) == NULL) {
+ error("EC_KEY_new failed");
+ } else {
+ const unsigned char *ptr1 = attribs[2].pValue;
+ const unsigned char *ptr2 = attribs[3].pValue;
+ CK_ULONG len1 = attribs[2].ulValueLen;
+ CK_ULONG len2 = attribs[3].ulValueLen;
+ ASN1_OCTET_STRING *point = NULL;
+
+ /*
+ * CKA_EC_PARAMS contains the curve parameters of the key
+ * either referenced as an OID or directly with all values.
+ * CKA_EC_POINT contains the point (public key) on the curve.
+ * The point is should be returned inside a DER-encoded
+ * ASN.1 OCTET STRING value (but some implementation).
+ */
+ if ((point = d2i_ASN1_OCTET_STRING(NULL, &ptr2, len2))) {
+ /* Pointing to OCTET STRING content */
+ ptr2 = point->data;
+ len2 = point->length;
+ } else {
+ /* No OCTET STRING */
+ ptr2 = attribs[3].pValue;
+ }
+
+ if((d2i_ECParameters(&ecdsa, &ptr1, len1) == NULL) ||
+ (o2i_ECPublicKey(&ecdsa, &ptr2, len2) == NULL)) {
+ EC_KEY_free(ecdsa);
+ ecdsa = NULL;
+ error("EC public key parsing failed");
+ }
+
+ if(point) {
+ ASN1_OCTET_STRING_free(point);
+ }
+ }
+#endif /* ENABLE_PKCS11_ECDSA */
} else {
cp = attribs[3].pValue;
if ((x509 = X509_new()) == NULL) {
@@ -639,13 +879,28 @@ pkcs11_fetch_keys_filter(struct pkcs11_p
X509_free(x509);
EVP_PKEY_free(evp);
}
- if (rsa && rsa->n && rsa->e &&
- pkcs11_rsa_wrap(p, slotidx, &attribs[0], &attribs[1], rsa) == 0) {
- if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
- fatal("sshkey_new failed");
- key->rsa = rsa;
- key->type = KEY_RSA;
- key->flags |= SSHKEY_FLAG_EXT;
+ key = NULL;
+ if (rsa || ecdsa) {
+ if (rsa && rsa->n && rsa->e &&
+ pkcs11_rsa_wrap(p, slotidx, &attribs[0], &attribs[1], rsa) == 0) {
+ if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
+ fatal("sshkey_new failed");
+ key->rsa = rsa;
+ key->type = KEY_RSA;
+ key->flags |= SSHKEY_FLAG_EXT;
+#ifdef ENABLE_PKCS11_ECDSA
+ } else if(ecdsa && pkcs11_ecdsa_wrap(p, slotidx, &attribs[0], &attribs[1], ecdsa) == 0) {
+ if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
+ fatal("sshkey_new failed");
+ key->ecdsa = ecdsa;
+ key->ecdsa_nid = sshkey_ecdsa_key_to_nid(ecdsa);
+ key->type = KEY_ECDSA;
+ key->flags |= SSHKEY_FLAG_EXT;
+#endif /* ENABLE_PKCS11_ECDSA */
+ }
+ }
+
+ if(key) {
if (pkcs11_key_included(keysp, nkeys, key)) {
sshkey_free(key);
} else {
@@ -658,6 +913,10 @@ pkcs11_fetch_keys_filter(struct pkcs11_p
}
} else if (rsa) {
RSA_free(rsa);
+#ifdef ENABLE_PKCS11_ECDSA
+ } else if (ecdsa) {
+ EC_KEY_free(ecdsa);
+#endif /* ENABLE_PKCS11_ECDSA */
}
for (i = 0; i < nattribs; i++)
free(attribs[i].pValue);
diff -up openssh-7.6p1/ssh-pkcs11-helper.c.pkcs11-ecdsa openssh-7.6p1/ssh-pkcs11-helper.c
--- openssh-7.6p1/ssh-pkcs11-helper.c.pkcs11-ecdsa 2017-10-02 21:34:26.000000000 +0200
+++ openssh-7.6p1/ssh-pkcs11-helper.c 2018-02-16 13:25:59.428469265 +0100
@@ -24,6 +24,17 @@
#include "openbsd-compat/sys-queue.h"
+#include <openssl/rsa.h>
+#ifdef OPENSSL_HAS_ECC
+#include <openssl/ecdsa.h>
+#if ((defined(LIBRESSL_VERSION_NUMBER) && \
+ (LIBRESSL_VERSION_NUMBER >= 0x20010002L))) || \
+ (defined(ECDSA_F_ECDSA_METHOD_NEW)) || \
+ (OPENSSL_VERSION_NUMBER >= 0x00010100L)
+#define ENABLE_PKCS11_ECDSA 1
+#endif
+#endif
+
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
@@ -80,7 +90,7 @@ del_keys_by_name(char *name)
if (!strcmp(ki->providername, name)) {
TAILQ_REMOVE(&pkcs11_keylist, ki, next);
free(ki->providername);
- sshkey_free(ki->key);
+ pkcs11_del_key(ki->key);
free(ki);
}
}
@@ -164,6 +174,20 @@ process_del(void)
sshbuf_free(msg);
}
+#ifdef ENABLE_PKCS11_ECDSA
+static u_int EC_KEY_order_size(EC_KEY *key)
+{
+ const EC_GROUP *group = EC_KEY_get0_group(key);
+ BIGNUM *order = BN_new();
+ u_int nbytes = 0;
+ if ((group != NULL) && (order != NULL) && EC_GROUP_get_order(group, order, NULL)) {
+ nbytes = BN_num_bytes(order);
+ }
+ BN_clear_free(order);
+ return nbytes;
+}
+#endif /* ENABLE_PKCS11_ECDSA */
+
static void
process_sign(void)
{
@@ -180,14 +204,38 @@ process_sign(void)
else {
if ((found = lookup_key(key)) != NULL) {
#ifdef WITH_OPENSSL
- int ret;
-
- slen = RSA_size(key->rsa);
- signature = xmalloc(slen);
- if ((ret = RSA_private_encrypt(dlen, data, signature,
- found->rsa, RSA_PKCS1_PADDING)) != -1) {
- slen = ret;
- ok = 0;
+ if(found->type == KEY_RSA) {
+ int ret;
+ slen = RSA_size(key->rsa);
+ signature = xmalloc(slen);
+ if ((ret = RSA_private_encrypt(dlen, data, signature,
+ found->rsa, RSA_PKCS1_PADDING)) != -1) {
+ slen = ret;
+ ok = 0;
+ }
+#ifdef ENABLE_PKCS11_ECDSA
+ } else if(found->type == KEY_ECDSA) {
+ ECDSA_SIG *sig;
+ const BIGNUM *r = NULL, *s = NULL;
+ if ((sig = ECDSA_do_sign(data, dlen, found->ecdsa)) != NULL) {
+ /* PKCS11 2.3.1 recommends both r and s to have the order size for
+ backward compatiblity */
+ ECDSA_SIG_get0(sig, &r, &s);
+ u_int o_len = EC_KEY_order_size(found->ecdsa);
+ u_int r_len = BN_num_bytes(r);
+ u_int s_len = BN_num_bytes(s);
+ if (o_len > 0 && r_len <= o_len && s_len <= o_len) {
+ signature = xcalloc(2, o_len);
+ BN_bn2bin(r, signature + o_len - r_len);
+ BN_bn2bin(s, signature + (2 * o_len) - s_len);
+ slen = 2 * o_len;
+ ok = 0;
+ }
+ ECDSA_SIG_free(sig);
+ }
+#endif /* ENABLE_PKCS11_ECDSA */
+ } else {
+ /* Unsupported type */
}
#endif /* WITH_OPENSSL */
}
diff -up openssh-7.6p1/ssh-pkcs11.h.pkcs11-ecdsa openssh-7.6p1/ssh-pkcs11.h
--- openssh-7.6p1/ssh-pkcs11.h.pkcs11-ecdsa 2018-02-16 13:25:59.429469272 +0100
+++ openssh-7.6p1/ssh-pkcs11.h 2018-02-16 13:45:29.623800048 +0100
@@ -20,6 +20,7 @@
int pkcs11_init(int);
void pkcs11_terminate(void);
int pkcs11_add_provider(char *, char *, struct sshkey ***);
+int pkcs11_del_key(struct sshkey *);
int pkcs11_add_provider_by_uri(struct pkcs11_uri *, char *, struct sshkey ***);
int pkcs11_del_provider(char *);
int pkcs11_uri_write(const struct sshkey *, FILE *);
diff -up openssh-7.6p1/ssh-pkcs11.c.old openssh-7.6p1/ssh-pkcs11.c
--- openssh-7.6p1/ssh-pkcs11.c.old 2018-02-16 16:43:08.861520255 +0100
+++ openssh-7.6p1/ssh-pkcs11.c 2018-02-16 16:56:35.312601451 +0100
@@ -917,13 +917,28 @@ pkcs11_fetch_keys_filter(struct pkcs11_p
} else if (d2i_X509(&x509, &cp, attribs[3].ulValueLen)
== NULL) {
error("d2i_X509 failed");
- } else if ((evp = X509_get_pubkey(x509)) == NULL ||
- evp->type != EVP_PKEY_RSA ||
- evp->pkey.rsa == NULL) {
- debug("X509_get_pubkey failed or no rsa");
- } else if ((rsa = RSAPublicKey_dup(evp->pkey.rsa))
- == NULL) {
- error("RSAPublicKey_dup");
+ } else if ((evp = X509_get_pubkey(x509)) == NULL) {
+ debug("X509_get_pubkey failed");
+ } else {
+ switch (evp->type) {
+ case EVP_PKEY_RSA:
+ if (evp->pkey.rsa == NULL)
+ debug("Missing RSA key");
+ else if ((rsa = RSAPublicKey_dup(
+ evp->pkey.rsa)) == NULL)
+ error("RSAPublicKey_dup failed");
+ break;
+ case EVP_PKEY_EC:
+ if (evp->pkey.ecdsa == NULL)
+ debug("Missing ECDSA key");
+ else if ((ecdsa = EC_KEY_dup(
+ evp->pkey.ecdsa)) == NULL)
+ error("EC_KEY_dup failed");
+ break;
+ default:
+ debug("not a RSA or ECDSA key");
+ break;
+ }
}
X509_free(x509);
EVP_PKEY_free(evp);

4771
SOURCES/openssh-7.6p1-pkcs11-uri.patch Normal file
View File

File diff suppressed because it is too large Load Diff

709
SOURCES/openssh-7.7p1-fips.patch Normal file
View File

@ -0,0 +1,709 @@
diff -up openssh-7.7p1/cipher.c.fips openssh-7.7p1/cipher.c
--- openssh-7.7p1/cipher.c.fips 2018-08-08 10:08:40.814719906 +0200
+++ openssh-7.7p1/cipher.c 2018-08-08 10:08:40.821719965 +0200
@@ -39,6 +39,8 @@
#include <sys/types.h>
+#include <openssl/fips.h>
+
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
@@ -90,6 +92,33 @@ static const struct sshcipher ciphers[]
{ NULL, 0, 0, 0, 0, 0, NULL }
};
+static const struct sshcipher fips_ciphers[] = {
+#ifdef WITH_OPENSSL
+ { "3des-cbc", 8, 24, 0, 0, CFLAG_CBC, EVP_des_ede3_cbc },
+ { "aes128-cbc", 16, 16, 0, 0, CFLAG_CBC, EVP_aes_128_cbc },
+ { "aes192-cbc", 16, 24, 0, 0, CFLAG_CBC, EVP_aes_192_cbc },
+ { "aes256-cbc", 16, 32, 0, 0, CFLAG_CBC, EVP_aes_256_cbc },
+ { "rijndael-cbc@lysator.liu.se",
+ 16, 32, 0, 0, CFLAG_CBC, EVP_aes_256_cbc },
+ { "aes128-ctr", 16, 16, 0, 0, 0, EVP_aes_128_ctr },
+ { "aes192-ctr", 16, 24, 0, 0, 0, EVP_aes_192_ctr },
+ { "aes256-ctr", 16, 32, 0, 0, 0, EVP_aes_256_ctr },
+# ifdef OPENSSL_HAVE_EVPGCM
+ { "aes128-gcm@openssh.com",
+ 16, 16, 12, 16, 0, EVP_aes_128_gcm },
+ { "aes256-gcm@openssh.com",
+ 16, 32, 12, 16, 0, EVP_aes_256_gcm },
+# endif /* OPENSSL_HAVE_EVPGCM */
+#else
+ { "aes128-ctr", 16, 16, 0, 0, CFLAG_AESCTR, NULL },
+ { "aes192-ctr", 16, 24, 0, 0, CFLAG_AESCTR, NULL },
+ { "aes256-ctr", 16, 32, 0, 0, CFLAG_AESCTR, NULL },
+#endif
+ { "none", 8, 0, 0, 0, CFLAG_NONE, NULL },
+
+ { NULL, 0, 0, 0, 0, 0, NULL }
+};
+
/*--*/
/* Returns a comma-separated list of supported ciphers. */
@@ -100,7 +129,7 @@ cipher_alg_list(char sep, int auth_only)
size_t nlen, rlen = 0;
const struct sshcipher *c;
- for (c = ciphers; c->name != NULL; c++) {
+ for (c = FIPS_mode() ? fips_ciphers : ciphers; c->name != NULL; c++) {
if ((c->flags & CFLAG_INTERNAL) != 0)
continue;
if (auth_only && c->auth_len == 0)
@@ -172,7 +201,7 @@ const struct sshcipher *
cipher_by_name(const char *name)
{
const struct sshcipher *c;
- for (c = ciphers; c->name != NULL; c++)
+ for (c = FIPS_mode() ? fips_ciphers : ciphers; c->name != NULL; c++)
if (strcmp(c->name, name) == 0)
return c;
return NULL;
diff -up openssh-7.7p1/cipher-ctr.c.fips openssh-7.7p1/cipher-ctr.c
--- openssh-7.7p1/cipher-ctr.c.fips 2018-08-08 10:08:40.709719021 +0200
+++ openssh-7.7p1/cipher-ctr.c 2018-08-08 10:08:40.821719965 +0200
@@ -179,7 +179,8 @@ evp_aes_128_ctr(void)
aes_ctr.do_cipher = ssh_aes_ctr;
#ifndef SSH_OLD_EVP
aes_ctr.flags = EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH |
- EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CUSTOM_IV;
+ EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CUSTOM_IV |
+ EVP_CIPH_FLAG_FIPS;
#endif
return (&aes_ctr);
}
diff -up openssh-7.7p1/clientloop.c.fips openssh-7.7p1/clientloop.c
--- openssh-7.7p1/clientloop.c.fips 2018-08-08 10:08:40.769719527 +0200
+++ openssh-7.7p1/clientloop.c 2018-08-08 10:08:40.822719973 +0200
@@ -1978,7 +1978,8 @@ key_accepted_by_hostkeyalgs(const struct
{
const char *ktype = sshkey_ssh_name(key);
const char *hostkeyalgs = options.hostkeyalgorithms != NULL ?
- options.hostkeyalgorithms : KEX_DEFAULT_PK_ALG;
+ options.hostkeyalgorithms : (FIPS_mode() ?
+ KEX_FIPS_PK_ALG : KEX_DEFAULT_PK_ALG);
if (key == NULL || key->type == KEY_UNSPEC)
return 0;
diff -up openssh-7.7p1/dh.h.fips openssh-7.7p1/dh.h
--- openssh-7.7p1/dh.h.fips 2018-04-02 07:38:28.000000000 +0200
+++ openssh-7.7p1/dh.h 2018-08-08 10:08:40.822719973 +0200
@@ -51,6 +51,7 @@ u_int dh_estimate(int);
* Miniumum increased in light of DH precomputation attacks.
*/
#define DH_GRP_MIN 2048
+#define DH_GRP_MIN_FIPS 2048
#define DH_GRP_MAX 8192
/*
diff -up openssh-7.7p1/entropy.c.fips openssh-7.7p1/entropy.c
--- openssh-7.7p1/entropy.c.fips 2018-08-08 10:08:40.698718928 +0200
+++ openssh-7.7p1/entropy.c 2018-08-08 10:08:40.822719973 +0200
@@ -217,6 +217,9 @@ seed_rng(void)
fatal("OpenSSL version mismatch. Built against %lx, you "
"have %lx", (u_long)OPENSSL_VERSION_NUMBER, SSLeay());
+ /* clean the PRNG status when exiting the program */
+ atexit(RAND_cleanup);
+
#ifndef OPENSSL_PRNG_ONLY
if (RAND_status() == 1) {
debug3("RNG is ready, skipping seeding");
diff -up openssh-7.7p1/kex.c.fips openssh-7.7p1/kex.c
--- openssh-7.7p1/kex.c.fips 2018-08-08 10:08:40.815719915 +0200
+++ openssh-7.7p1/kex.c 2018-08-08 10:11:24.109081924 +0200
@@ -35,6 +35,7 @@
#ifdef WITH_OPENSSL
#include <openssl/crypto.h>
#include <openssl/dh.h>
+#include <openssl/fips.h>
#endif
#include "ssh2.h"
@@ -122,6 +123,26 @@ static const struct kexalg kexalgs[] = {
{ NULL, -1, -1, -1},
};
+static const struct kexalg kexalgs_fips[] = {
+ { KEX_DH14_SHA256, KEX_DH_GRP14_SHA256, 0, SSH_DIGEST_SHA256 },
+ { KEX_DH16_SHA512, KEX_DH_GRP16_SHA512, 0, SSH_DIGEST_SHA512 },
+ { KEX_DH18_SHA512, KEX_DH_GRP18_SHA512, 0, SSH_DIGEST_SHA512 },
+#ifdef HAVE_EVP_SHA256
+ { KEX_DHGEX_SHA256, KEX_DH_GEX_SHA256, 0, SSH_DIGEST_SHA256 },
+#endif
+#ifdef OPENSSL_HAS_ECC
+ { KEX_ECDH_SHA2_NISTP256, KEX_ECDH_SHA2,
+ NID_X9_62_prime256v1, SSH_DIGEST_SHA256 },
+ { KEX_ECDH_SHA2_NISTP384, KEX_ECDH_SHA2, NID_secp384r1,
+ SSH_DIGEST_SHA384 },
+# ifdef OPENSSL_HAS_NISTP521
+ { KEX_ECDH_SHA2_NISTP521, KEX_ECDH_SHA2, NID_secp521r1,
+ SSH_DIGEST_SHA512 },
+# endif
+#endif
+ { NULL, -1, -1, -1},
+};
+
char *
kex_alg_list(char sep)
{
@@ -129,7 +150,7 @@ kex_alg_list(char sep)
size_t nlen, rlen = 0;
const struct kexalg *k;
- for (k = kexalgs; k->name != NULL; k++) {
+ for (k = (FIPS_mode() ? kexalgs_fips : kexalgs); k->name != NULL; k++) {
if (ret != NULL)
ret[rlen++] = sep;
nlen = strlen(k->name);
@@ -149,7 +170,7 @@ kex_alg_by_name(const char *name)
{
const struct kexalg *k;
- for (k = kexalgs; k->name != NULL; k++) {
+ for (k = (FIPS_mode() ? kexalgs_fips : kexalgs); k->name != NULL; k++) {
if (strcmp(k->name, name) == 0)
return k;
#ifdef GSSAPI
@@ -175,7 +196,10 @@ kex_names_valid(const char *names)
for ((p = strsep(&cp, ",")); p && *p != '\0';
(p = strsep(&cp, ","))) {
if (kex_alg_by_name(p) == NULL) {
- error("Unsupported KEX algorithm \"%.100s\"", p);
+ if (FIPS_mode())
+ error("\"%.100s\" is not allowed in FIPS mode", p);
+ else
+ error("Unsupported KEX algorithm \"%.100s\"", p);
free(s);
return 0;
}
diff -up openssh-7.7p1/kexgexc.c.fips openssh-7.7p1/kexgexc.c
--- openssh-7.7p1/kexgexc.c.fips 2018-04-02 07:38:28.000000000 +0200
+++ openssh-7.7p1/kexgexc.c 2018-08-08 10:08:40.822719973 +0200
@@ -28,6 +28,7 @@
#ifdef WITH_OPENSSL
+#include <openssl/fips.h>
#include <sys/types.h>
#include <openssl/dh.h>
@@ -63,7 +64,7 @@ kexgex_client(struct ssh *ssh)
nbits = dh_estimate(kex->dh_need * 8);
- kex->min = DH_GRP_MIN;
+ kex->min = FIPS_mode() ? DH_GRP_MIN_FIPS : DH_GRP_MIN;
kex->max = DH_GRP_MAX;
kex->nbits = nbits;
if (datafellows & SSH_BUG_DHGEX_LARGE)
diff -up openssh-7.7p1/kexgexs.c.fips openssh-7.7p1/kexgexs.c
--- openssh-7.7p1/kexgexs.c.fips 2018-04-02 07:38:28.000000000 +0200
+++ openssh-7.7p1/kexgexs.c 2018-08-08 10:08:40.823719982 +0200
@@ -82,9 +82,9 @@ input_kex_dh_gex_request(int type, u_int
kex->nbits = nbits;
kex->min = min;
kex->max = max;
- min = MAXIMUM(DH_GRP_MIN, min);
+ min = MAXIMUM(FIPS_mode() ? DH_GRP_MIN_FIPS : DH_GRP_MIN, min);
max = MINIMUM(DH_GRP_MAX, max);
- nbits = MAXIMUM(DH_GRP_MIN, nbits);
+ nbits = MAXIMUM(FIPS_mode() ? DH_GRP_MIN_FIPS : DH_GRP_MIN, nbits);
nbits = MINIMUM(DH_GRP_MAX, nbits);
if (kex->max < kex->min || kex->nbits < kex->min ||
diff -up openssh-7.7p1/mac.c.fips openssh-7.7p1/mac.c
--- openssh-7.7p1/mac.c.fips 2018-08-08 10:08:40.815719915 +0200
+++ openssh-7.7p1/mac.c 2018-08-08 10:11:56.915352642 +0200
@@ -27,6 +27,8 @@
#include <sys/types.h>
+#include <openssl/fips.h>
+
#include <string.h>
#include <stdio.h>
@@ -54,7 +56,7 @@ struct macalg {
int etm; /* Encrypt-then-MAC */
};
-static const struct macalg macs[] = {
+static const struct macalg all_macs[] = {
/* Encrypt-and-MAC (encrypt-and-authenticate) variants */
{ "hmac-sha1", SSH_DIGEST, SSH_DIGEST_SHA1, 0, 0, 0, 0 },
{ "hmac-sha1-96", SSH_DIGEST, SSH_DIGEST_SHA1, 96, 0, 0, 0 },
@@ -82,6 +84,24 @@ static const struct macalg macs[] = {
{ NULL, 0, 0, 0, 0, 0, 0 }
};
+static const struct macalg fips_macs[] = {
+ /* Encrypt-and-MAC (encrypt-and-authenticate) variants */
+ { "hmac-sha1", SSH_DIGEST, SSH_DIGEST_SHA1, 0, 0, 0, 0 },
+#ifdef HAVE_EVP_SHA256
+ { "hmac-sha2-256", SSH_DIGEST, SSH_DIGEST_SHA256, 0, 0, 0, 0 },
+ { "hmac-sha2-512", SSH_DIGEST, SSH_DIGEST_SHA512, 0, 0, 0, 0 },
+#endif
+
+ /* Encrypt-then-MAC variants */
+ { "hmac-sha1-etm@openssh.com", SSH_DIGEST, SSH_DIGEST_SHA1, 0, 0, 0, 1 },
+#ifdef HAVE_EVP_SHA256
+ { "hmac-sha2-256-etm@openssh.com", SSH_DIGEST, SSH_DIGEST_SHA256, 0, 0, 0, 1 },
+ { "hmac-sha2-512-etm@openssh.com", SSH_DIGEST, SSH_DIGEST_SHA512, 0, 0, 0, 1 },
+#endif
+
+ { NULL, 0, 0, 0, 0, 0, 0 }
+};
+
/* Returns a list of supported MACs separated by the specified char. */
char *
mac_alg_list(char sep)
@@ -90,7 +110,7 @@ mac_alg_list(char sep)
size_t nlen, rlen = 0;
const struct macalg *m;
- for (m = macs; m->name != NULL; m++) {
+ for (m = FIPS_mode() ? fips_macs : all_macs; m->name != NULL; m++) {
if (ret != NULL)
ret[rlen++] = sep;
nlen = strlen(m->name);
@@ -129,7 +149,7 @@ mac_setup(struct sshmac *mac, char *name
{
const struct macalg *m;
- for (m = macs; m->name != NULL; m++) {
+ for (m = FIPS_mode() ? fips_macs : all_macs; m->name != NULL; m++) {
if (strcmp(name, m->name) != 0)
continue;
if (mac != NULL)
diff -up openssh-7.7p1/Makefile.in.fips openssh-7.7p1/Makefile.in
--- openssh-7.7p1/Makefile.in.fips 2018-08-08 10:08:40.815719915 +0200
+++ openssh-7.7p1/Makefile.in 2018-08-08 10:08:40.823719982 +0200
@@ -179,25 +179,25 @@ libssh.a: $(LIBSSH_OBJS)
$(RANLIB) $@
ssh$(EXEEXT): $(LIBCOMPAT) libssh.a $(SSHOBJS)
- $(LD) -o $@ $(SSHOBJS) $(LDFLAGS) -lssh -lopenbsd-compat $(SSHLIBS) $(LIBS) $(GSSLIBS)
+ $(LD) -o $@ $(SSHOBJS) $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(SSHLIBS) $(LIBS) $(GSSLIBS)
sshd$(EXEEXT): libssh.a $(LIBCOMPAT) $(SSHDOBJS)
- $(LD) -o $@ $(SSHDOBJS) $(LDFLAGS) -lssh -lopenbsd-compat $(SSHDLIBS) $(LIBS) $(GSSLIBS) $(K5LIBS)
+ $(LD) -o $@ $(SSHDOBJS) $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(SSHDLIBS) $(LIBS) $(GSSLIBS) $(K5LIBS)
scp$(EXEEXT): $(LIBCOMPAT) libssh.a scp.o progressmeter.o
$(LD) -o $@ scp.o progressmeter.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)
ssh-add$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-add.o
- $(LD) -o $@ ssh-add.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)
+ $(LD) -o $@ ssh-add.o $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(LIBS)
ssh-agent$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-agent.o ssh-pkcs11-client.o
- $(LD) -o $@ ssh-agent.o ssh-pkcs11-client.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)
+ $(LD) -o $@ ssh-agent.o ssh-pkcs11-client.o $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(LIBS)
ssh-keygen$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-keygen.o
- $(LD) -o $@ ssh-keygen.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)
+ $(LD) -o $@ ssh-keygen.o $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(LIBS)
ssh-keysign$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-keysign.o readconf.o uidswap.o
- $(LD) -o $@ ssh-keysign.o readconf.o uidswap.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)
+ $(LD) -o $@ ssh-keysign.o readconf.o uidswap.o $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(LIBS)
ssh-pkcs11-helper$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-pkcs11-helper.o ssh-pkcs11.o
$(LD) -o $@ ssh-pkcs11-helper.o ssh-pkcs11.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh -lopenbsd-compat $(LIBS)
@@ -215,7 +215,7 @@ ssh-cavs$(EXEEXT): $(LIBCOMPAT) libssh.a
$(LD) -o $@ ssh-cavs.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)
ssh-keyscan$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-keyscan.o
- $(LD) -o $@ ssh-keyscan.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh $(LIBS)
+ $(LD) -o $@ ssh-keyscan.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh -lfipscheck $(LIBS)
sftp-server$(EXEEXT): $(LIBCOMPAT) libssh.a sftp.o sftp-common.o sftp-server.o sftp-server-main.o
$(LD) -o $@ sftp-server.o sftp-common.o sftp-server-main.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)
diff -up openssh-7.7p1/myproposal.h.fips openssh-7.7p1/myproposal.h
--- openssh-7.7p1/myproposal.h.fips 2018-04-02 07:38:28.000000000 +0200
+++ openssh-7.7p1/myproposal.h 2018-08-08 10:08:40.823719982 +0200
@@ -114,6 +114,14 @@
"rsa-sha2-256," \
"ssh-rsa"
+#define KEX_FIPS_PK_ALG \
+ HOSTKEY_ECDSA_CERT_METHODS \
+ "ssh-rsa-cert-v01@openssh.com," \
+ HOSTKEY_ECDSA_METHODS \
+ "rsa-sha2-512," \
+ "rsa-sha2-256," \
+ "ssh-rsa"
+
/* the actual algorithms */
#define KEX_SERVER_ENCRYPT \
@@ -137,6 +145,38 @@
#define KEX_CLIENT_MAC KEX_SERVER_MAC
+#define KEX_FIPS_ENCRYPT \
+ "aes128-ctr,aes192-ctr,aes256-ctr," \
+ "aes128-cbc,3des-cbc," \
+ "aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se" \
+ AESGCM_CIPHER_MODES
+#ifdef HAVE_EVP_SHA256
+# define KEX_DEFAULT_KEX_FIPS \
+ KEX_ECDH_METHODS \
+ KEX_SHA2_METHODS \
+ "diffie-hellman-group14-sha256"
+# define KEX_FIPS_MAC \
+ "hmac-sha1," \
+ "hmac-sha2-256," \
+ "hmac-sha2-512," \
+ "hmac-sha1-etm@openssh.com," \
+ "hmac-sha2-256-etm@openssh.com," \
+ "hmac-sha2-512-etm@openssh.com"
+#else
+# ifdef OPENSSL_HAS_NISTP521
+# define KEX_DEFAULT_KEX_FIPS \
+ "ecdh-sha2-nistp256," \
+ "ecdh-sha2-nistp384," \
+ "ecdh-sha2-nistp521"
+# else
+# define KEX_DEFAULT_KEX_FIPS \
+ "ecdh-sha2-nistp256," \
+ "ecdh-sha2-nistp384"
+# endif
+#define KEX_FIPS_MAC \
+ "hmac-sha1"
+#endif
+
#else /* WITH_OPENSSL */
#define KEX_SERVER_KEX \
diff -up openssh-7.7p1/readconf.c.fips openssh-7.7p1/readconf.c
--- openssh-7.7p1/readconf.c.fips 2018-08-08 10:08:40.769719527 +0200
+++ openssh-7.7p1/readconf.c 2018-08-08 10:08:40.824719990 +0200
@@ -2081,17 +2081,18 @@ fill_default_options(Options * options)
all_mac = mac_alg_list(',');
all_kex = kex_alg_list(',');
all_key = sshkey_alg_list(0, 0, 1, ',');
-#define ASSEMBLE(what, defaults, all) \
+#define ASSEMBLE(what, defaults, fips_defaults, all) \
do { \
if ((r = kex_assemble_names(&options->what, \
- defaults, all)) != 0) \
+ (FIPS_mode() ? fips_defaults : defaults), \
+ all)) != 0) \
fatal("%s: %s: %s", __func__, #what, ssh_err(r)); \
} while (0)
- ASSEMBLE(ciphers, KEX_SERVER_ENCRYPT, all_cipher);
- ASSEMBLE(macs, KEX_SERVER_MAC, all_mac);
- ASSEMBLE(kex_algorithms, KEX_SERVER_KEX, all_kex);
- ASSEMBLE(hostbased_key_types, KEX_DEFAULT_PK_ALG, all_key);
- ASSEMBLE(pubkey_key_types, KEX_DEFAULT_PK_ALG, all_key);
+ ASSEMBLE(ciphers, KEX_SERVER_ENCRYPT, KEX_FIPS_ENCRYPT, all_cipher);
+ ASSEMBLE(macs, KEX_SERVER_MAC, KEX_FIPS_MAC, all_mac);
+ ASSEMBLE(kex_algorithms, KEX_SERVER_KEX, KEX_DEFAULT_KEX_FIPS, all_kex);
+ ASSEMBLE(hostbased_key_types, KEX_DEFAULT_PK_ALG, KEX_FIPS_PK_ALG, all_key);
+ ASSEMBLE(pubkey_key_types, KEX_DEFAULT_PK_ALG, KEX_FIPS_PK_ALG, all_key);
#undef ASSEMBLE
free(all_cipher);
free(all_mac);
diff -up openssh-7.7p1/sandbox-seccomp-filter.c.fips openssh-7.7p1/sandbox-seccomp-filter.c
--- openssh-7.7p1/sandbox-seccomp-filter.c.fips 2018-08-08 10:08:40.794719737 +0200
+++ openssh-7.7p1/sandbox-seccomp-filter.c 2018-08-08 10:08:40.824719990 +0200
@@ -137,6 +137,9 @@ static const struct sock_filter preauth_
#ifdef __NR_open
SC_DENY(__NR_open, EACCES),
#endif
+#ifdef __NR_socket
+ SC_DENY(__NR_socket, EACCES),
+#endif
#ifdef __NR_openat
SC_DENY(__NR_openat, EACCES),
#endif
diff -up openssh-7.7p1/servconf.c.fips openssh-7.7p1/servconf.c
--- openssh-7.7p1/servconf.c.fips 2018-08-08 10:08:40.778719603 +0200
+++ openssh-7.7p1/servconf.c 2018-08-08 10:08:40.824719990 +0200
@@ -196,17 +196,18 @@ option_clear_or_none(const char *o)
all_mac = mac_alg_list(',');
all_kex = kex_alg_list(',');
all_key = sshkey_alg_list(0, 0, 1, ',');
-#define ASSEMBLE(what, defaults, all) \
+#define ASSEMBLE(what, defaults, fips_defaults, all) \
do { \
- if ((r = kex_assemble_names(&o->what, defaults, all)) != 0) \
+ if ((r = kex_assemble_names(&o->what, (FIPS_mode() \
+ ? fips_defaults : defaults), all)) != 0) \
fatal("%s: %s: %s", __func__, #what, ssh_err(r)); \
} while (0)
- ASSEMBLE(ciphers, KEX_SERVER_ENCRYPT, all_cipher);
- ASSEMBLE(macs, KEX_SERVER_MAC, all_mac);
- ASSEMBLE(kex_algorithms, KEX_SERVER_KEX, all_kex);
- ASSEMBLE(hostkeyalgorithms, KEX_DEFAULT_PK_ALG, all_key);
- ASSEMBLE(hostbased_key_types, KEX_DEFAULT_PK_ALG, all_key);
- ASSEMBLE(pubkey_key_types, KEX_DEFAULT_PK_ALG, all_key);
+ ASSEMBLE(ciphers, KEX_SERVER_ENCRYPT, KEX_FIPS_ENCRYPT, all_cipher);
+ ASSEMBLE(macs, KEX_SERVER_MAC, KEX_FIPS_MAC, all_mac);
+ ASSEMBLE(kex_algorithms, KEX_SERVER_KEX, KEX_DEFAULT_KEX_FIPS, all_kex);
+ ASSEMBLE(hostkeyalgorithms, KEX_DEFAULT_PK_ALG, KEX_FIPS_PK_ALG, all_key);
+ ASSEMBLE(hostbased_key_types, KEX_DEFAULT_PK_ALG, KEX_FIPS_PK_ALG, all_key);
+ ASSEMBLE(pubkey_key_types, KEX_DEFAULT_PK_ALG, KEX_FIPS_PK_ALG, all_key);
#undef ASSEMBLE
free(all_cipher);
free(all_mac);
diff -up openssh-7.7p1/ssh.c.fips openssh-7.7p1/ssh.c
--- openssh-7.7p1/ssh.c.fips 2018-08-08 10:08:40.811719881 +0200
+++ openssh-7.7p1/ssh.c 2018-08-08 10:08:40.825719999 +0200
@@ -76,6 +76,8 @@
#include <openssl/evp.h>
#include <openssl/err.h>
#endif
+#include <openssl/fips.h>
+#include <fipscheck.h>
#include "openbsd-compat/openssl-compat.h"
#include "openbsd-compat/sys-queue.h"
@@ -579,6 +581,14 @@ main(int ac, char **av)
sanitise_stdfd();
__progname = ssh_get_progname(av[0]);
+ SSLeay_add_all_algorithms();
+ if (access("/etc/system-fips", F_OK) == 0)
+ if (! FIPSCHECK_verify(NULL, NULL)){
+ if (FIPS_mode())
+ fatal("FIPS integrity verification test failed.");
+ else
+ logit("FIPS integrity verification test failed.");
+ }
#ifndef HAVE_SETPROCTITLE
/* Prepare for later setproctitle emulation */
@@ -1045,7 +1055,6 @@ main(int ac, char **av)
host_arg = xstrdup(host);
#ifdef WITH_OPENSSL
- OpenSSL_add_all_algorithms();
ERR_load_crypto_strings();
#endif
@@ -1268,6 +1277,10 @@ main(int ac, char **av)
seed_rng();
+ if (FIPS_mode()) {
+ logit("FIPS mode initialized");
+ }
+
if (options.user == NULL)
options.user = xstrdup(pw->pw_name);
diff -up openssh-7.7p1/sshconnect2.c.fips openssh-7.7p1/sshconnect2.c
--- openssh-7.7p1/sshconnect2.c.fips 2018-08-08 10:08:40.786719670 +0200
+++ openssh-7.7p1/sshconnect2.c 2018-08-08 10:08:40.825719999 +0200
@@ -44,6 +44,8 @@
#include <vis.h>
#endif
+#include <openssl/fips.h>
+
#include "openbsd-compat/sys-queue.h"
#include "xmalloc.h"
@@ -235,7 +237,8 @@ order_hostkeyalgs(char *host, struct soc
for (i = 0; i < options.num_system_hostfiles; i++)
load_hostkeys(hostkeys, hostname, options.system_hostfiles[i]);
- oavail = avail = xstrdup(KEX_DEFAULT_PK_ALG);
+ oavail = avail = xstrdup((FIPS_mode()
+ ? KEX_FIPS_PK_ALG : KEX_DEFAULT_PK_ALG));
maxlen = strlen(avail) + 1;
first = xmalloc(maxlen);
last = xmalloc(maxlen);
@@ -290,23 +293,28 @@ ssh_kex2(char *host, struct sockaddr *ho
#ifdef GSSAPI
if (options.gss_keyex) {
- /* Add the GSSAPI mechanisms currently supported on this
- * client to the key exchange algorithm proposal */
- orig = options.kex_algorithms;
-
- if (options.gss_server_identity)
- gss_host = options.gss_server_identity;
- else if (options.gss_trust_dns)
- gss_host = (char *)get_canonical_hostname(active_state, 1);
- else
- gss_host = host;
-
- gss = ssh_gssapi_client_mechanisms(gss_host,
- options.gss_client_identity, options.gss_kex_algorithms);
- if (gss) {
- debug("Offering GSSAPI proposal: %s", gss);
- xasprintf(&options.kex_algorithms,
- "%s,%s", gss, orig);
+ if (FIPS_mode()) {
+ logit("Disabling GSSAPIKeyExchange. Not usable in FIPS mode");
+ options.gss_keyex = 0;
+ } else {
+ /* Add the GSSAPI mechanisms currently supported on this
+ * client to the key exchange algorithm proposal */
+ orig = options.kex_algorithms;
+
+ if (options.gss_server_identity)
+ gss_host = options.gss_server_identity;
+ else if (options.gss_trust_dns)
+ gss_host = (char *)get_canonical_hostname(active_state, 1);
+ else
+ gss_host = host;
+
+ gss = ssh_gssapi_client_mechanisms(gss_host,
+ options.gss_client_identity, options.gss_kex_algorithms);
+ if (gss) {
+ debug("Offering GSSAPI proposal: %s", gss);
+ xasprintf(&options.kex_algorithms,
+ "%s,%s", gss, orig);
+ }
}
}
#endif
@@ -322,14 +330,16 @@ ssh_kex2(char *host, struct sockaddr *ho
if (options.hostkeyalgorithms != NULL) {
all_key = sshkey_alg_list(0, 0, 1, ',');
if (kex_assemble_names(&options.hostkeyalgorithms,
- KEX_DEFAULT_PK_ALG, all_key) != 0)
+ (FIPS_mode() ? KEX_FIPS_PK_ALG : KEX_DEFAULT_PK_ALG),
+ all_key) != 0)
fatal("%s: kex_assemble_namelist", __func__);
free(all_key);
myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS] =
compat_pkalg_proposal(options.hostkeyalgorithms);
} else {
/* Enforce default */
- options.hostkeyalgorithms = xstrdup(KEX_DEFAULT_PK_ALG);
+ options.hostkeyalgorithms = xstrdup((FIPS_mode()
+ ? KEX_FIPS_PK_ALG : KEX_DEFAULT_PK_ALG));
/* Prefer algorithms that we already have keys for */
myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS] =
compat_pkalg_proposal(
diff -up openssh-7.7p1/sshd.c.fips openssh-7.7p1/sshd.c
--- openssh-7.7p1/sshd.c.fips 2018-08-08 10:08:40.818719940 +0200
+++ openssh-7.7p1/sshd.c 2018-08-08 10:08:40.826720007 +0200
@@ -66,6 +66,7 @@
#include <grp.h>
#include <pwd.h>
#include <signal.h>
+#include <syslog.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
@@ -77,6 +78,8 @@
#include <openssl/dh.h>
#include <openssl/bn.h>
#include <openssl/rand.h>
+#include <openssl/fips.h>
+#include <fipscheck.h>
#include "openbsd-compat/openssl-compat.h"
#endif
@@ -1534,6 +1537,18 @@ main(int ac, char **av)
#endif
__progname = ssh_get_progname(av[0]);
+ SSLeay_add_all_algorithms();
+ if (access("/etc/system-fips", F_OK) == 0)
+ if (! FIPSCHECK_verify(NULL, NULL)) {
+ openlog(__progname, LOG_PID, LOG_AUTHPRIV);
+ if (FIPS_mode()) {
+ syslog(LOG_CRIT, "FIPS integrity verification test failed.");
+ cleanup_exit(255);
+ }
+ else
+ syslog(LOG_INFO, "FIPS integrity verification test failed.");
+ closelog();
+ }
/* Save argv. Duplicate so setproctitle emulation doesn't clobber it */
saved_argc = ac;
rexec_argc = ac;
@@ -1675,7 +1690,7 @@ main(int ac, char **av)
else
closefrom(REEXEC_DEVCRYPTO_RESERVED_FD);
-#ifdef WITH_OPENSSL
+#if 0 /* FIPS */
OpenSSL_add_all_algorithms();
#endif
@@ -1979,6 +1994,10 @@ main(int ac, char **av)
/* Reinitialize the log (because of the fork above). */
log_init(__progname, options.log_level, options.log_facility, log_stderr);
+ if (FIPS_mode()) {
+ logit("FIPS mode initialized");
+ }
+
/* Chdir to the root directory so that the current disk can be
unmounted if desired. */
if (chdir("/") == -1)
@@ -2359,10 +2378,14 @@ do_ssh2_kex(void)
if (strlen(myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS]) == 0)
orig = NULL;
- if (options.gss_keyex)
- gss = ssh_gssapi_server_mechanisms();
- else
- gss = NULL;
+ if (options.gss_keyex) {
+ if (FIPS_mode()) {
+ logit("Disabling GSSAPIKeyExchange. Not usable in FIPS mode");
+ options.gss_keyex = 0;
+ } else {
+ gss = ssh_gssapi_server_mechanisms();
+ }
+ }
if (gss && orig)
xasprintf(&newstr, "%s,%s", gss, orig);
diff -up openssh-7.7p1/sshkey.c.fips openssh-7.7p1/sshkey.c
--- openssh-7.7p1/sshkey.c.fips 2018-08-08 10:08:40.818719940 +0200
+++ openssh-7.7p1/sshkey.c 2018-08-08 10:08:40.826720007 +0200
@@ -34,6 +34,7 @@
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/pem.h>
+#include <openssl/fips.h>
#endif
#include "crypto_api.h"
@@ -57,6 +58,7 @@
#include "sshkey.h"
#include "sshkey-xmss.h"
#include "match.h"
+#include "log.h"
#include "xmss_fast.h"
@@ -1526,6 +1528,8 @@ rsa_generate_private_key(u_int bits, RSA
}
if (!BN_set_word(f4, RSA_F4) ||
!RSA_generate_key_ex(private, bits, f4, NULL)) {
+ if (FIPS_mode())
+ logit("%s: the key length might be unsupported by FIPS mode approved key generation method", __func__);
ret = SSH_ERR_LIBCRYPTO_ERROR;
goto out;
}
diff -up openssh-7.7p1/ssh-keygen.c.fips openssh-7.7p1/ssh-keygen.c
--- openssh-7.7p1/ssh-keygen.c.fips 2018-08-08 10:08:40.801719797 +0200
+++ openssh-7.7p1/ssh-keygen.c 2018-08-08 10:08:40.827720016 +0200
@@ -229,6 +229,12 @@ type_bits_valid(int type, const char *na
OPENSSL_DSA_MAX_MODULUS_BITS : OPENSSL_RSA_MAX_MODULUS_BITS;
if (*bitsp > maxbits)
fatal("key bits exceeds maximum %d", maxbits);
+ if (FIPS_mode()) {
+ if (type == KEY_DSA)
+ fatal("DSA keys are not allowed in FIPS mode");
+ if (type == KEY_ED25519)
+ fatal("ED25519 keys are not allowed in FIPS mode");
+ }
switch (type) {
case KEY_DSA:
if (*bitsp != 1024)

648
SOURCES/openssh-7.7p1-gssapi-new-unique.patch Normal file
View File

@ -0,0 +1,648 @@
diff --git a/auth-krb5.c b/auth-krb5.c
index a5a81ed2..63f877f2 100644
--- a/auth-krb5.c
+++ b/auth-krb5.c
@@ -51,6 +51,7 @@
#include <unistd.h>
#include <string.h>
#include <krb5.h>
+#include <profile.h>
extern ServerOptions options;
@@ -77,7 +78,7 @@ auth_krb5_password(Authctxt *authctxt, const char *password)
#endif
krb5_error_code problem;
krb5_ccache ccache = NULL;
- int len;
+ char *ticket_name = NULL;
char *client, *platform_client;
const char *errmsg;
@@ -163,7 +164,8 @@ auth_krb5_password(Authctxt *authctxt, const char *password)
goto out;
}
- problem = ssh_krb5_cc_gen(authctxt->krb5_ctx, &authctxt->krb5_fwd_ccache);
+ problem = ssh_krb5_cc_new_unique(authctxt->krb5_ctx,
+ &authctxt->krb5_fwd_ccache, &authctxt->krb5_set_env);
if (problem)
goto out;
@@ -172,21 +174,20 @@ auth_krb5_password(Authctxt *authctxt, const char *password)
if (problem)
goto out;
- problem= krb5_cc_store_cred(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache,
+ problem = krb5_cc_store_cred(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache,
&creds);
if (problem)
goto out;
#endif
- authctxt->krb5_ticket_file = (char *)krb5_cc_get_name(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache);
+ problem = krb5_cc_get_full_name(authctxt->krb5_ctx,
+ authctxt->krb5_fwd_ccache, &ticket_name);
- len = strlen(authctxt->krb5_ticket_file) + 6;
- authctxt->krb5_ccname = xmalloc(len);
- snprintf(authctxt->krb5_ccname, len, "FILE:%s",
- authctxt->krb5_ticket_file);
+ authctxt->krb5_ccname = xstrdup(ticket_name);
+ krb5_free_string(authctxt->krb5_ctx, ticket_name);
#ifdef USE_PAM
- if (options.use_pam)
+ if (options.use_pam && authctxt->krb5_set_env)
do_pam_putenv("KRB5CCNAME", authctxt->krb5_ccname);
#endif
@@ -222,11 +223,54 @@ auth_krb5_password(Authctxt *authctxt, const char *password)
void
krb5_cleanup_proc(Authctxt *authctxt)
{
+ struct stat krb5_ccname_stat;
+ char krb5_ccname[128], *krb5_ccname_dir_start, *krb5_ccname_dir_end;
+
debug("krb5_cleanup_proc called");
if (authctxt->krb5_fwd_ccache) {
- krb5_cc_destroy(authctxt->krb5_ctx, authctxt->krb5_fwd_ccache);
+ krb5_context ctx = authctxt->krb5_ctx;
+ krb5_cccol_cursor cursor;
+ krb5_ccache ccache;
+ int ret;
+
+ krb5_cc_destroy(ctx, authctxt->krb5_fwd_ccache);
authctxt->krb5_fwd_ccache = NULL;
+
+ ret = krb5_cccol_cursor_new(ctx, &cursor);
+ if (ret)
+ goto out;
+
+ ret = krb5_cccol_cursor_next(ctx, cursor, &ccache);
+ if (ret == 0 && ccache != NULL) {
+ /* There is at least one other ccache in collection
+ * we can switch to */
+ krb5_cc_switch(ctx, ccache);
+ } else if (authctxt->krb5_ccname != NULL) {
+ /* Clean up the collection too */
+ strncpy(krb5_ccname, authctxt->krb5_ccname, sizeof(krb5_ccname) - 10);
+ krb5_ccname_dir_start = strchr(krb5_ccname, ':') + 1;
+ *krb5_ccname_dir_start++ = '\0';
+ if (strcmp(krb5_ccname, "DIR") == 0) {
+
+ strcat(krb5_ccname_dir_start, "/primary");
+
+ if (stat(krb5_ccname_dir_start, &krb5_ccname_stat) == 0) {
+ if (unlink(krb5_ccname_dir_start) == 0) {
+ krb5_ccname_dir_end = strrchr(krb5_ccname_dir_start, '/');
+ *krb5_ccname_dir_end = '\0';
+ if (rmdir(krb5_ccname_dir_start) == -1)
+ debug("cache dir '%s' remove failed: %s",
+ krb5_ccname_dir_start, strerror(errno));
+ }
+ else
+ debug("cache primary file '%s', remove failed: %s",
+ krb5_ccname_dir_start, strerror(errno));
+ }
+ }
+ }
+ krb5_cccol_cursor_free(ctx, &cursor);
}
+out:
if (authctxt->krb5_user) {
krb5_free_principal(authctxt->krb5_ctx, authctxt->krb5_user);
authctxt->krb5_user = NULL;
@@ -237,36 +287,186 @@ krb5_cleanup_proc(Authctxt *authctxt)
}
}
-#ifndef HEIMDAL
-krb5_error_code
-ssh_krb5_cc_gen(krb5_context ctx, krb5_ccache *ccache) {
- int tmpfd, ret, oerrno;
- char ccname[40];
- mode_t old_umask;
- ret = snprintf(ccname, sizeof(ccname),
- "FILE:/tmp/krb5cc_%d_XXXXXXXXXX", geteuid());
- if (ret < 0 || (size_t)ret >= sizeof(ccname))
- return ENOMEM;
-
- old_umask = umask(0177);
- tmpfd = mkstemp(ccname + strlen("FILE:"));
- oerrno = errno;
- umask(old_umask);
- if (tmpfd == -1) {
- logit("mkstemp(): %.100s", strerror(oerrno));
- return oerrno;
+#if !defined(HEIMDAL)
+int
+ssh_asprintf_append(char **dsc, const char *fmt, ...) {
+ char *src, *old;
+ va_list ap;
+ int i;
+
+ va_start(ap, fmt);
+ i = vasprintf(&src, fmt, ap);
+ va_end(ap);
+
+ if (i == -1 || src == NULL)
+ return -1;
+
+ old = *dsc;
+
+ i = asprintf(dsc, "%s%s", *dsc, src);
+ if (i == -1 || src == NULL) {
+ free(src);
+ return -1;
+ }
+
+ free(old);
+ free(src);
+
+ return i;
+}
+
+int
+ssh_krb5_expand_template(char **result, const char *template) {
+ char *p_n, *p_o, *r, *tmp_template;
+
+ debug3("%s: called, template = %s", __func__, template);
+ if (template == NULL)
+ return -1;
+
+ tmp_template = p_n = p_o = xstrdup(template);
+ r = xstrdup("");
+
+ while ((p_n = strstr(p_o, "%{")) != NULL) {
+
+ *p_n++ = '\0';
+ if (ssh_asprintf_append(&r, "%s", p_o) == -1)
+ goto cleanup;
+
+ if (strncmp(p_n, "{uid}", 5) == 0 || strncmp(p_n, "{euid}", 6) == 0 ||
+ strncmp(p_n, "{USERID}", 8) == 0) {
+ p_o = strchr(p_n, '}') + 1;
+ if (ssh_asprintf_append(&r, "%d", geteuid()) == -1)
+ goto cleanup;
+ continue;
+ }
+ else if (strncmp(p_n, "{TEMP}", 6) == 0) {
+ p_o = strchr(p_n, '}') + 1;
+ if (ssh_asprintf_append(&r, "/tmp") == -1)
+ goto cleanup;
+ continue;
+ } else {
+ p_o = strchr(p_n, '}') + 1;
+ p_o = '\0';
+ debug("%s: unsupported token %s in %s", __func__, p_n, template);
+ /* unknown token, fallback to the default */
+ goto cleanup;
+ }
}
- if (fchmod(tmpfd,S_IRUSR | S_IWUSR) == -1) {
+ if (ssh_asprintf_append(&r, "%s", p_o) == -1)
+ goto cleanup;
+
+ *result = r;
+ free(tmp_template);
+ return 0;
+
+cleanup:
+ free(r);
+ free(tmp_template);
+ return -1;
+}
+
+krb5_error_code
+ssh_krb5_get_cctemplate(krb5_context ctx, char **ccname) {
+ profile_t p;
+ int ret = 0;
+ char *value = NULL;
+
+ debug3("%s: called", __func__);
+ ret = krb5_get_profile(ctx, &p);
+ if (ret)
+ return ret;
+
+ ret = profile_get_string(p, "libdefaults", "default_ccache_name", NULL, NULL, &value);
+ if (ret || !value)
+ return ret;
+
+ ret = ssh_krb5_expand_template(ccname, value);
+
+ debug3("%s: returning with ccname = %s", __func__, *ccname);
+ return ret;
+}
+
+krb5_error_code
+ssh_krb5_cc_new_unique(krb5_context ctx, krb5_ccache *ccache, int *need_environment) {
+ int tmpfd, ret, oerrno, type_len;
+ char *ccname = NULL;
+ mode_t old_umask;
+ char *type = NULL, *colon = NULL;
+
+ debug3("%s: called", __func__);
+ if (need_environment)
+ *need_environment = 0;
+ ret = ssh_krb5_get_cctemplate(ctx, &ccname);
+ if (ret || !ccname || options.kerberos_unique_ccache) {
+ /* Otherwise, go with the old method */
+ if (ccname)
+ free(ccname);
+ ccname = NULL;
+
+ ret = asprintf(&ccname,
+ "FILE:/tmp/krb5cc_%d_XXXXXXXXXX", geteuid());
+ if (ret < 0)
+ return ENOMEM;
+
+ old_umask = umask(0177);
+ tmpfd = mkstemp(ccname + strlen("FILE:"));
oerrno = errno;
- logit("fchmod(): %.100s", strerror(oerrno));
+ umask(old_umask);
+ if (tmpfd == -1) {
+ logit("mkstemp(): %.100s", strerror(oerrno));
+ return oerrno;
+ }
+
+ if (fchmod(tmpfd,S_IRUSR | S_IWUSR) == -1) {
+ oerrno = errno;
+ logit("fchmod(): %.100s", strerror(oerrno));
+ close(tmpfd);
+ return oerrno;
+ }
+ /* make sure the KRB5CCNAME is set for non-standard location */
+ if (need_environment)
+ *need_environment = 1;
close(tmpfd);
- return oerrno;
}
- close(tmpfd);
- return (krb5_cc_resolve(ctx, ccname, ccache));
+ debug3("%s: setting default ccname to %s", __func__, ccname);
+ /* set the default with already expanded user IDs */
+ ret = krb5_cc_set_default_name(ctx, ccname);
+ if (ret)
+ return ret;
+
+ if ((colon = strstr(ccname, ":")) != NULL) {
+ type_len = colon - ccname;
+ type = malloc((type_len + 1) * sizeof(char));
+ if (type == NULL)
+ return ENOMEM;
+ strncpy(type, ccname, type_len);
+ type[type_len] = 0;
+ } else {
+ type = strdup(ccname);
+ }
+
+ /* If we have a credential cache from krb5.conf, we need to switch
+ * a primary cache for this collection, if it supports that (non-FILE)
+ */
+ if (krb5_cc_support_switch(ctx, type)) {
+ debug3("%s: calling cc_new_unique(%s)", __func__, ccname);
+ ret = krb5_cc_new_unique(ctx, type, NULL, ccache);
+ if (ret)
+ return ret;
+
+ debug3("%s: calling cc_switch()", __func__);
+ return krb5_cc_switch(ctx, *ccache);
+ } else {
+ /* Otherwise, we can not create a unique ccname here (either
+ * it is already unique from above or the type does not support
+ * collections
+ */
+ debug3("%s: calling cc_resolve(%s)", __func__, ccname);
+ return (krb5_cc_resolve(ctx, ccname, ccache));
+ }
}
#endif /* !HEIMDAL */
#endif /* KRB5 */
diff --git a/auth.h b/auth.h
index 29491df9..fdab5040 100644
--- a/auth.h
+++ b/auth.h
@@ -82,6 +82,7 @@ struct Authctxt {
krb5_principal krb5_user;
char *krb5_ticket_file;
char *krb5_ccname;
+ int krb5_set_env;
#endif
struct sshbuf *loginmsg;
@@ -243,6 +244,6 @@ int sys_auth_passwd(struct ssh *, const char *);
#if defined(KRB5) && !defined(HEIMDAL)
#include <krb5.h>
-krb5_error_code ssh_krb5_cc_gen(krb5_context, krb5_ccache *);
+krb5_error_code ssh_krb5_cc_new_unique(krb5_context, krb5_ccache *, int *);
#endif
#endif
diff --git a/gss-serv-krb5.c b/gss-serv-krb5.c
index 795992d9..0623a107 100644
--- a/gss-serv-krb5.c
+++ b/gss-serv-krb5.c
@@ -114,7 +114,7 @@ ssh_gssapi_krb5_userok(ssh_gssapi_client *client, char *name)
/* This writes out any forwarded credentials from the structure populated
* during userauth. Called after we have setuid to the user */
-static void
+static int
ssh_gssapi_krb5_storecreds(ssh_gssapi_client *client)
{
krb5_ccache ccache;
@@ -121,16 +121,17 @@ ssh_gssapi_krb5_storecreds(ssh_gssapi_client *client)
krb5_error_code problem;
krb5_principal princ;
OM_uint32 maj_status, min_status;
- const char *new_ccname, *new_cctype;
+ int len;
const char *errmsg;
+ int set_env = 0;
if (client->creds == NULL) {
debug("No credentials stored");
- return;
+ return 0;
}
if (ssh_gssapi_krb5_init() == 0)
- return;
+ return 0;
#ifdef HEIMDAL
# ifdef HAVE_KRB5_CC_NEW_UNIQUE
@@ -144,14 +145,14 @@ ssh_gssapi_krb5_storecreds(ssh_gssapi_client *client)
krb5_get_err_text(krb_context, problem));
# endif
krb5_free_error_message(krb_context, errmsg);
- return;
+ return 0;
}
#else
- if ((problem = ssh_krb5_cc_gen(krb_context, &ccache))) {
+ if ((problem = ssh_krb5_cc_new_unique(krb_context, &ccache, &set_env)) != 0) {
errmsg = krb5_get_error_message(krb_context, problem);
- logit("ssh_krb5_cc_gen(): %.100s", errmsg);
+ logit("ssh_krb5_cc_new_unique(): %.100s", errmsg);
krb5_free_error_message(krb_context, errmsg);
- return;
+ return 0;
}
#endif /* #ifdef HEIMDAL */
@@ -160,7 +161,7 @@ ssh_gssapi_krb5_storecreds(ssh_gssapi_client *client)
errmsg = krb5_get_error_message(krb_context, problem);
logit("krb5_parse_name(): %.100s", errmsg);
krb5_free_error_message(krb_context, errmsg);
- return;
+ return 0;
}
if ((problem = krb5_cc_initialize(krb_context, ccache, princ))) {
@@ -169,7 +170,7 @@ ssh_gssapi_krb5_storecreds(ssh_gssapi_client *client)
krb5_free_error_message(krb_context, errmsg);
krb5_free_principal(krb_context, princ);
krb5_cc_destroy(krb_context, ccache);
- return;
+ return 0;
}
krb5_free_principal(krb_context, princ);
@@ -178,37 +179,27 @@ ssh_gssapi_krb5_storecreds(ssh_gssapi_client *client)
client->creds, ccache))) {
logit("gss_krb5_copy_ccache() failed");
krb5_cc_destroy(krb_context, ccache);
- return;
+ return 0;
}
- new_cctype = krb5_cc_get_type(krb_context, ccache);
- new_ccname = krb5_cc_get_name(krb_context, ccache);
-
- client->store.envvar = "KRB5CCNAME";
-#ifdef USE_CCAPI
- xasprintf(&client->store.envval, "API:%s", new_ccname);
-#else
- if (new_ccname[0] == ':')
- new_ccname++;
- xasprintf(&client->store.envval, "%s:%s", new_cctype, new_ccname);
- if (strcmp(new_cctype, "DIR") == 0) {
- char *p;
- p = strrchr(client->store.envval, '/');
- if (p)
- *p = '\0';
- }
-#endif
+ if (set_env) {
+ const char *filename = krb5_cc_get_name(krb_context, ccache);
+ client->store.envvar = "KRB5CCNAME";
+ len = strlen(filename) + 6;
+ client->store.envval = xmalloc(len);
+ snprintf(client->store.envval, len, "FILE:%s", filename);
+ }
#ifdef USE_PAM
- if (options.use_pam)
+ if (options.use_pam && set_env)
do_pam_putenv(client->store.envvar, client->store.envval);
#endif
krb5_cc_close(krb_context, ccache);
client->store.data = krb_context;
- return;
+ return set_env;
}
int
diff --git a/gss-serv.c b/gss-serv.c
index 6cae720e..16e55cbc 100644
--- a/gss-serv.c
+++ b/gss-serv.c
@@ -320,13 +320,15 @@ ssh_gssapi_getclient(Gssctxt *ctx, ssh_gssapi_client *client)
}
/* As user */
-void
+int
ssh_gssapi_storecreds(void)
{
if (gssapi_client.mech && gssapi_client.mech->storecreds) {
- (*gssapi_client.mech->storecreds)(&gssapi_client);
+ return (*gssapi_client.mech->storecreds)(&gssapi_client);
} else
debug("ssh_gssapi_storecreds: Not a GSSAPI mechanism");
+
+ return 0;
}
/* This allows GSSAPI methods to do things to the childs environment based
diff --git a/servconf.c b/servconf.c
index cb578658..a6e01df2 100644
--- a/servconf.c
+++ b/servconf.c
@@ -122,6 +122,7 @@ initialize_server_options(ServerOptions *options)
options->kerberos_or_local_passwd = -1;
options->kerberos_ticket_cleanup = -1;
options->kerberos_get_afs_token = -1;
+ options->kerberos_unique_ccache = -1;
options->gss_authentication=-1;
options->gss_keyex = -1;
options->gss_cleanup_creds = -1;
@@ -315,6 +316,8 @@ fill_default_server_options(ServerOptions *options)
options->kerberos_ticket_cleanup = 1;
if (options->kerberos_get_afs_token == -1)
options->kerberos_get_afs_token = 0;
+ if (options->kerberos_unique_ccache == -1)
+ options->kerberos_unique_ccache = 0;
if (options->gss_authentication == -1)
options->gss_authentication = 0;
if (options->gss_keyex == -1)
@@ -447,7 +450,8 @@ typedef enum {
sPermitRootLogin, sLogFacility, sLogLevel,
sRhostsRSAAuthentication, sRSAAuthentication,
sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
- sKerberosGetAFSToken, sChallengeResponseAuthentication,
+ sKerberosGetAFSToken, sKerberosUniqueCCache,
+ sChallengeResponseAuthentication,
sPasswordAuthentication, sKbdInteractiveAuthentication,
sListenAddress, sAddressFamily,
sPrintMotd, sPrintLastLog, sIgnoreRhosts,
@@ -526,11 +530,13 @@ static struct {
#else
{ "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL },
#endif
+ { "kerberosuniqueccache", sKerberosUniqueCCache, SSHCFG_GLOBAL },
#else
{ "kerberosauthentication", sUnsupported, SSHCFG_ALL },
{ "kerberosorlocalpasswd", sUnsupported, SSHCFG_GLOBAL },
{ "kerberosticketcleanup", sUnsupported, SSHCFG_GLOBAL },
{ "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL },
+ { "kerberosuniqueccache", sUnsupported, SSHCFG_GLOBAL },
#endif
{ "kerberostgtpassing", sUnsupported, SSHCFG_GLOBAL },
{ "afstokenpassing", sUnsupported, SSHCFG_GLOBAL },
@@ -1437,6 +1443,10 @@ process_server_config_line(ServerOptions *options, char *line,
intptr = &options->kerberos_get_afs_token;
goto parse_flag;
+ case sKerberosUniqueCCache:
+ intptr = &options->kerberos_unique_ccache;
+ goto parse_flag;
+
case sGssAuthentication:
intptr = &options->gss_authentication;
goto parse_flag;
@@ -2507,6 +2517,7 @@ dump_config(ServerOptions *o)
# ifdef USE_AFS
dump_cfg_fmtint(sKerberosGetAFSToken, o->kerberos_get_afs_token);
# endif
+ dump_cfg_fmtint(sKerberosUniqueCCache, o->kerberos_unique_ccache);
#endif
#ifdef GSSAPI
dump_cfg_fmtint(sGssAuthentication, o->gss_authentication);
diff --git a/servconf.h b/servconf.h
index db8362c6..4fa42d64 100644
--- a/servconf.h
+++ b/servconf.h
@@ -123,6 +123,8 @@ typedef struct {
* file on logout. */
int kerberos_get_afs_token; /* If true, try to get AFS token if
* authenticated with Kerberos. */
+ int kerberos_unique_ccache; /* If true, the acquired ticket will
+ * be stored in per-session ccache */
int gss_authentication; /* If true, permit GSSAPI authentication */
int gss_keyex; /* If true, permit GSSAPI key exchange */
int gss_cleanup_creds; /* If true, destroy cred cache on logout */
diff --git a/session.c b/session.c
index 85df6a27..480a5ead 100644
--- a/session.c
+++ b/session.c
@@ -1033,7 +1033,8 @@ do_setup_env(struct ssh *ssh, Session *s, const char *shell)
/* Allow any GSSAPI methods that we've used to alter
* the childs environment as they see fit
*/
- ssh_gssapi_do_child(&env, &envsize);
+ if (s->authctxt->krb5_set_env)
+ ssh_gssapi_do_child(&env, &envsize);
#endif
/* Set basic environment. */
@@ -1105,7 +1106,7 @@ do_setup_env(struct ssh *ssh, Session *s, const char *shell)
}
#endif
#ifdef KRB5
- if (s->authctxt->krb5_ccname)
+ if (s->authctxt->krb5_ccname && s->authctxt->krb5_set_env)
child_set_env(&env, &envsize, "KRB5CCNAME",
s->authctxt->krb5_ccname);
#endif
diff --git a/ssh-gss.h b/ssh-gss.h
index 6593e422..245178af 100644
--- a/ssh-gss.h
+++ b/ssh-gss.h
@@ -62,7 +62,6 @@
#define KEX_GSS_GEX_SHA1_ID "gss-gex-sha1-"
typedef struct {
- char *filename;
char *envvar;
char *envval;
struct passwd *owner;
@@ -83,7 +82,7 @@ typedef struct ssh_gssapi_mech_struct {
int (*dochild) (ssh_gssapi_client *);
int (*userok) (ssh_gssapi_client *, char *);
int (*localname) (ssh_gssapi_client *, char **);
- void (*storecreds) (ssh_gssapi_client *);
+ int (*storecreds) (ssh_gssapi_client *);
int (*updatecreds) (ssh_gssapi_ccache *, ssh_gssapi_client *);
} ssh_gssapi_mech;
@@ -127,7 +126,7 @@ int ssh_gssapi_userok(char *name);
OM_uint32 ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t);
void ssh_gssapi_do_child(char ***, u_int *);
void ssh_gssapi_cleanup_creds(void);
-void ssh_gssapi_storecreds(void);
+int ssh_gssapi_storecreds(void);
const char *ssh_gssapi_displayname(void);
char *ssh_gssapi_server_mechanisms(void);
diff --git a/sshd.c b/sshd.c
index edbe815c..89514e8a 100644
--- a/sshd.c
+++ b/sshd.c
@@ -2162,7 +2162,7 @@ main(int ac, char **av)
#ifdef GSSAPI
if (options.gss_authentication) {
temporarily_use_uid(authctxt->pw);
- ssh_gssapi_storecreds();
+ authctxt->krb5_set_env = ssh_gssapi_storecreds();
restore_uid();
}
#endif
diff --git a/sshd_config.5 b/sshd_config.5
index c0683d4a..2349f477 100644
--- a/sshd_config.5
+++ b/sshd_config.5
@@ -860,6 +860,14 @@ Specifies whether to automatically destroy the user's ticket cache
file on logout.
The default is
.Cm yes .
+.It Cm KerberosUniqueCCache
+Specifies whether to store the acquired tickets in the per-session credential
+cache under /tmp/ or whether to use per-user credential cache as configured in
+.Pa /etc/krb5.conf .
+The default value
+.Cm no
+can lead to overwriting previous tickets by subseqent connections to the same
+user account.
.It Cm KexAlgorithms
Specifies the available KEX (Key Exchange) algorithms.
Multiple algorithms must be comma-separated.

164
SOURCES/openssh-7.7p1-redhat.patch Normal file
View File

@ -0,0 +1,164 @@
diff -up openssh-7.7p1/ssh_config.redhat openssh-7.7p1/ssh_config
--- openssh-7.7p1/ssh_config.redhat 2018-04-02 07:38:28.000000000 +0200
+++ openssh-7.7p1/ssh_config 2018-07-03 10:44:06.522245125 +0200
@@ -44,3 +44,7 @@
# VisualHostKey no
# ProxyCommand ssh -q -W %h:%p gateway.example.com
# RekeyLimit 1G 1h
+#
+# To modify the system-wide ssh configuration, create a *.conf file under
+# /etc/ssh/ssh_config.d/ which will be automatically included below
+Include /etc/ssh/ssh_config.d/*.conf
diff -up openssh-7.7p1/ssh_config_redhat.redhat openssh-7.7p1/ssh_config_redhat
--- openssh-7.7p1/ssh_config_redhat.redhat 2018-07-03 10:44:06.522245125 +0200
+++ openssh-7.7p1/ssh_config_redhat 2018-07-03 10:44:06.522245125 +0200
@@ -0,0 +1,20 @@
+# Follow system-wide Crypto Policy, if defined:
+Include /etc/crypto-policies/back-ends/openssh.config
+
+# Uncomment this if you want to use .local domain
+# Host *.local
+# CheckHostIP no
+
+Host *
+ GSSAPIAuthentication yes
+
+# If this option is set to yes then remote X11 clients will have full access
+# to the original X11 display. As virtually no X11 client supports the untrusted
+# mode correctly we set this to yes.
+ ForwardX11Trusted yes
+
+# Send locale-related environment variables
+ SendEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES
+ SendEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT
+ SendEnv LC_IDENTIFICATION LC_ALL LANGUAGE
+ SendEnv XMODIFIERS
diff -up openssh-7.7p1/sshd_config.0.redhat openssh-7.7p1/sshd_config.0
--- openssh-7.7p1/sshd_config.0.redhat 2018-04-02 07:39:27.000000000 +0200
+++ openssh-7.7p1/sshd_config.0 2018-07-03 10:44:06.523245133 +0200
@@ -872,9 +872,9 @@ DESCRIPTION
SyslogFacility
Gives the facility code that is used when logging messages from
- sshd(8). The possible values are: DAEMON, USER, AUTH, LOCAL0,
- LOCAL1, LOCAL2, LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7. The
- default is AUTH.
+ sshd(8). The possible values are: DAEMON, USER, AUTH, AUTHPRIV,
+ LOCAL0, LOCAL1, LOCAL2, LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7.
+ The default is AUTH.
TCPKeepAlive
Specifies whether the system should send TCP keepalive messages
diff -up openssh-7.7p1/sshd_config.5.redhat openssh-7.7p1/sshd_config.5
--- openssh-7.7p1/sshd_config.5.redhat 2018-04-02 07:38:28.000000000 +0200
+++ openssh-7.7p1/sshd_config.5 2018-07-03 10:44:06.523245133 +0200
@@ -1461,7 +1461,7 @@ By default no subsystems are defined.
.It Cm SyslogFacility
Gives the facility code that is used when logging messages from
.Xr sshd 8 .
-The possible values are: DAEMON, USER, AUTH, LOCAL0, LOCAL1, LOCAL2,
+The possible values are: DAEMON, USER, AUTH, AUTHPRIV, LOCAL0, LOCAL1, LOCAL2,
LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7.
The default is AUTH.
.It Cm TCPKeepAlive
diff -up openssh-7.7p1/sshd_config.redhat openssh-7.7p1/sshd_config
--- openssh-7.7p1/sshd_config.redhat 2018-04-02 07:38:28.000000000 +0200
+++ openssh-7.7p1/sshd_config 2018-07-03 10:45:16.950782466 +0200
@@ -10,20 +10,34 @@
# possible, but leave them commented. Uncommented options override the
# default value.
+# If you want to change the port on a SELinux system, you have to tell
+# SELinux about this change.
+# semanage port -a -t ssh_port_t -p tcp #PORTNUMBER
+#
#Port 22
#AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::
-#HostKey /etc/ssh/ssh_host_rsa_key
-#HostKey /etc/ssh/ssh_host_ecdsa_key
-#HostKey /etc/ssh/ssh_host_ed25519_key
+HostKey /etc/ssh/ssh_host_rsa_key
+HostKey /etc/ssh/ssh_host_ecdsa_key
+HostKey /etc/ssh/ssh_host_ed25519_key
# Ciphers and keying
#RekeyLimit default none
+# System-wide Crypto policy:
+# This system is following system-wide crypto policy. The changes to
+# Ciphers, MACs, KexAlgoritms and GSSAPIKexAlgorithsm will not have any
+# effect here. They will be overridden by command-line options passed on
+# the server start up.
+# To opt out, uncomment a line with redefinition of CRYPTO_POLICY=
+# variable in /etc/sysconfig/sshd to overwrite the policy.
+# For more information, see manual page for update-crypto-policies(8).
+
# Logging
#SyslogFacility AUTH
+SyslogFacility AUTHPRIV
#LogLevel INFO
# Authentication:
@@ -56,9 +70,11 @@ AuthorizedKeysFile .ssh/authorized_keys
# To disable tunneled clear text passwords, change to no here!
#PasswordAuthentication yes
#PermitEmptyPasswords no
+PasswordAuthentication yes
# Change to no to disable s/key passwords
#ChallengeResponseAuthentication yes
+ChallengeResponseAuthentication no
# Kerberos options
#KerberosAuthentication no
@@ -67,8 +83,8 @@ AuthorizedKeysFile .ssh/authorized_keys
#KerberosGetAFSToken no
# GSSAPI options
-#GSSAPIAuthentication no
-#GSSAPICleanupCredentials yes
+GSSAPIAuthentication yes
+GSSAPICleanupCredentials no
# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
@@ -79,16 +95,20 @@ AuthorizedKeysFile .ssh/authorized_keys
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
-#UsePAM no
+UsePAM yes
#AllowAgentForwarding yes
#AllowTcpForwarding yes
#GatewayPorts no
-#X11Forwarding no
+X11Forwarding yes
#X11DisplayOffset 10
#X11UseLocalhost yes
#PermitTTY yes
-#PrintMotd yes
+
+# It is recommended to use pam_motd in /etc/pam.d/sshd instead of PrintMotd,
+# as it is more configurable and versatile than the built-in version.
+PrintMotd no
+
#PrintLastLog yes
#TCPKeepAlive yes
#PermitUserEnvironment no
@@ -106,6 +126,12 @@ AuthorizedKeysFile .ssh/authorized_keys
# no default banner path
#Banner none
+# Accept locale-related environment variables
+AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES
+AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT
+AcceptEnv LC_IDENTIFICATION LC_ALL LANGUAGE
+AcceptEnv XMODIFIERS
+
# override default of no subsystems
Subsystem sftp /usr/libexec/sftp-server

26
SOURCES/openssh-7.8p1-UsePAM-warning.patch Normal file
View File

@ -0,0 +1,26 @@
diff --git a/sshd.c b/sshd.c
--- a/sshd.c
+++ b/sshd.c
@@ -1701,6 +1701,10 @@ main(int ac, char **av)
parse_server_config(&options, rexeced_flag ? "rexec" : config_file_name,
cfg, NULL);
+ /* 'UsePAM no' is not supported in Fedora */
+ if (! options.use_pam)
+ logit("WARNING: 'UsePAM no' is not supported in Fedora and may cause several problems.");
+
seed_rng();
/* Fill in default values for those options not explicitly set. */
diff --git a/sshd_config b/sshd_config
--- a/sshd_config
+++ b/sshd_config
@@ -101,6 +101,8 @@ GSSAPICleanupCredentials no
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
+# WARNING: 'UsePAM no' is not supported in Fedora and may cause several
+# problems.
UsePAM yes
#AllowAgentForwarding yes

2907
SOURCES/openssh-7.8p1-gsskex.patch Normal file
View File

File diff suppressed because it is too large Load Diff

72
SOURCES/openssh-7.8p1-ip-port-config-parser.patch Normal file
View File

@ -0,0 +1,72 @@
diff -up openssh/misc.c.config openssh/misc.c
--- openssh/misc.c.config 2018-08-22 13:58:54.922807799 +0200
+++ openssh/misc.c 2018-08-22 13:58:55.000808428 +0200
@@ -485,7 +485,7 @@ put_host_port(const char *host, u_short
* The delimiter char, if present, is stored in delim.
* If this is the last field, *cp is set to NULL.
*/
-static char *
+char *
hpdelim2(char **cp, char *delim)
{
char *s, *old;
diff -up openssh/misc.h.config openssh/misc.h
--- openssh/misc.h.config 2018-08-20 07:57:29.000000000 +0200
+++ openssh/misc.h 2018-08-22 13:58:55.001808436 +0200
@@ -54,6 +54,7 @@ int set_rdomain(int, const char *);
int a2port(const char *);
int a2tun(const char *, int *);
char *put_host_port(const char *, u_short);
+char *hpdelim2(char **, char *);
char *hpdelim(char **);
char *cleanhostname(char *);
char *colon(char *);
diff -up openssh/servconf.c.config openssh/servconf.c
--- openssh/servconf.c.config 2018-08-22 13:58:54.989808340 +0200
+++ openssh/servconf.c 2018-08-22 14:18:49.235443937 +0200
@@ -886,7 +886,7 @@ process_permitopen_list(struct ssh *ssh,
{
u_int i;
int port;
- char *host, *arg, *oarg;
+ char *host, *arg, *oarg, ch;
int where = opcode == sPermitOpen ? FORWARD_LOCAL : FORWARD_REMOTE;
const char *what = lookup_opcode_name(opcode);
@@ -904,8 +904,8 @@ process_permitopen_list(struct ssh *ssh,
/* Otherwise treat it as a list of permitted host:port */
for (i = 0; i < num_opens; i++) {
oarg = arg = xstrdup(opens[i]);
- host = hpdelim(&arg);
- if (host == NULL)
+ host = hpdelim2(&arg, &ch);
+ if (host == NULL || ch == '/')
fatal("%s: missing host in %s", __func__, what);
host = cleanhostname(host);
if (arg == NULL || ((port = permitopen_port(arg)) < 0))
@@ -1323,8 +1323,10 @@ process_server_config_line(ServerOptions
port = 0;
p = arg;
} else {
- p = hpdelim(&arg);
- if (p == NULL)
+ char ch;
+ arg2 = NULL;
+ p = hpdelim2(&arg, &ch);
+ if (p == NULL || ch == '/')
fatal("%s line %d: bad address:port usage",
filename, linenum);
p = cleanhostname(p);
@@ -1965,9 +1967,10 @@ process_server_config_line(ServerOptions
*/
xasprintf(&arg2, "*:%s", arg);
} else {
+ char ch;
arg2 = xstrdup(arg);
- p = hpdelim(&arg);
- if (p == NULL) {
+ p = hpdelim2(&arg, &ch);
+ if (p == NULL || ch == '/') {
fatal("%s line %d: missing host in %s",
filename, linenum,
lookup_opcode_name(opcode));

885
SOURCES/openssh-7.8p1-role-mls.patch Normal file
View File

@ -0,0 +1,885 @@
diff -up openssh/auth2.c.role-mls openssh/auth2.c
--- openssh/auth2.c.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/auth2.c 2018-08-22 11:14:56.815430916 +0200
@@ -256,6 +256,9 @@ input_userauth_request(int type, u_int32
Authctxt *authctxt = ssh->authctxt;
Authmethod *m = NULL;
char *user, *service, *method, *style = NULL;
+#ifdef WITH_SELINUX
+ char *role = NULL;
+#endif
int authenticated = 0;
double tstart = monotime_double();
@@ -268,6 +271,11 @@ input_userauth_request(int type, u_int32
debug("userauth-request for user %s service %s method %s", user, service, method);
debug("attempt %d failures %d", authctxt->attempt, authctxt->failures);
+#ifdef WITH_SELINUX
+ if ((role = strchr(user, '/')) != NULL)
+ *role++ = 0;
+#endif
+
if ((style = strchr(user, ':')) != NULL)
*style++ = 0;
@@ -296,8 +304,15 @@ input_userauth_request(int type, u_int32
use_privsep ? " [net]" : "");
authctxt->service = xstrdup(service);
authctxt->style = style ? xstrdup(style) : NULL;
- if (use_privsep)
+#ifdef WITH_SELINUX
+ authctxt->role = role ? xstrdup(role) : NULL;
+#endif
+ if (use_privsep) {
mm_inform_authserv(service, style);
+#ifdef WITH_SELINUX
+ mm_inform_authrole(role);
+#endif
+ }
userauth_banner();
if (auth2_setup_methods_lists(authctxt) != 0)
packet_disconnect("no authentication methods enabled");
diff -up openssh/auth2-gss.c.role-mls openssh/auth2-gss.c
--- openssh/auth2-gss.c.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/auth2-gss.c 2018-08-22 11:15:42.459799171 +0200
@@ -281,6 +281,7 @@ input_gssapi_mic(int type, u_int32_t ple
Authctxt *authctxt = ssh->authctxt;
Gssctxt *gssctxt;
int r, authenticated = 0;
+ char *micuser;
struct sshbuf *b;
gss_buffer_desc mic, gssbuf;
const char *displayname;
@@ -298,7 +299,13 @@ input_gssapi_mic(int type, u_int32_t ple
fatal("%s: sshbuf_new failed", __func__);
mic.value = p;
mic.length = len;
- ssh_gssapi_buildmic(b, authctxt->user, authctxt->service,
+#ifdef WITH_SELINUX
+ if (authctxt->role && (strlen(authctxt->role) > 0))
+ xasprintf(&micuser, "%s/%s", authctxt->user, authctxt->role);
+ else
+#endif
+ micuser = authctxt->user;
+ ssh_gssapi_buildmic(b, micuser, authctxt->service,
"gssapi-with-mic");
if ((gssbuf.value = sshbuf_mutable_ptr(b)) == NULL)
@@ -311,6 +318,8 @@ input_gssapi_mic(int type, u_int32_t ple
logit("GSSAPI MIC check failed");
sshbuf_free(b);
+ if (micuser != authctxt->user)
+ free(micuser);
free(mic.value);
if ((!use_privsep || mm_is_monitor()) &&
diff -up openssh/auth2-hostbased.c.role-mls openssh/auth2-hostbased.c
--- openssh/auth2-hostbased.c.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/auth2-hostbased.c 2018-08-22 11:14:56.816430924 +0200
@@ -123,7 +123,16 @@ userauth_hostbased(struct ssh *ssh)
/* reconstruct packet */
if ((r = sshbuf_put_string(b, session_id2, session_id2_len)) != 0 ||
(r = sshbuf_put_u8(b, SSH2_MSG_USERAUTH_REQUEST)) != 0 ||
+#ifdef WITH_SELINUX
+ (authctxt->role
+ ? ( (r = sshbuf_put_u32(b, strlen(authctxt->user)+strlen(authctxt->role)+1)) != 0 ||
+ (r = sshbuf_put(b, authctxt->user, strlen(authctxt->user))) != 0 ||
+ (r = sshbuf_put_u8(b, '/') != 0) ||
+ (r = sshbuf_put(b, authctxt->role, strlen(authctxt->role))) != 0)
+ : (r = sshbuf_put_cstring(b, authctxt->user)) != 0) ||
+#else
(r = sshbuf_put_cstring(b, authctxt->user)) != 0 ||
+#endif
(r = sshbuf_put_cstring(b, authctxt->service)) != 0 ||
(r = sshbuf_put_cstring(b, "hostbased")) != 0 ||
(r = sshbuf_put_string(b, pkalg, alen)) != 0 ||
diff -up openssh/auth2-pubkey.c.role-mls openssh/auth2-pubkey.c
--- openssh/auth2-pubkey.c.role-mls 2018-08-22 11:14:56.816430924 +0200
+++ openssh/auth2-pubkey.c 2018-08-22 11:17:07.331483958 +0200
@@ -169,9 +169,16 @@ userauth_pubkey(struct ssh *ssh)
goto done;
}
/* reconstruct packet */
- xasprintf(&userstyle, "%s%s%s", authctxt->user,
+ xasprintf(&userstyle, "%s%s%s%s%s", authctxt->user,
authctxt->style ? ":" : "",
- authctxt->style ? authctxt->style : "");
+ authctxt->style ? authctxt->style : "",
+#ifdef WITH_SELINUX
+ authctxt->role ? "/" : "",
+ authctxt->role ? authctxt->role : ""
+#else
+ "", ""
+#endif
+ );
if ((r = sshbuf_put_u8(b, SSH2_MSG_USERAUTH_REQUEST)) != 0 ||
(r = sshbuf_put_cstring(b, userstyle)) != 0 ||
(r = sshbuf_put_cstring(b, authctxt->service)) != 0 ||
diff -up openssh/auth.h.role-mls openssh/auth.h
--- openssh/auth.h.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/auth.h 2018-08-22 11:14:56.816430924 +0200
@@ -65,6 +65,9 @@ struct Authctxt {
char *service;
struct passwd *pw; /* set if 'valid' */
char *style;
+#ifdef WITH_SELINUX
+ char *role;
+#endif
/* Method lists for multiple authentication */
char **auth_methods; /* modified from server config */
diff -up openssh/auth-pam.c.role-mls openssh/auth-pam.c
--- openssh/auth-pam.c.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/auth-pam.c 2018-08-22 11:14:56.816430924 +0200
@@ -1172,7 +1172,7 @@ is_pam_session_open(void)
* during the ssh authentication process.
*/
int
-do_pam_putenv(char *name, char *value)
+do_pam_putenv(char *name, const char *value)
{
int ret = 1;
#ifdef HAVE_PAM_PUTENV
diff -up openssh/auth-pam.h.role-mls openssh/auth-pam.h
--- openssh/auth-pam.h.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/auth-pam.h 2018-08-22 11:14:56.817430932 +0200
@@ -33,7 +33,7 @@ u_int do_pam_account(void);
void do_pam_session(struct ssh *);
void do_pam_setcred(int );
void do_pam_chauthtok(void);
-int do_pam_putenv(char *, char *);
+int do_pam_putenv(char *, const char *);
char ** fetch_pam_environment(void);
char ** fetch_pam_child_environment(void);
void free_pam_environment(char **);
diff -up openssh/configure.ac.role-mls openssh/configure.ac
--- openssh/configure.ac.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/configure.ac 2018-08-22 11:14:56.820430957 +0200
@@ -4241,10 +4241,7 @@ AC_ARG_WITH([selinux],
LIBS="$LIBS -lselinux"
],
AC_MSG_ERROR([SELinux support requires libselinux library]))
- SSHLIBS="$SSHLIBS $LIBSELINUX"
- SSHDLIBS="$SSHDLIBS $LIBSELINUX"
AC_CHECK_FUNCS([getseuserbyname get_default_context_with_level])
- LIBS="$save_LIBS"
fi ]
)
AC_SUBST([SSHLIBS])
diff -up openssh/misc.c.role-mls openssh/misc.c
--- openssh/misc.c.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/misc.c 2018-08-22 11:14:56.817430932 +0200
@@ -542,6 +542,7 @@ char *
colon(char *cp)
{
int flag = 0;
+ int start = 1;
if (*cp == ':') /* Leading colon is part of file name. */
return NULL;
@@ -557,6 +558,13 @@ colon(char *cp)
return (cp);
if (*cp == '/')
return NULL;
+ if (start) {
+ /* Slash on beginning or after dots only denotes file name. */
+ if (*cp == '/')
+ return (0);
+ if (*cp != '.')
+ start = 0;
+ }
}
return NULL;
}
diff -up openssh/monitor.c.role-mls openssh/monitor.c
--- openssh/monitor.c.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/monitor.c 2018-08-22 11:19:56.006844867 +0200
@@ -115,6 +115,9 @@ int mm_answer_sign(int, struct sshbuf *)
int mm_answer_pwnamallow(int, struct sshbuf *);
int mm_answer_auth2_read_banner(int, struct sshbuf *);
int mm_answer_authserv(int, struct sshbuf *);
+#ifdef WITH_SELINUX
+int mm_answer_authrole(int, struct sshbuf *);
+#endif
int mm_answer_authpassword(int, struct sshbuf *);
int mm_answer_bsdauthquery(int, struct sshbuf *);
int mm_answer_bsdauthrespond(int, struct sshbuf *);
@@ -189,6 +192,9 @@ struct mon_table mon_dispatch_proto20[]
{MONITOR_REQ_SIGN, MON_ONCE, mm_answer_sign},
{MONITOR_REQ_PWNAM, MON_ONCE, mm_answer_pwnamallow},
{MONITOR_REQ_AUTHSERV, MON_ONCE, mm_answer_authserv},
+#ifdef WITH_SELINUX
+ {MONITOR_REQ_AUTHROLE, MON_ONCE, mm_answer_authrole},
+#endif
{MONITOR_REQ_AUTH2_READ_BANNER, MON_ONCE, mm_answer_auth2_read_banner},
{MONITOR_REQ_AUTHPASSWORD, MON_AUTH, mm_answer_authpassword},
#ifdef USE_PAM
@@ -796,6 +802,9 @@ mm_answer_pwnamallow(int sock, struct ss
/* Allow service/style information on the auth context */
monitor_permit(mon_dispatch, MONITOR_REQ_AUTHSERV, 1);
+#ifdef WITH_SELINUX
+ monitor_permit(mon_dispatch, MONITOR_REQ_AUTHROLE, 1);
+#endif
monitor_permit(mon_dispatch, MONITOR_REQ_AUTH2_READ_BANNER, 1);
#ifdef USE_PAM
@@ -842,6 +851,26 @@ mm_answer_authserv(int sock, struct sshb
return (0);
}
+#ifdef WITH_SELINUX
+int
+mm_answer_authrole(int sock, struct sshbuf *m)
+{
+ int r;
+ monitor_permit_authentications(1);
+
+ if ((r = sshbuf_get_cstring(m, &authctxt->role, NULL)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
+ debug3("%s: role=%s", __func__, authctxt->role);
+
+ if (strlen(authctxt->role) == 0) {
+ free(authctxt->role);
+ authctxt->role = NULL;
+ }
+
+ return (0);
+}
+#endif
+
int
mm_answer_authpassword(int sock, struct sshbuf *m)
{
@@ -1218,7 +1247,7 @@ monitor_valid_userblob(u_char *data, u_i
{
struct sshbuf *b;
const u_char *p;
- char *userstyle, *cp;
+ char *userstyle, *s, *cp;
size_t len;
u_char type;
int r, fail = 0;
@@ -1251,6 +1280,8 @@ monitor_valid_userblob(u_char *data, u_i
fail++;
if ((r = sshbuf_get_cstring(b, &cp, NULL)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
+ if ((s = strchr(cp, '/')) != NULL)
+ *s = '\0';
xasprintf(&userstyle, "%s%s%s", authctxt->user,
authctxt->style ? ":" : "",
authctxt->style ? authctxt->style : "");
@@ -1286,7 +1317,7 @@ monitor_valid_hostbasedblob(u_char *data
{
struct sshbuf *b;
const u_char *p;
- char *cp, *userstyle;
+ char *cp, *s, *userstyle;
size_t len;
int r, fail = 0;
u_char type;
@@ -1308,6 +1339,8 @@ monitor_valid_hostbasedblob(u_char *data
fail++;
if ((r = sshbuf_get_cstring(b, &cp, NULL)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
+ if ((s = strchr(p, '/')) != NULL)
+ *s = '\0';
xasprintf(&userstyle, "%s%s%s", authctxt->user,
authctxt->style ? ":" : "",
authctxt->style ? authctxt->style : "");
diff -up openssh/monitor.h.role-mls openssh/monitor.h
--- openssh/monitor.h.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/monitor.h 2018-08-22 11:14:56.818430941 +0200
@@ -55,6 +55,10 @@ enum monitor_reqtype {
MONITOR_REQ_GSSCHECKMIC = 48, MONITOR_ANS_GSSCHECKMIC = 49,
MONITOR_REQ_TERM = 50,
+#ifdef WITH_SELINUX
+ MONITOR_REQ_AUTHROLE = 80,
+#endif
+
MONITOR_REQ_PAM_START = 100,
MONITOR_REQ_PAM_ACCOUNT = 102, MONITOR_ANS_PAM_ACCOUNT = 103,
MONITOR_REQ_PAM_INIT_CTX = 104, MONITOR_ANS_PAM_INIT_CTX = 105,
diff -up openssh/monitor_wrap.c.role-mls openssh/monitor_wrap.c
--- openssh/monitor_wrap.c.role-mls 2018-08-22 11:14:56.818430941 +0200
+++ openssh/monitor_wrap.c 2018-08-22 11:21:47.938747968 +0200
@@ -390,6 +390,27 @@ mm_inform_authserv(char *service, char *
sshbuf_free(m);
}
+/* Inform the privileged process about role */
+
+#ifdef WITH_SELINUX
+void
+mm_inform_authrole(char *role)
+{
+ int r;
+ struct sshbuf *m;
+
+ debug3("%s entering", __func__);
+
+ if ((m = sshbuf_new()) == NULL)
+ fatal("%s: sshbuf_new failed", __func__);
+ if ((r = sshbuf_put_cstring(m, role ? role : "")) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHROLE, m);
+
+ sshbuf_free(m);
+}
+#endif
+
/* Do the password authentication */
int
mm_auth_password(struct ssh *ssh, char *password)
diff -up openssh/monitor_wrap.h.role-mls openssh/monitor_wrap.h
--- openssh/monitor_wrap.h.role-mls 2018-08-22 11:14:56.818430941 +0200
+++ openssh/monitor_wrap.h 2018-08-22 11:22:10.439929513 +0200
@@ -44,6 +44,9 @@ DH *mm_choose_dh(int, int, int);
int mm_sshkey_sign(struct sshkey *, u_char **, size_t *, const u_char *, size_t,
const char *, u_int compat);
void mm_inform_authserv(char *, char *);
+#ifdef WITH_SELINUX
+void mm_inform_authrole(char *);
+#endif
struct passwd *mm_getpwnamallow(const char *);
char *mm_auth2_read_banner(void);
int mm_auth_password(struct ssh *, char *);
diff -up openssh/openbsd-compat/Makefile.in.role-mls openssh/openbsd-compat/Makefile.in
--- openssh/openbsd-compat/Makefile.in.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/openbsd-compat/Makefile.in 2018-08-22 11:14:56.819430949 +0200
@@ -92,7 +92,8 @@ PORTS= port-aix.o \
port-linux.o \
port-solaris.o \
port-net.o \
- port-uw.o
+ port-uw.o \
+ port-linux-sshd.o
.c.o:
$(CC) $(CFLAGS) $(CPPFLAGS) -c $<
diff -up openssh/openbsd-compat/port-linux.c.role-mls openssh/openbsd-compat/port-linux.c
--- openssh/openbsd-compat/port-linux.c.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/openbsd-compat/port-linux.c 2018-08-22 11:14:56.819430949 +0200
@@ -100,37 +100,6 @@ ssh_selinux_getctxbyname(char *pwname)
return sc;
}
-/* Set the execution context to the default for the specified user */
-void
-ssh_selinux_setup_exec_context(char *pwname)
-{
- security_context_t user_ctx = NULL;
-
- if (!ssh_selinux_enabled())
- return;
-
- debug3("%s: setting execution context", __func__);
-
- user_ctx = ssh_selinux_getctxbyname(pwname);
- if (setexeccon(user_ctx) != 0) {
- switch (security_getenforce()) {
- case -1:
- fatal("%s: security_getenforce() failed", __func__);
- case 0:
- error("%s: Failed to set SELinux execution "
- "context for %s", __func__, pwname);
- break;
- default:
- fatal("%s: Failed to set SELinux execution context "
- "for %s (in enforcing mode)", __func__, pwname);
- }
- }
- if (user_ctx != NULL)
- freecon(user_ctx);
-
- debug3("%s: done", __func__);
-}
-
/* Set the TTY context for the specified user */
void
ssh_selinux_setup_pty(char *pwname, const char *tty)
@@ -145,7 +114,11 @@ ssh_selinux_setup_pty(char *pwname, cons
debug3("%s: setting TTY context on %s", __func__, tty);
- user_ctx = ssh_selinux_getctxbyname(pwname);
+ if (getexeccon(&user_ctx) != 0) {
+ error("%s: getexeccon: %s", __func__, strerror(errno));
+ goto out;
+ }
+
/* XXX: should these calls fatal() upon failure in enforcing mode? */
diff -up openssh/openbsd-compat/port-linux.h.role-mls openssh/openbsd-compat/port-linux.h
--- openssh/openbsd-compat/port-linux.h.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/openbsd-compat/port-linux.h 2018-08-22 11:14:56.819430949 +0200
@@ -20,9 +20,10 @@
#ifdef WITH_SELINUX
int ssh_selinux_enabled(void);
void ssh_selinux_setup_pty(char *, const char *);
-void ssh_selinux_setup_exec_context(char *);
void ssh_selinux_change_context(const char *);
void ssh_selinux_setfscreatecon(const char *);
+
+void sshd_selinux_setup_exec_context(char *);
#endif
#ifdef LINUX_OOM_ADJUST
diff -up openssh/openbsd-compat/port-linux-sshd.c.role-mls openssh/openbsd-compat/port-linux-sshd.c
--- openssh/openbsd-compat/port-linux-sshd.c.role-mls 2018-08-22 11:14:56.819430949 +0200
+++ openssh/openbsd-compat/port-linux-sshd.c 2018-08-22 11:14:56.819430949 +0200
@@ -0,0 +1,425 @@
+/*
+ * Copyright (c) 2005 Daniel Walsh <dwalsh@redhat.com>
+ * Copyright (c) 2014 Petr Lautrbach <plautrba@redhat.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * Linux-specific portability code - just SELinux support for sshd at present
+ */
+
+#include "includes.h"
+
+#if defined(WITH_SELINUX) || defined(LINUX_OOM_ADJUST)
+#include <errno.h>
+#include <stdarg.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "log.h"
+#include "xmalloc.h"
+#include "misc.h" /* servconf.h needs misc.h for struct ForwardOptions */
+#include "servconf.h"
+#include "port-linux.h"
+#include "sshkey.h"
+#include "hostfile.h"
+#include "auth.h"
+
+#ifdef WITH_SELINUX
+#include <selinux/selinux.h>
+#include <selinux/context.h>
+#include <selinux/get_context_list.h>
+#include <selinux/get_default_type.h>
+
+#ifdef HAVE_LINUX_AUDIT
+#include <libaudit.h>
+#include <unistd.h>
+#endif
+
+extern ServerOptions options;
+extern Authctxt *the_authctxt;
+extern int inetd_flag;
+extern int rexeced_flag;
+
+/* Send audit message */
+static int
+sshd_selinux_send_audit_message(int success, security_context_t default_context,
+ security_context_t selected_context)
+{
+ int rc=0;
+#ifdef HAVE_LINUX_AUDIT
+ char *msg = NULL;
+ int audit_fd = audit_open();
+ security_context_t default_raw=NULL;
+ security_context_t selected_raw=NULL;
+ rc = -1;
+ if (audit_fd < 0) {
+ if (errno == EINVAL || errno == EPROTONOSUPPORT ||
+ errno == EAFNOSUPPORT)
+ return 0; /* No audit support in kernel */
+ error("Error connecting to audit system.");
+ return rc;
+ }
+ if (selinux_trans_to_raw_context(default_context, &default_raw) < 0) {
+ error("Error translating default context.");
+ default_raw = NULL;
+ }
+ if (selinux_trans_to_raw_context(selected_context, &selected_raw) < 0) {
+ error("Error translating selected context.");
+ selected_raw = NULL;
+ }
+ if (asprintf(&msg, "sshd: default-context=%s selected-context=%s",
+ default_raw ? default_raw : (default_context ? default_context: "?"),
+ selected_context ? selected_raw : (selected_context ? selected_context :"?")) < 0) {
+ error("Error allocating memory.");
+ goto out;
+ }
+ if (audit_log_user_message(audit_fd, AUDIT_USER_ROLE_CHANGE,
+ msg, NULL, NULL, NULL, success) <= 0) {
+ error("Error sending audit message.");
+ goto out;
+ }
+ rc = 0;
+ out:
+ free(msg);
+ freecon(default_raw);
+ freecon(selected_raw);
+ close(audit_fd);
+#endif
+ return rc;
+}
+
+static int
+mls_range_allowed(security_context_t src, security_context_t dst)
+{
+ struct av_decision avd;
+ int retval;
+ access_vector_t bit;
+ security_class_t class;
+
+ debug("%s: src:%s dst:%s", __func__, src, dst);
+ class = string_to_security_class("context");
+ if (!class) {
+ error("string_to_security_class failed to translate security class context");
+ return 1;
+ }
+ bit = string_to_av_perm(class, "contains");
+ if (!bit) {
+ error("string_to_av_perm failed to translate av perm contains");
+ return 1;
+ }
+ retval = security_compute_av(src, dst, class, bit, &avd);
+ if (retval || ((bit & avd.allowed) != bit))
+ return 0;
+
+ return 1;
+}
+
+static int
+get_user_context(const char *sename, const char *role, const char *lvl,
+ security_context_t *sc) {
+#ifdef HAVE_GET_DEFAULT_CONTEXT_WITH_LEVEL
+ if (lvl == NULL || lvl[0] == '\0' || get_default_context_with_level(sename, lvl, NULL, sc) != 0) {
+ /* User may have requested a level completely outside of his
+ allowed range. We get a context just for auditing as the
+ range check below will certainly fail for default context. */
+#endif
+ if (get_default_context(sename, NULL, sc) != 0) {
+ *sc = NULL;
+ return -1;
+ }
+#ifdef HAVE_GET_DEFAULT_CONTEXT_WITH_LEVEL
+ }
+#endif
+ if (role != NULL && role[0]) {
+ context_t con;
+ char *type=NULL;
+ if (get_default_type(role, &type) != 0) {
+ error("get_default_type: failed to get default type for '%s'",
+ role);
+ goto out;
+ }
+ con = context_new(*sc);
+ if (!con) {
+ goto out;
+ }
+ context_role_set(con, role);
+ context_type_set(con, type);
+ freecon(*sc);
+ *sc = strdup(context_str(con));
+ context_free(con);
+ if (!*sc)
+ return -1;
+ }
+#ifdef HAVE_GET_DEFAULT_CONTEXT_WITH_LEVEL
+ if (lvl != NULL && lvl[0]) {
+ /* verify that the requested range is obtained */
+ context_t con;
+ security_context_t obtained_raw;
+ security_context_t requested_raw;
+ con = context_new(*sc);
+ if (!con) {
+ goto out;
+ }
+ context_range_set(con, lvl);
+ if (selinux_trans_to_raw_context(*sc, &obtained_raw) < 0) {
+ context_free(con);
+ goto out;
+ }
+ if (selinux_trans_to_raw_context(context_str(con), &requested_raw) < 0) {
+ freecon(obtained_raw);
+ context_free(con);
+ goto out;
+ }
+
+ debug("get_user_context: obtained context '%s' requested context '%s'",
+ obtained_raw, requested_raw);
+ if (strcmp(obtained_raw, requested_raw)) {
+ /* set the context to the real requested one but fail */
+ freecon(requested_raw);
+ freecon(obtained_raw);
+ freecon(*sc);
+ *sc = strdup(context_str(con));
+ context_free(con);
+ return -1;
+ }
+ freecon(requested_raw);
+ freecon(obtained_raw);
+ context_free(con);
+ }
+#endif
+ return 0;
+ out:
+ freecon(*sc);
+ *sc = NULL;
+ return -1;
+}
+
+static void
+ssh_selinux_get_role_level(char **role, const char **level)
+{
+ *role = NULL;
+ *level = NULL;
+ if (the_authctxt) {
+ if (the_authctxt->role != NULL) {
+ char *slash;
+ *role = xstrdup(the_authctxt->role);
+ if ((slash = strchr(*role, '/')) != NULL) {
+ *slash = '\0';
+ *level = slash + 1;
+ }
+ }
+ }
+}
+
+/* Return the default security context for the given username */
+static int
+sshd_selinux_getctxbyname(char *pwname,
+ security_context_t *default_sc, security_context_t *user_sc)
+{
+ char *sename, *lvl;
+ char *role;
+ const char *reqlvl;
+ int r = 0;
+ context_t con = NULL;
+
+ ssh_selinux_get_role_level(&role, &reqlvl);
+
+#ifdef HAVE_GETSEUSERBYNAME
+ if ((r=getseuserbyname(pwname, &sename, &lvl)) != 0) {
+ sename = NULL;
+ lvl = NULL;
+ }
+#else
+ sename = pwname;
+ lvl = "";
+#endif
+
+ if (r == 0) {
+#ifdef HAVE_GET_DEFAULT_CONTEXT_WITH_LEVEL
+ r = get_default_context_with_level(sename, lvl, NULL, default_sc);
+#else
+ r = get_default_context(sename, NULL, default_sc);
+#endif
+ }
+
+ if (r == 0) {
+ /* If launched from xinetd, we must use current level */
+ if (inetd_flag && !rexeced_flag) {
+ security_context_t sshdsc=NULL;
+
+ if (getcon_raw(&sshdsc) < 0)
+ fatal("failed to allocate security context");
+
+ if ((con=context_new(sshdsc)) == NULL)
+ fatal("failed to allocate selinux context");
+ reqlvl = context_range_get(con);
+ freecon(sshdsc);
+ if (reqlvl !=NULL && lvl != NULL && strcmp(reqlvl, lvl) == 0)
+ /* we actually don't change level */
+ reqlvl = "";
+
+ debug("%s: current connection level '%s'", __func__, reqlvl);
+
+ }
+
+ if ((reqlvl != NULL && reqlvl[0]) || (role != NULL && role[0])) {
+ r = get_user_context(sename, role, reqlvl, user_sc);
+
+ if (r == 0 && reqlvl != NULL && reqlvl[0]) {
+ security_context_t default_level_sc = *default_sc;
+ if (role != NULL && role[0]) {
+ if (get_user_context(sename, role, lvl, &default_level_sc) < 0)
+ default_level_sc = *default_sc;
+ }
+ /* verify that the requested range is contained in the user range */
+ if (mls_range_allowed(default_level_sc, *user_sc)) {
+ logit("permit MLS level %s (user range %s)", reqlvl, lvl);
+ } else {
+ r = -1;
+ error("deny MLS level %s (user range %s)", reqlvl, lvl);
+ }
+ if (default_level_sc != *default_sc)
+ freecon(default_level_sc);
+ }
+ } else {
+ *user_sc = *default_sc;
+ }
+ }
+ if (r != 0) {
+ error("%s: Failed to get default SELinux security "
+ "context for %s", __func__, pwname);
+ }
+
+#ifdef HAVE_GETSEUSERBYNAME
+ free(sename);
+ free(lvl);
+#endif
+
+ if (role != NULL)
+ free(role);
+ if (con)
+ context_free(con);
+
+ return (r);
+}
+
+/* Setup environment variables for pam_selinux */
+static int
+sshd_selinux_setup_pam_variables(void)
+{
+ const char *reqlvl;
+ char *role;
+ char *use_current;
+ int rv;
+
+ debug3("%s: setting execution context", __func__);
+
+ ssh_selinux_get_role_level(&role, &reqlvl);
+
+ rv = do_pam_putenv("SELINUX_ROLE_REQUESTED", role ? role : "");
+
+ if (inetd_flag && !rexeced_flag) {
+ use_current = "1";
+ } else {
+ use_current = "";
+ rv = rv || do_pam_putenv("SELINUX_LEVEL_REQUESTED", reqlvl ? reqlvl: "");
+ }
+
+ rv = rv || do_pam_putenv("SELINUX_USE_CURRENT_RANGE", use_current);
+
+ if (role != NULL)
+ free(role);
+
+ return rv;
+}
+
+/* Set the execution context to the default for the specified user */
+void
+sshd_selinux_setup_exec_context(char *pwname)
+{
+ security_context_t user_ctx = NULL;
+ int r = 0;
+ security_context_t default_ctx = NULL;
+
+ if (!ssh_selinux_enabled())
+ return;
+
+ if (options.use_pam) {
+ /* do not compute context, just setup environment for pam_selinux */
+ if (sshd_selinux_setup_pam_variables()) {
+ switch (security_getenforce()) {
+ case -1:
+ fatal("%s: security_getenforce() failed", __func__);
+ case 0:
+ error("%s: SELinux PAM variable setup failure. Continuing in permissive mode.",
+ __func__);
+ break;
+ default:
+ fatal("%s: SELinux PAM variable setup failure. Aborting connection.",
+ __func__);
+ }
+ }
+ return;
+ }
+
+ debug3("%s: setting execution context", __func__);
+
+ r = sshd_selinux_getctxbyname(pwname, &default_ctx, &user_ctx);
+ if (r >= 0) {
+ r = setexeccon(user_ctx);
+ if (r < 0) {
+ error("%s: Failed to set SELinux execution context %s for %s",
+ __func__, user_ctx, pwname);
+ }
+#ifdef HAVE_SETKEYCREATECON
+ else if (setkeycreatecon(user_ctx) < 0) {
+ error("%s: Failed to set SELinux keyring creation context %s for %s",
+ __func__, user_ctx, pwname);
+ }
+#endif
+ }
+ if (user_ctx == NULL) {
+ user_ctx = default_ctx;
+ }
+ if (r < 0 || user_ctx != default_ctx) {
+ /* audit just the case when user changed a role or there was
+ a failure */
+ sshd_selinux_send_audit_message(r >= 0, default_ctx, user_ctx);
+ }
+ if (r < 0) {
+ switch (security_getenforce()) {
+ case -1:
+ fatal("%s: security_getenforce() failed", __func__);
+ case 0:
+ error("%s: SELinux failure. Continuing in permissive mode.",
+ __func__);
+ break;
+ default:
+ fatal("%s: SELinux failure. Aborting connection.",
+ __func__);
+ }
+ }
+ if (user_ctx != NULL && user_ctx != default_ctx)
+ freecon(user_ctx);
+ if (default_ctx != NULL)
+ freecon(default_ctx);
+
+ debug3("%s: done", __func__);
+}
+
+#endif
+#endif
+
diff -up openssh/platform.c.role-mls openssh/platform.c
--- openssh/platform.c.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/platform.c 2018-08-22 11:14:56.819430949 +0200
@@ -183,7 +183,7 @@ platform_setusercontext_post_groups(stru
}
#endif /* HAVE_SETPCRED */
#ifdef WITH_SELINUX
- ssh_selinux_setup_exec_context(pw->pw_name);
+ sshd_selinux_setup_exec_context(pw->pw_name);
#endif
}
diff -up openssh/sshd.c.role-mls openssh/sshd.c
--- openssh/sshd.c.role-mls 2018-08-20 07:57:29.000000000 +0200
+++ openssh/sshd.c 2018-08-22 11:14:56.820430957 +0200
@@ -2186,6 +2186,9 @@ main(int ac, char **av)
restore_uid();
}
#endif
+#ifdef WITH_SELINUX
+ sshd_selinux_setup_exec_context(authctxt->pw->pw_name);
+#endif
#ifdef USE_PAM
if (options.use_pam) {
do_pam_setcred(1);

16
SOURCES/openssh-7.8p1-scp-ipv6.patch Normal file
View File

@ -0,0 +1,16 @@
diff --git a/scp.c b/scp.c
index 60682c68..9344806e 100644
--- a/scp.c
+++ b/scp.c
@@ -714,7 +714,9 @@ toremote(int argc, char **argv)
addargs(&alist, "%s", host);
addargs(&alist, "%s", cmd);
addargs(&alist, "%s", src);
- addargs(&alist, "%s%s%s:%s",
+ addargs(&alist,
+ /* IPv6 address needs to be enclosed with sqare brackets */
+ strchr(host, ':') != NULL ? "%s%s[%s]:%s" : "%s%s%s:%s",
tuser ? tuser : "", tuser ? "@" : "",
thost, targ);
if (do_local_cmd(&alist) != 0)

14
SOURCES/openssh-7.8p1.tar.gz.asc Normal file
View File

@ -0,0 +1,14 @@
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iQHDBAABCgAdFiEEWcIRjtIG2SfmZ+vj0+X1a22SDTAFAlt+Xa8ACgkQ0+X1a22S
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Lo6wzsrgv2kDJMqwciT/D/Zb3ocHnCrq1Isnz/Ug2lW58LMk7Y1HisPteZFQ/pkC
xKeO+K1RkaRUSCrB5iToqF+7i8eRNVROYmkKLgKcMrC0WYEjnbEoFdr4bktAS9QM
BS6aIsh2cyg2H0FjDKmYvcKOUf0IgA==
=ZiYm
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62
SOURCES/openssh-7.9p1-disable-sha1.patch Normal file
View File

@ -0,0 +1,62 @@
diff --git a/monitor.c b/monitor.c
index 12b33e7..a1c3c97 100644
--- a/monitor.c
+++ b/monitor.c
@@ -875,6 +875,34 @@ mm_answer_bsdauthrespond(int sock, struct sshbuf *m)
}
#endif
+/*
+ * Check that the key type appears in the supplied pattern list, ignoring
+ * mismastches in the signature algorithm. (Signature algorithm checks are
+ * performed in the unprivileged authentication code).
+ * Returns 1 on success, 0 otherwise.
+ */
+static int
+key_base_type_match(const struct sshkey *key, const char *list)
+{
+ char *s, *l, *ol = xstrdup(list);
+ int found = 0;
+
+ l = ol;
+ for ((s = strsep(&l, ",")); s && *s != '\0'; (s = strsep(&l, ","))) {
+ if (sshkey_type_from_name(s) == key->type) {
+ found = 1;
+ break;
+ }
+ }
+ if (!found) {
+ debug("key type %s does not appear in list %s",
+ sshkey_ssh_name(key), list);
+ }
+
+ free(ol);
+ return found;
+}
+
int
mm_answer_keyallowed(int sock, struct sshbuf *m)
{
@@ -909,8 +937,8 @@ mm_answer_keyallowed(int sock, struct sshbuf *m)
break;
if (auth2_key_already_used(authctxt, key))
break;
- if (match_pattern_list(sshkey_ssh_name(key),
- options.pubkey_key_types, 0) != 1)
+ if (!key_base_type_match(key,
+ options.pubkey_key_types))
break;
allowed = user_key_allowed(ssh, authctxt->pw, key,
pubkey_auth_attempt, &opts);
@@ -921,8 +949,8 @@ mm_answer_keyallowed(int sock, struct sshbuf *m)
break;
if (auth2_key_already_used(authctxt, key))
break;
- if (match_pattern_list(sshkey_ssh_name(key),
- options.hostbased_key_types, 0) != 1)
+ if (!key_base_type_match(key,
+ options.hostbased_key_types))
break;
allowed = hostbased_key_allowed(authctxt->pw,
cuser, chost, key);

150
SOURCES/openssh-7.9p1-gsskex-method.patch Normal file
View File

@ -0,0 +1,150 @@
From bc74944ce7a2eabd228d47051f277ce108914c96 Mon Sep 17 00:00:00 2001
From: Jakub Jelen <jjelen@redhat.com>
Date: Tue, 16 Oct 2018 16:44:40 +0200
Subject: [PATCH] Unbreak authentication using gssapi-keyex (#1625366)
---
auth2-gss.c | 6 +++---
gss-serv.c | 4 +++-
monitor.c | 13 ++++++++++---
monitor_wrap.c | 4 +++-
monitor_wrap.h | 2 +-
ssh-gss.h | 2 +-
6 files changed, 21 insertions(+), 10 deletions(-)
diff --git a/auth2-gss.c b/auth2-gss.c
index 3f2ad21d..a61ac089 100644
--- a/auth2-gss.c
+++ b/auth2-gss.c
@@ -84,7 +84,7 @@ userauth_gsskeyex(Authctxt *authctxt)
if (!GSS_ERROR(PRIVSEP(ssh_gssapi_checkmic(gss_kex_context,
&gssbuf, &mic))))
authenticated = PRIVSEP(ssh_gssapi_userok(authctxt->user,
- authctxt->pw));
+ authctxt->pw, 1));
sshbuf_free(b);
free(mic.value);
@@ -299,7 +299,7 @@ input_gssapi_exchange_complete(int type, u_int32_t plen, struct ssh *ssh)
fatal("%s: %s", __func__, ssh_err(r));
authenticated = PRIVSEP(ssh_gssapi_userok(authctxt->user,
- authctxt->pw));
+ authctxt->pw, 1));
if ((!use_privsep || mm_is_monitor()) &&
(displayname = ssh_gssapi_displayname()) != NULL)
@@ -347,7 +347,7 @@ input_gssapi_mic(int type, u_int32_t plen, struct ssh *ssh)
if (!GSS_ERROR(PRIVSEP(ssh_gssapi_checkmic(gssctxt, &gssbuf, &mic))))
authenticated =
- PRIVSEP(ssh_gssapi_userok(authctxt->user, authctxt->pw));
+ PRIVSEP(ssh_gssapi_userok(authctxt->user, authctxt->pw, 0));
else
logit("GSSAPI MIC check failed");
diff --git a/gss-serv.c b/gss-serv.c
index 786ac95c..87de2baa 100644
--- a/gss-serv.c
+++ b/gss-serv.c
@@ -493,10 +493,12 @@ verify_authentication_indicators(Gssctxt *gssctxt)
/* Privileged */
int
-ssh_gssapi_userok(char *user, struct passwd *pw)
+ssh_gssapi_userok(char *user, struct passwd *pw, int kex)
{
OM_uint32 lmin;
+ (void) kex; /* used in privilege separation */
+
if (gssapi_client.exportedname.length == 0 ||
gssapi_client.exportedname.value == NULL) {
debug("No suitable client data");
diff --git a/monitor.c b/monitor.c
index 9bbe8cc4..7b1903af 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1877,14 +1877,17 @@ mm_answer_gss_checkmic(int sock, struct sshbuf *m)
int
mm_answer_gss_userok(int sock, struct sshbuf *m)
{
- int r, authenticated;
+ int r, authenticated, kex;
const char *displayname;
if (!options.gss_authentication && !options.gss_keyex)
fatal("%s: GSSAPI authentication not enabled", __func__);
+ if ((r = sshbuf_get_u32(m, &kex)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
+
authenticated = authctxt->valid &&
- ssh_gssapi_userok(authctxt->user, authctxt->pw);
+ ssh_gssapi_userok(authctxt->user, authctxt->pw, kex);
sshbuf_reset(m);
if ((r = sshbuf_put_u32(m, authenticated)) != 0)
@@ -1893,7 +1896,11 @@ mm_answer_gss_userok(int sock, struct sshbuf *m)
debug3("%s: sending result %d", __func__, authenticated);
mm_request_send(sock, MONITOR_ANS_GSSUSEROK, m);
- auth_method = "gssapi-with-mic";
+ if (kex) {
+ auth_method = "gssapi-keyex";
+ } else {
+ auth_method = "gssapi-with-mic";
+ }
if ((displayname = ssh_gssapi_displayname()) != NULL)
auth2_record_info(authctxt, "%s", displayname);
diff --git a/monitor_wrap.c b/monitor_wrap.c
index fb52a530..508d926d 100644
--- a/monitor_wrap.c
+++ b/monitor_wrap.c
@@ -984,13 +984,15 @@ mm_ssh_gssapi_checkmic(Gssctxt *ctx, gss_buffer_t gssbuf, gss_buffer_t gssmic)
}
int
-mm_ssh_gssapi_userok(char *user, struct passwd *pw)
+mm_ssh_gssapi_userok(char *user, struct passwd *pw, int kex)
{
struct sshbuf *m;
int r, authenticated = 0;
if ((m = sshbuf_new()) == NULL)
fatal("%s: sshbuf_new failed", __func__);
+ if ((r = sshbuf_put_u32(m, kex)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSUSEROK, m);
mm_request_receive_expect(pmonitor->m_recvfd,
diff --git a/monitor_wrap.h b/monitor_wrap.h
index 494760dd..5eba5ecc 100644
--- a/monitor_wrap.h
+++ b/monitor_wrap.h
@@ -60,7 +60,7 @@ int mm_sshkey_verify(const struct sshkey *, const u_char *, size_t,
OM_uint32 mm_ssh_gssapi_server_ctx(Gssctxt **, gss_OID);
OM_uint32 mm_ssh_gssapi_accept_ctx(Gssctxt *,
gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *);
-int mm_ssh_gssapi_userok(char *user, struct passwd *);
+int mm_ssh_gssapi_userok(char *user, struct passwd *, int kex);
OM_uint32 mm_ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t);
OM_uint32 mm_ssh_gssapi_sign(Gssctxt *, gss_buffer_t, gss_buffer_t);
int mm_ssh_gssapi_update_creds(ssh_gssapi_ccache *);
diff --git a/ssh-gss.h b/ssh-gss.h
index 39b6ce69..98262837 100644
--- a/ssh-gss.h
+++ b/ssh-gss.h
@@ -162,7 +162,7 @@ gss_OID ssh_gssapi_id_kex(Gssctxt *, char *, int);
int ssh_gssapi_server_check_mech(Gssctxt **,gss_OID, const char *,
const char *);
OM_uint32 ssh_gssapi_server_ctx(Gssctxt **, gss_OID);
-int ssh_gssapi_userok(char *name, struct passwd *);
+int ssh_gssapi_userok(char *name, struct passwd *, int kex);
OM_uint32 ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t);
void ssh_gssapi_do_child(char ***, u_int *);
void ssh_gssapi_cleanup_creds(void);
--
2.17.2

37
SOURCES/pam_ssh_agent-rmheaders Normal file
View File

@ -0,0 +1,37 @@
authfd.c
authfd.h
atomicio.c
atomicio.h
bufaux.c
bufbn.c
buffer.h
buffer.c
cleanup.c
cipher.h
compat.h
defines.h
entropy.c
entropy.h
fatal.c
includes.h
kex.h
key.c
key.h
log.c
log.h
match.h
misc.c
misc.h
pathnames.h
platform.h
rsa.h
ssh-dss.c
ssh-rsa.c
ssh.h
ssh2.h
uidswap.c
uidswap.h
uuencode.c
uuencode.h
xmalloc.c
xmalloc.h

939
SOURCES/pam_ssh_agent_auth-0.10.2-compat.patch Normal file
View File

@ -0,0 +1,939 @@
diff -up openssh/pam_ssh_agent_auth-0.10.3/get_command_line.c.psaa-compat openssh/pam_ssh_agent_auth-0.10.3/get_command_line.c
--- openssh/pam_ssh_agent_auth-0.10.3/get_command_line.c.psaa-compat 2016-11-13 04:24:32.000000000 +0100
+++ openssh/pam_ssh_agent_auth-0.10.3/get_command_line.c 2018-08-24 10:22:56.281930322 +0200
@@ -27,6 +27,7 @@
* or implied, of Jamie Beverly.
*/
+#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
@@ -65,8 +66,8 @@ proc_pid_cmdline(char *** inargv)
case EOF:
case '\0':
if (len > 0) {
- argv = pamsshagentauth_xrealloc(argv, count + 1, sizeof(*argv));
- argv[count] = pamsshagentauth_xcalloc(len + 1, sizeof(*argv[count]));
+ argv = xreallocarray(argv, count + 1, sizeof(*argv));
+ argv[count] = xcalloc(len + 1, sizeof(*argv[count]));
strncpy(argv[count++], argbuf, len);
memset(argbuf, '\0', MAX_LEN_PER_CMDLINE_ARG + 1);
len = 0;
@@ -105,9 +106,9 @@ pamsshagentauth_free_command_line(char *
{
size_t i;
for (i = 0; i < n_args; i++)
- pamsshagentauth_xfree(argv[i]);
+ free(argv[i]);
- pamsshagentauth_xfree(argv);
+ free(argv);
return;
}
diff -up openssh/pam_ssh_agent_auth-0.10.3/identity.h.psaa-compat openssh/pam_ssh_agent_auth-0.10.3/identity.h
--- openssh/pam_ssh_agent_auth-0.10.3/identity.h.psaa-compat 2016-11-13 04:24:32.000000000 +0100
+++ openssh/pam_ssh_agent_auth-0.10.3/identity.h 2018-08-24 10:18:05.009393312 +0200
@@ -30,8 +30,8 @@
#include "openbsd-compat/sys-queue.h"
#include "xmalloc.h"
#include "log.h"
-#include "buffer.h"
-#include "key.h"
+#include "sshbuf.h"
+#include "sshkey.h"
#include "authfd.h"
#include <stdio.h>
@@ -41,7 +41,7 @@ typedef struct idlist Idlist;
struct identity {
TAILQ_ENTRY(identity) next;
AuthenticationConnection *ac; /* set if agent supports key */
- Key *key; /* public/private key */
+ struct sshkey *key; /* public/private key */
char *filename; /* comment for agent-only keys */
int tried;
int isprivate; /* key points to the private key */
diff -up openssh/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c.psaa-compat openssh/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c
--- openssh/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c.psaa-compat 2018-08-24 10:18:05.007393297 +0200
+++ openssh/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c 2018-08-24 10:18:32.937612513 +0200
@@ -36,8 +36,8 @@
#include "openbsd-compat/sys-queue.h"
#include "xmalloc.h"
#include "log.h"
-#include "buffer.h"
-#include "key.h"
+#include "sshbuf.h"
+#include "sshkey.h"
#include "authfd.h"
#include <stdio.h>
#include <openssl/evp.h>
@@ -58,6 +58,8 @@
#include "get_command_line.h"
extern char **environ;
+#define PAM_SSH_AGENT_AUTH_REQUESTv1 101
+
/*
* Added by Jamie Beverly, ensure socket fd points to a socket owned by the user
* A cursory check is done, but to avoid race conditions, it is necessary
@@ -77,7 +79,7 @@ log_action(char ** action, size_t count)
if (count == 0)
return NULL;
- buf = pamsshagentauth_xcalloc((count * MAX_LEN_PER_CMDLINE_ARG) + (count * 3), sizeof(*buf));
+ buf = xcalloc((count * MAX_LEN_PER_CMDLINE_ARG) + (count * 3), sizeof(*buf));
for (i = 0; i < count; i++) {
strcat(buf, (i > 0) ? " '" : "'");
strncat(buf, action[i], MAX_LEN_PER_CMDLINE_ARG);
@@ -87,21 +89,25 @@ log_action(char ** action, size_t count)
}
void
-agent_action(Buffer *buf, char ** action, size_t count)
+agent_action(struct sshbuf **buf, char ** action, size_t count)
{
size_t i;
- pamsshagentauth_buffer_init(buf);
+ int r;
- pamsshagentauth_buffer_put_int(buf, count);
+ if ((*buf = sshbuf_new()) == NULL)
+ fatal("%s: sshbuf_new failed", __func__);
+ if ((r = sshbuf_put_u32(*buf, count)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
for (i = 0; i < count; i++) {
- pamsshagentauth_buffer_put_cstring(buf, action[i]);
+ if ((r = sshbuf_put_cstring(*buf, action[i])) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
}
}
-void
-pamsshagentauth_session_id2_gen(Buffer * session_id2, const char * user,
+static void
+pamsshagentauth_session_id2_gen(struct sshbuf ** session_id2, const char * user,
const char * ruser, const char * servicename)
{
u_char *cookie = NULL;
@@ -114,22 +116,23 @@ pamsshagentauth_session_id2_gen(Buffer *
char ** reported_argv = NULL;
size_t count = 0;
char * action_logbuf = NULL;
- Buffer action_agentbuf;
+ struct sshbuf *action_agentbuf = NULL;
uint8_t free_logbuf = 0;
char * retc;
int32_t reti;
+ int r;
- rnd = pamsshagentauth_arc4random();
+ rnd = arc4random();
cookie_len = ((uint8_t) rnd);
while (cookie_len < 16) {
cookie_len += 16; /* Add 16 bytes to the size to ensure that while the length is random, the length is always reasonable; ticket #18 */
}
- cookie = pamsshagentauth_xcalloc(1,cookie_len);
+ cookie = xcalloc(1, cookie_len);
for (i = 0; i < cookie_len; i++) {
if (i % 4 == 0) {
- rnd = pamsshagentauth_arc4random();
+ rnd = arc4random();
}
cookie[i] = (u_char) rnd;
rnd >>= 8;
@@ -139,12 +141,13 @@ pamsshagentauth_session_id2_gen(Buffer *
if (count > 0) {
free_logbuf = 1;
action_logbuf = log_action(reported_argv, count);
- agent_action(&action_agentbuf, reported_argv, count);
+ agent_action(&action_agentbuf, reported_argv, count);
pamsshagentauth_free_command_line(reported_argv, count);
}
else {
action_logbuf = "unknown on this platform";
- pamsshagentauth_buffer_init(&action_agentbuf); /* stays empty, means unavailable */
+ if ((action_agentbuf = sshbuf_new()) == NULL) /* stays empty, means unavailable */
+ fatal("%s: sshbuf_new failed", __func__);
}
/*
@@ -161,35 +163,39 @@ pamsshagentauth_session_id2_gen(Buffer *
retc = getcwd(pwd, sizeof(pwd) - 1);
time(&ts);
- pamsshagentauth_buffer_init(session_id2);
+ if ((*session_id2 = sshbuf_new()) == NULL)
+ fatal("%s: sshbuf_new failed", __func__);
- pamsshagentauth_buffer_put_int(session_id2, PAM_SSH_AGENT_AUTH_REQUESTv1);
- /* pamsshagentauth_debug3("cookie: %s", pamsshagentauth_tohex(cookie, cookie_len)); */
- pamsshagentauth_buffer_put_string(session_id2, cookie, cookie_len);
- /* pamsshagentauth_debug3("user: %s", user); */
- pamsshagentauth_buffer_put_cstring(session_id2, user);
- /* pamsshagentauth_debug3("ruser: %s", ruser); */
- pamsshagentauth_buffer_put_cstring(session_id2, ruser);
- /* pamsshagentauth_debug3("servicename: %s", servicename); */
- pamsshagentauth_buffer_put_cstring(session_id2, servicename);
- /* pamsshagentauth_debug3("pwd: %s", pwd); */
- if(retc)
- pamsshagentauth_buffer_put_cstring(session_id2, pwd);
- else
- pamsshagentauth_buffer_put_cstring(session_id2, "");
- /* pamsshagentauth_debug3("action: %s", action_logbuf); */
- pamsshagentauth_buffer_put_string(session_id2, action_agentbuf.buf + action_agentbuf.offset, action_agentbuf.end - action_agentbuf.offset);
+ if ((r = sshbuf_put_u32(*session_id2, PAM_SSH_AGENT_AUTH_REQUESTv1)) != 0 ||
+ (r = sshbuf_put_string(*session_id2, cookie, cookie_len)) != 0 ||
+ (r = sshbuf_put_cstring(*session_id2, user)) != 0 ||
+ (r = sshbuf_put_cstring(*session_id2, ruser)) != 0 ||
+ (r = sshbuf_put_cstring(*session_id2, servicename)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
+ if (retc) {
+ if ((r = sshbuf_put_cstring(*session_id2, pwd)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
+ } else {
+ if ((r = sshbuf_put_cstring(*session_id2, "")) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
+ }
+ if ((r = sshbuf_put_stringb(*session_id2, action_agentbuf)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
if (free_logbuf) {
- pamsshagentauth_xfree(action_logbuf);
- pamsshagentauth_buffer_free(&action_agentbuf);
+ free(action_logbuf);
+ sshbuf_free(action_agentbuf);
}
- /* pamsshagentauth_debug3("hostname: %s", hostname); */
- if(reti >= 0)
- pamsshagentauth_buffer_put_cstring(session_id2, hostname);
- else
- pamsshagentauth_buffer_put_cstring(session_id2, "");
- /* pamsshagentauth_debug3("ts: %ld", ts); */
- pamsshagentauth_buffer_put_int64(session_id2, (uint64_t) ts);
+ /* debug3("hostname: %s", hostname); */
+ if (reti >= 0) {
+ if ((r = sshbuf_put_cstring(*session_id2, hostname)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
+ } else {
+ if ((r = sshbuf_put_cstring(*session_id2, "")) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
+ }
+ /* debug3("ts: %ld", ts); */
+ if ((r = sshbuf_put_u64(*session_id2, (uint64_t) ts)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
free(cookie);
return;
@@ -278,7 +280,8 @@ ssh_get_authentication_connection_for_ui
auth = xmalloc(sizeof(*auth));
auth->fd = sock;
- buffer_init(&auth->identities);
+ if ((auth->identities = sshbuf_new()) == NULL)
+ fatal("%s: sshbuf_new failed", __func__);
auth->howmany = 0;
return auth;
@@ -287,43 +289,42 @@ ssh_get_authentication_connection_for_ui
int
pamsshagentauth_find_authorized_keys(const char * user, const char * ruser, const char * servicename)
{
- Buffer session_id2 = { 0 };
+ struct sshbuf *session_id2 = NULL;
Identity *id;
- Key *key;
+ struct sshkey *key;
AuthenticationConnection *ac;
char *comment;
uint8_t retval = 0;
uid_t uid = getpwnam(ruser)->pw_uid;
OpenSSL_add_all_digests();
- pamsshagentauth_session_id2_gen(&session_id2, user, ruser, servicename);
+ pamsshagentauth_session_id2_gen(&session_id2, user, ruser, servicename);
if ((ac = ssh_get_authentication_connection_for_uid(uid))) {
- pamsshagentauth_verbose("Contacted ssh-agent of user %s (%u)", ruser, uid);
+ verbose("Contacted ssh-agent of user %s (%u)", ruser, uid);
for (key = ssh_get_first_identity(ac, &comment, 2); key != NULL; key = ssh_get_next_identity(ac, &comment, 2))
{
if(key != NULL) {
- id = pamsshagentauth_xcalloc(1, sizeof(*id));
+ id = xcalloc(1, sizeof(*id));
id->key = key;
id->filename = comment;
id->ac = ac;
- if(userauth_pubkey_from_id(ruser, id, &session_id2)) {
+ if(userauth_pubkey_from_id(ruser, id, session_id2)) {
retval = 1;
}
- pamsshagentauth_xfree(id->filename);
- pamsshagentauth_key_free(id->key);
- pamsshagentauth_xfree(id);
+ free(id->filename);
+ key_free(id->key);
+ free(id);
if(retval == 1)
break;
}
}
- pamsshagentauth_buffer_free(&session_id2);
+ sshbuf_free(session_id2);
ssh_close_authentication_connection(ac);
}
else {
- pamsshagentauth_verbose("No ssh-agent could be contacted");
+ verbose("No ssh-agent could be contacted");
}
- /* pamsshagentauth_xfree(session_id2); */
EVP_cleanup();
return retval;
}
diff -up openssh/pam_ssh_agent_auth-0.10.3/pam_ssh_agent_auth.c.psaa-compat openssh/pam_ssh_agent_auth-0.10.3/pam_ssh_agent_auth.c
--- openssh/pam_ssh_agent_auth-0.10.3/pam_ssh_agent_auth.c.psaa-compat 2018-08-24 10:18:05.008393305 +0200
+++ openssh/pam_ssh_agent_auth-0.10.3/pam_ssh_agent_auth.c 2018-08-24 10:18:05.009393312 +0200
@@ -104,7 +104,7 @@ pam_sm_authenticate(pam_handle_t * pamh,
* a patch 8-)
*/
#if ! HAVE___PROGNAME || HAVE_BUNDLE
- __progname = pamsshagentauth_xstrdup(servicename);
+ __progname = xstrdup(servicename);
#endif
for(i = argc, argv_ptr = (char **) argv; i > 0; ++argv_ptr, i--) {
@@ -130,11 +130,11 @@ pam_sm_authenticate(pam_handle_t * pamh,
#endif
}
- pamsshagentauth_log_init(__progname, log_lvl, facility, getenv("PAM_SSH_AGENT_AUTH_DEBUG") ? 1 : 0);
+ log_init(__progname, log_lvl, facility, getenv("PAM_SSH_AGENT_AUTH_DEBUG") ? 1 : 0);
pam_get_item(pamh, PAM_USER, (void *) &user);
pam_get_item(pamh, PAM_RUSER, (void *) &ruser_ptr);
- pamsshagentauth_verbose("Beginning pam_ssh_agent_auth for user %s", user);
+ verbose("Beginning pam_ssh_agent_auth for user %s", user);
if(ruser_ptr) {
strncpy(ruser, ruser_ptr, sizeof(ruser) - 1);
@@ -149,12 +149,12 @@ pam_sm_authenticate(pam_handle_t * pamh,
#ifdef ENABLE_SUDO_HACK
if( (strlen(sudo_service_name) > 0) && strncasecmp(servicename, sudo_service_name, sizeof(sudo_service_name) - 1) == 0 && getenv("SUDO_USER") ) {
strncpy(ruser, getenv("SUDO_USER"), sizeof(ruser) - 1 );
- pamsshagentauth_verbose( "Using environment variable SUDO_USER (%s)", ruser );
+ verbose( "Using environment variable SUDO_USER (%s)", ruser );
} else
#endif
{
if( ! getpwuid(getuid()) ) {
- pamsshagentauth_verbose("Unable to getpwuid(getuid())");
+ verbose("Unable to getpwuid(getuid())");
goto cleanexit;
}
strncpy(ruser, getpwuid(getuid())->pw_name, sizeof(ruser) - 1);
@@ -163,11 +163,11 @@ pam_sm_authenticate(pam_handle_t * pamh,
/* Might as well explicitely confirm the user exists here */
if(! getpwnam(ruser) ) {
- pamsshagentauth_verbose("getpwnam(%s) failed, bailing out", ruser);
+ verbose("getpwnam(%s) failed, bailing out", ruser);
goto cleanexit;
}
if( ! getpwnam(user) ) {
- pamsshagentauth_verbose("getpwnam(%s) failed, bailing out", user);
+ verbose("getpwnam(%s) failed, bailing out", user);
goto cleanexit;
}
@@ -177,8 +177,8 @@ pam_sm_authenticate(pam_handle_t * pamh,
*/
parse_authorized_key_file(user, authorized_keys_file_input);
} else {
- pamsshagentauth_verbose("Using default file=/etc/security/authorized_keys");
- authorized_keys_file = pamsshagentauth_xstrdup("/etc/security/authorized_keys");
+ verbose("Using default file=/etc/security/authorized_keys");
+ authorized_keys_file = xstrdup("/etc/security/authorized_keys");
}
/*
@@ -187,19 +187,19 @@ pam_sm_authenticate(pam_handle_t * pamh,
*/
if(user && strlen(ruser) > 0) {
- pamsshagentauth_verbose("Attempting authentication: `%s' as `%s' using %s", ruser, user, authorized_keys_file);
+ verbose("Attempting authentication: `%s' as `%s' using %s", ruser, user, authorized_keys_file);
/*
* this pw_uid is used to validate the SSH_AUTH_SOCK, and so must be the uid of the ruser invoking the program, not the target-user
*/
if(pamsshagentauth_find_authorized_keys(user, ruser, servicename)) { /* getpwnam(ruser)->pw_uid)) { */
- pamsshagentauth_logit("Authenticated: `%s' as `%s' using %s", ruser, user, authorized_keys_file);
+ logit("Authenticated: `%s' as `%s' using %s", ruser, user, authorized_keys_file);
retval = PAM_SUCCESS;
} else {
- pamsshagentauth_logit("Failed Authentication: `%s' as `%s' using %s", ruser, user, authorized_keys_file);
+ logit("Failed Authentication: `%s' as `%s' using %s", ruser, user, authorized_keys_file);
}
} else {
- pamsshagentauth_logit("No %s specified, cannot continue with this form of authentication", (user) ? "ruser" : "user" );
+ logit("No %s specified, cannot continue with this form of authentication", (user) ? "ruser" : "user" );
}
cleanexit:
diff -up openssh/pam_ssh_agent_auth-0.10.3/pam_user_authorized_keys.c.psaa-compat openssh/pam_ssh_agent_auth-0.10.3/pam_user_authorized_keys.c
--- openssh/pam_ssh_agent_auth-0.10.3/pam_user_authorized_keys.c.psaa-compat 2016-11-13 04:24:32.000000000 +0100
+++ openssh/pam_ssh_agent_auth-0.10.3/pam_user_authorized_keys.c 2018-08-24 10:18:05.009393312 +0200
@@ -66,8 +66,8 @@
#include "xmalloc.h"
#include "match.h"
#include "log.h"
-#include "buffer.h"
-#include "key.h"
+#include "sshbuf.h"
+#include "sshkey.h"
#include "misc.h"
#include "xmalloc.h"
@@ -77,7 +77,6 @@
#include "pathnames.h"
#include "secure_filename.h"
-#include "identity.h"
#include "pam_user_key_allowed2.h"
extern char *authorized_keys_file;
@@ -117,12 +116,12 @@ parse_authorized_key_file(const char *us
} else {
slash_ptr = strchr(auth_keys_file_buf, '/');
if(!slash_ptr)
- pamsshagentauth_fatal
+ fatal
("cannot expand tilde in path without a `/'");
owner_uname_len = slash_ptr - auth_keys_file_buf - 1;
if(owner_uname_len > (sizeof(owner_uname) - 1))
- pamsshagentauth_fatal("Username too long");
+ fatal("Username too long");
strncat(owner_uname, auth_keys_file_buf + 1, owner_uname_len);
if(!authorized_keys_file_allowed_owner_uid)
@@ -130,11 +129,11 @@ parse_authorized_key_file(const char *us
getpwnam(owner_uname)->pw_uid;
}
authorized_keys_file =
- pamsshagentauth_tilde_expand_filename(auth_keys_file_buf,
+ tilde_expand_filename(auth_keys_file_buf,
authorized_keys_file_allowed_owner_uid);
strncpy(auth_keys_file_buf, authorized_keys_file,
sizeof(auth_keys_file_buf) - 1);
- pamsshagentauth_xfree(authorized_keys_file) /* when we
+ free(authorized_keys_file) /* when we
percent_expand
later, we'd step
on this, so free
@@ -150,13 +149,13 @@ parse_authorized_key_file(const char *us
strncat(hostname, fqdn, strcspn(fqdn, "."));
#endif
authorized_keys_file =
- pamsshagentauth_percent_expand(auth_keys_file_buf, "h",
+ percent_expand(auth_keys_file_buf, "h",
getpwnam(user)->pw_dir, "H", hostname,
"f", fqdn, "u", user, NULL);
}
int
-pam_user_key_allowed(const char *ruser, Key * key)
+pam_user_key_allowed(const char *ruser, struct sshkey * key)
{
return
pamsshagentauth_user_key_allowed2(getpwuid(authorized_keys_file_allowed_owner_uid),
diff -up openssh/pam_ssh_agent_auth-0.10.3/pam_user_authorized_keys.h.psaa-compat openssh/pam_ssh_agent_auth-0.10.3/pam_user_authorized_keys.h
--- openssh/pam_ssh_agent_auth-0.10.3/pam_user_authorized_keys.h.psaa-compat 2016-11-13 04:24:32.000000000 +0100
+++ openssh/pam_ssh_agent_auth-0.10.3/pam_user_authorized_keys.h 2018-08-24 10:18:05.010393320 +0200
@@ -32,7 +32,7 @@
#define _PAM_USER_KEY_ALLOWED_H
#include "identity.h"
-int pam_user_key_allowed(const char *, Key *);
+int pam_user_key_allowed(const char *, struct sshkey *);
void parse_authorized_key_file(const char *, const char *);
#endif
diff -up openssh/pam_ssh_agent_auth-0.10.3/pam_user_key_allowed2.c.psaa-compat openssh/pam_ssh_agent_auth-0.10.3/pam_user_key_allowed2.c
--- openssh/pam_ssh_agent_auth-0.10.3/pam_user_key_allowed2.c.psaa-compat 2016-11-13 04:24:32.000000000 +0100
+++ openssh/pam_ssh_agent_auth-0.10.3/pam_user_key_allowed2.c 2018-08-24 10:18:05.010393320 +0200
@@ -45,44 +45,46 @@
#include "xmalloc.h"
#include "ssh.h"
#include "ssh2.h"
-#include "buffer.h"
+#include "sshbuf.h"
#include "log.h"
#include "compat.h"
-#include "key.h"
+#include "digest.h"
+#include "sshkey.h"
#include "pathnames.h"
#include "misc.h"
#include "secure_filename.h"
#include "uidswap.h"
-
-#include "identity.h"
+#include <unistd.h>
/* return 1 if user allows given key */
/* Modified slightly from original found in auth2-pubkey.c */
static int
-pamsshagentauth_check_authkeys_file(FILE * f, char *file, Key * key)
+pamsshagentauth_check_authkeys_file(FILE * f, char *file, struct sshkey * key)
{
- char line[SSH_MAX_PUBKEY_BYTES];
+ char *line = NULL;
int found_key = 0;
u_long linenum = 0;
- Key *found;
+ struct sshkey *found;
char *fp;
+ size_t linesize = 0;
found_key = 0;
- found = pamsshagentauth_key_new(key->type);
+ found = sshkey_new(key->type);
- while(read_keyfile_line(f, file, line, sizeof(line), &linenum) != -1) {
+ while ((getline(&line, &linesize, f)) != -1) {
char *cp = NULL; /* *key_options = NULL; */
+ linenum++;
/* Skip leading whitespace, empty and comment lines. */
for(cp = line; *cp == ' ' || *cp == '\t'; cp++);
if(!*cp || *cp == '\n' || *cp == '#')
continue;
- if(pamsshagentauth_key_read(found, &cp) != 1) {
+ if (sshkey_read(found, &cp) != 0) {
/* no key? check if there are options for this key */
int quoted = 0;
- pamsshagentauth_verbose("user_key_allowed: check options: '%s'", cp);
+ verbose("user_key_allowed: check options: '%s'", cp);
/* key_options = cp; */
for(; *cp && (quoted || (*cp != ' ' && *cp != '\t')); cp++) {
if(*cp == '\\' && cp[1] == '"')
@@ -92,26 +94,27 @@ pamsshagentauth_check_authkeys_file(FILE
}
/* Skip remaining whitespace. */
for(; *cp == ' ' || *cp == '\t'; cp++);
- if(pamsshagentauth_key_read(found, &cp) != 1) {
- pamsshagentauth_verbose("user_key_allowed: advance: '%s'", cp);
+ if(sshkey_read(found, &cp) != 0) {
+ verbose("user_key_allowed: advance: '%s'", cp);
/* still no key? advance to next line */
continue;
}
}
- if(pamsshagentauth_key_equal(found, key)) {
+ if(sshkey_equal(found, key)) {
found_key = 1;
- pamsshagentauth_logit("matching key found: file/command %s, line %lu", file,
+ logit("matching key found: file/command %s, line %lu", file,
linenum);
- fp = pamsshagentauth_key_fingerprint(found, SSH_FP_MD5, SSH_FP_HEX);
- pamsshagentauth_logit("Found matching %s key: %s",
- pamsshagentauth_key_type(found), fp);
- pamsshagentauth_xfree(fp);
+ fp = sshkey_fingerprint(found, SSH_DIGEST_SHA256, SSH_FP_BASE64);
+ logit("Found matching %s key: %s",
+ sshkey_type(found), fp);
+ free(fp);
break;
}
}
- pamsshagentauth_key_free(found);
+ free(line);
+ sshkey_free(found);
if(!found_key)
- pamsshagentauth_verbose("key not found");
+ verbose("key not found");
return found_key;
}
@@ -120,19 +123,19 @@ pamsshagentauth_check_authkeys_file(FILE
* returns 1 if the key is allowed or 0 otherwise.
*/
int
-pamsshagentauth_user_key_allowed2(struct passwd *pw, Key * key, char *file)
+pamsshagentauth_user_key_allowed2(struct passwd *pw, struct sshkey * key, char *file)
{
FILE *f;
int found_key = 0;
struct stat st;
- char buf[SSH_MAX_PUBKEY_BYTES];
+ char buf[256];
/* Temporarily use the user's uid. */
- pamsshagentauth_verbose("trying public key file %s", file);
+ verbose("trying public key file %s", file);
/* Fail not so quietly if file does not exist */
if(stat(file, &st) < 0) {
- pamsshagentauth_verbose("File not found: %s", file);
+ verbose("File not found: %s", file);
return 0;
}
@@ -144,7 +147,7 @@ pamsshagentauth_user_key_allowed2(struct
if(pamsshagentauth_secure_filename(f, file, pw, buf, sizeof(buf)) != 0) {
fclose(f);
- pamsshagentauth_logit("Authentication refused: %s", buf);
+ logit("Authentication refused: %s", buf);
return 0;
}
@@ -160,7 +163,7 @@ pamsshagentauth_user_key_allowed2(struct
int
pamsshagentauth_user_key_command_allowed2(char *authorized_keys_command,
char *authorized_keys_command_user,
- struct passwd *user_pw, Key * key)
+ struct passwd *user_pw, struct sshkey * key)
{
FILE *f;
int ok, found_key = 0;
@@ -187,44 +190,44 @@ pamsshagentauth_user_key_command_allowed
else {
pw = getpwnam(authorized_keys_command_user);
if(pw == NULL) {
- pamsshagentauth_logerror("authorized_keys_command_user \"%s\" not found: %s",
+ error("authorized_keys_command_user \"%s\" not found: %s",
authorized_keys_command_user, strerror(errno));
return 0;
}
}
- pamsshagentauth_temporarily_use_uid(pw);
+ temporarily_use_uid(pw);
if(stat(authorized_keys_command, &st) < 0) {
- pamsshagentauth_logerror
+ error
("Could not stat AuthorizedKeysCommand \"%s\": %s",
authorized_keys_command, strerror(errno));
goto out;
}
if(pamsshagentauth_auth_secure_path
(authorized_keys_command, &st, NULL, 0, errmsg, sizeof(errmsg)) != 0) {
- pamsshagentauth_logerror("Unsafe AuthorizedKeysCommand: %s", errmsg);
+ error("Unsafe AuthorizedKeysCommand: %s", errmsg);
goto out;
}
/* open the pipe and read the keys */
if(pipe(p) != 0) {
- pamsshagentauth_logerror("%s: pipe: %s", __func__, strerror(errno));
+ error("%s: pipe: %s", __func__, strerror(errno));
goto out;
}
- pamsshagentauth_debug("Running AuthorizedKeysCommand: \"%s\" as \"%s\" with argument: \"%s\"",
+ debug("Running AuthorizedKeysCommand: \"%s\" as \"%s\" with argument: \"%s\"",
authorized_keys_command, pw->pw_name, username);
/*
* Don't want to call this in the child, where it can fatal() and
* run cleanup_exit() code.
*/
- pamsshagentauth_restore_uid();
+ restore_uid();
switch ((pid = fork())) {
case -1: /* error */
- pamsshagentauth_logerror("%s: fork: %s", __func__, strerror(errno));
+ error("%s: fork: %s", __func__, strerror(errno));
close(p[0]);
close(p[1]);
return 0;
@@ -234,13 +237,13 @@ pamsshagentauth_user_key_command_allowed
/* do this before the setresuid so thta they can be logged */
if((devnull = open(_PATH_DEVNULL, O_RDWR)) == -1) {
- pamsshagentauth_logerror("%s: open %s: %s", __func__, _PATH_DEVNULL,
+ error("%s: open %s: %s", __func__, _PATH_DEVNULL,
strerror(errno));
_exit(1);
}
if(dup2(devnull, STDIN_FILENO) == -1 || dup2(p[1], STDOUT_FILENO) == -1
|| dup2(devnull, STDERR_FILENO) == -1) {
- pamsshagentauth_logerror("%s: dup2: %s", __func__, strerror(errno));
+ error("%s: dup2: %s", __func__, strerror(errno));
_exit(1);
}
#if defined(HAVE_SETRESGID) && !defined(BROKEN_SETRESGID)
@@ -248,7 +251,7 @@ pamsshagentauth_user_key_command_allowed
#else
if (setgid(pw->pw_gid) != 0 || setegid(pw->pw_gid) != 0) {
#endif
- pamsshagentauth_logerror("setresgid %u: %s", (u_int) pw->pw_gid,
+ error("setresgid %u: %s", (u_int) pw->pw_gid,
strerror(errno));
_exit(1);
}
@@ -258,7 +261,7 @@ pamsshagentauth_user_key_command_allowed
#else
if (setuid(pw->pw_uid) != 0 || seteuid(pw->pw_uid) != 0) {
#endif
- pamsshagentauth_logerror("setresuid %u: %s", (u_int) pw->pw_uid,
+ error("setresuid %u: %s", (u_int) pw->pw_uid,
strerror(errno));
_exit(1);
}
@@ -270,18 +273,18 @@ pamsshagentauth_user_key_command_allowed
/* pretty sure this will barf because we are now suid, but since we
should't reach this anyway, I'll leave it here */
- pamsshagentauth_logerror("AuthorizedKeysCommand %s exec failed: %s",
+ error("AuthorizedKeysCommand %s exec failed: %s",
authorized_keys_command, strerror(errno));
_exit(127);
default: /* parent */
break;
}
- pamsshagentauth_temporarily_use_uid(pw);
+ temporarily_use_uid(pw);
close(p[1]);
if((f = fdopen(p[0], "r")) == NULL) {
- pamsshagentauth_logerror("%s: fdopen: %s", __func__, strerror(errno));
+ error("%s: fdopen: %s", __func__, strerror(errno));
close(p[0]);
/* Don't leave zombie child */
while(waitpid(pid, NULL, 0) == -1 && errno == EINTR);
@@ -292,22 +295,22 @@ pamsshagentauth_user_key_command_allowed
while(waitpid(pid, &status, 0) == -1) {
if(errno != EINTR) {
- pamsshagentauth_logerror("%s: waitpid: %s", __func__,
+ error("%s: waitpid: %s", __func__,
strerror(errno));
goto out;
}
}
if(WIFSIGNALED(status)) {
- pamsshagentauth_logerror("AuthorizedKeysCommand %s exited on signal %d",
+ error("AuthorizedKeysCommand %s exited on signal %d",
authorized_keys_command, WTERMSIG(status));
goto out;
} else if(WEXITSTATUS(status) != 0) {
- pamsshagentauth_logerror("AuthorizedKeysCommand %s returned status %d",
+ error("AuthorizedKeysCommand %s returned status %d",
authorized_keys_command, WEXITSTATUS(status));
goto out;
}
found_key = ok;
out:
- pamsshagentauth_restore_uid();
+ restore_uid();
return found_key;
}
diff -up openssh/pam_ssh_agent_auth-0.10.3/pam_user_key_allowed2.h.psaa-compat openssh/pam_ssh_agent_auth-0.10.3/pam_user_key_allowed2.h
--- openssh/pam_ssh_agent_auth-0.10.3/pam_user_key_allowed2.h.psaa-compat 2016-11-13 04:24:32.000000000 +0100
+++ openssh/pam_ssh_agent_auth-0.10.3/pam_user_key_allowed2.h 2018-08-24 10:18:05.010393320 +0200
@@ -32,7 +32,7 @@
#define _PAM_USER_KEY_ALLOWED_H
#include "identity.h"
-int pamsshagentauth_user_key_allowed2(struct passwd *, Key *, char *);
-int pamsshagentauth_user_key_command_allowed2(char *, char *, struct passwd *, Key *);
+int pamsshagentauth_user_key_allowed2(struct passwd *, struct sshkey *, char *);
+int pamsshagentauth_user_key_command_allowed2(char *, char *, struct passwd *, struct sshkey *);
#endif
diff -up openssh/pam_ssh_agent_auth-0.10.3/secure_filename.c.psaa-compat openssh/pam_ssh_agent_auth-0.10.3/secure_filename.c
--- openssh/pam_ssh_agent_auth-0.10.3/secure_filename.c.psaa-compat 2016-11-13 04:24:32.000000000 +0100
+++ openssh/pam_ssh_agent_auth-0.10.3/secure_filename.c 2018-08-24 10:18:05.010393320 +0200
@@ -53,8 +53,8 @@
#include "xmalloc.h"
#include "match.h"
#include "log.h"
-#include "buffer.h"
-#include "key.h"
+#include "sshbuf.h"
+#include "sshkey.h"
#include "misc.h"
@@ -80,7 +80,7 @@ pamsshagentauth_auth_secure_path(const c
int comparehome = 0;
struct stat st;
- pamsshagentauth_verbose("auth_secure_filename: checking for uid: %u", uid);
+ verbose("auth_secure_filename: checking for uid: %u", uid);
if (realpath(name, buf) == NULL) {
snprintf(err, errlen, "realpath %s failed: %s", name,
@@ -115,9 +115,9 @@ pamsshagentauth_auth_secure_path(const c
snprintf(err, errlen, "dirname() failed");
return -1;
}
- pamsshagentauth_strlcpy(buf, cp, sizeof(buf));
+ strlcpy(buf, cp, sizeof(buf));
- pamsshagentauth_verbose("secure_filename: checking '%s'", buf);
+ verbose("secure_filename: checking '%s'", buf);
if (stat(buf, &st) < 0 ||
(st.st_uid != 0 && st.st_uid != uid) ||
(st.st_mode & 022) != 0) {
@@ -128,7 +128,7 @@ pamsshagentauth_auth_secure_path(const c
/* If are passed the homedir then we can stop */
if (comparehome && strcmp(homedir, buf) == 0) {
- pamsshagentauth_verbose("secure_filename: terminating check at '%s'",
+ verbose("secure_filename: terminating check at '%s'",
buf);
break;
}
diff -up openssh/pam_ssh_agent_auth-0.10.3/userauth_pubkey_from_id.c.psaa-compat openssh/pam_ssh_agent_auth-0.10.3/userauth_pubkey_from_id.c
--- openssh/pam_ssh_agent_auth-0.10.3/userauth_pubkey_from_id.c.psaa-compat 2016-11-13 04:24:32.000000000 +0100
+++ openssh/pam_ssh_agent_auth-0.10.3/userauth_pubkey_from_id.c 2018-08-24 10:22:13.202657025 +0200
@@ -37,10 +37,11 @@
#include "xmalloc.h"
#include "ssh.h"
#include "ssh2.h"
-#include "buffer.h"
+#include "sshbuf.h"
#include "log.h"
#include "compat.h"
-#include "key.h"
+#include "sshkey.h"
+#include "ssherr.h"
#include "pathnames.h"
#include "misc.h"
#include "secure_filename.h"
@@ -48,54 +48,59 @@
#include "identity.h"
#include "pam_user_authorized_keys.h"
+#define SSH2_MSG_USERAUTH_TRUST_REQUEST 54
+
/* extern u_char *session_id2;
extern uint8_t session_id_len;
*/
int
-userauth_pubkey_from_id(const char *ruser, Identity * id, Buffer * session_id2)
+userauth_pubkey_from_id(const char *ruser, Identity * id, struct sshbuf * session_id2)
{
- Buffer b = { 0 };
+ struct sshbuf *b = NULL;
char *pkalg = NULL;
u_char *pkblob = NULL, *sig = NULL;
- u_int blen = 0, slen = 0;
+ size_t blen = 0, slen = 0;
- int authenticated = 0;
+ int r, authenticated = 0;
- pkalg = (char *) key_ssh_name(id->key);
+ pkalg = (char *) sshkey_ssh_name(id->key);
/* first test if this key is even allowed */
if(! pam_user_key_allowed(ruser, id->key))
- goto user_auth_clean_exit;
+ goto user_auth_clean_exit_without_buffer;
- if(pamsshagentauth_key_to_blob(id->key, &pkblob, &blen) == 0)
- goto user_auth_clean_exit;
+ if(sshkey_to_blob(id->key, &pkblob, &blen) != 0)
+ goto user_auth_clean_exit_without_buffer;
/* construct packet to sign and test */
- pamsshagentauth_buffer_init(&b);
+ if ((b = sshbuf_new()) == NULL)
+ fatal("%s: sshbuf_new failed", __func__);
- pamsshagentauth_buffer_put_string(&b, session_id2->buf + session_id2->offset, session_id2->end - session_id2->offset);
- pamsshagentauth_buffer_put_char(&b, SSH2_MSG_USERAUTH_TRUST_REQUEST);
- pamsshagentauth_buffer_put_cstring(&b, ruser);
- pamsshagentauth_buffer_put_cstring(&b, "pam_ssh_agent_auth");
- pamsshagentauth_buffer_put_cstring(&b, "publickey");
- pamsshagentauth_buffer_put_char(&b, 1);
- pamsshagentauth_buffer_put_cstring(&b, pkalg);
- pamsshagentauth_buffer_put_string(&b, pkblob, blen);
+ if ((r = sshbuf_put_string(b, sshbuf_ptr(session_id2), sshbuf_len(session_id2))) != 0 ||
+ (r = sshbuf_put_u8(b, SSH2_MSG_USERAUTH_TRUST_REQUEST)) != 0 ||
+ (r = sshbuf_put_cstring(b, ruser)) != 0 ||
+ (r = sshbuf_put_cstring(b, "pam_ssh_agent_auth")) != 0 ||
+ (r = sshbuf_put_cstring(b, "publickey")) != 0 ||
+ (r = sshbuf_put_u8(b, 1)) != 0 ||
+ (r = sshbuf_put_cstring(b, pkalg)) != 0 ||
+ (r = sshbuf_put_string(b, pkblob, blen)) != 0)
+ fatal("%s: buffer error: %s", __func__, ssh_err(r));
- if(ssh_agent_sign(id->ac, id->key, &sig, &slen, pamsshagentauth_buffer_ptr(&b), pamsshagentauth_buffer_len(&b)) != 0)
+ if (ssh_agent_sign(id->ac, id->key, &sig, &slen, sshbuf_ptr(b), sshbuf_len(b)) != 0)
goto user_auth_clean_exit;
/* test for correct signature */
- if(pamsshagentauth_key_verify(id->key, sig, slen, pamsshagentauth_buffer_ptr(&b), pamsshagentauth_buffer_len(&b)) == 1)
+ if (sshkey_verify(id->key, sig, slen, sshbuf_ptr(b), sshbuf_len(b), NULL, 0) == 0)
authenticated = 1;
user_auth_clean_exit:
/* if(&b != NULL) */
- pamsshagentauth_buffer_free(&b);
+ sshbuf_free(b);
+ user_auth_clean_exit_without_buffer:
if(sig != NULL)
- pamsshagentauth_xfree(sig);
+ free(sig);
if(pkblob != NULL)
- pamsshagentauth_xfree(pkblob);
+ free(pkblob);
CRYPTO_cleanup_all_ex_data();
return authenticated;
}
diff -up openssh/pam_ssh_agent_auth-0.10.3/userauth_pubkey_from_id.h.psaa-compat openssh/pam_ssh_agent_auth-0.10.3/userauth_pubkey_from_id.h
--- openssh/pam_ssh_agent_auth-0.10.3/userauth_pubkey_from_id.h.psaa-compat 2016-11-13 04:24:32.000000000 +0100
+++ openssh/pam_ssh_agent_auth-0.10.3/userauth_pubkey_from_id.h 2018-08-24 10:18:05.010393320 +0200
@@ -31,7 +31,7 @@
#ifndef _USERAUTH_PUBKEY_FROM_ID_H
#define _USERAUTH_PUBKEY_FROM_ID_H
-#include <identity.h>
-int userauth_pubkey_from_id(const char *, Identity *, Buffer *);
+#include "identity.h"
+int userauth_pubkey_from_id(const char *, Identity *, struct sshbuf *);
#endif
diff -up openssh/pam_ssh_agent_auth-0.10.3/uuencode.c.psaa-compat openssh/pam_ssh_agent_auth-0.10.3/uuencode.c
--- openssh/pam_ssh_agent_auth-0.10.3/uuencode.c.psaa-compat 2016-11-13 04:24:32.000000000 +0100
+++ openssh/pam_ssh_agent_auth-0.10.3/uuencode.c 2018-08-24 10:18:05.010393320 +0200
@@ -56,7 +56,7 @@ pamsshagentauth_uudecode(const char *src
/* and remove trailing whitespace because __b64_pton needs this */
*p = '\0';
len = pamsshagentauth___b64_pton(encoded, target, targsize);
- pamsshagentauth_xfree(encoded);
+ xfree(encoded);
return len;
}
@@ -70,7 +70,7 @@ pamsshagentauth_dump_base64(FILE *fp, co
fprintf(fp, "dump_base64: len > 65536\n");
return;
}
- buf = pamsshagentauth_xmalloc(2*len);
+ buf = malloc(2*len);
n = pamsshagentauth_uuencode(data, len, buf, 2*len);
for (i = 0; i < n; i++) {
fprintf(fp, "%c", buf[i]);
@@ -79,5 +79,5 @@ pamsshagentauth_dump_base64(FILE *fp, co
}
if (i % 70 != 69)
fprintf(fp, "\n");
- pamsshagentauth_xfree(buf);
+ free(buf);
}

20
SOURCES/pam_ssh_agent_auth-0.10.2-dereference.patch Normal file
View File

@ -0,0 +1,20 @@
diff --git a/pam_ssh_agent_auth-0.10.2/pam_user_authorized_keys.c b/pam_ssh_agent_auth-0.10.2/pam_user_authorized_keys.c
--- a/pam_ssh_agent_auth-0.10.2/pam_user_authorized_keys.c
+++ b/pam_ssh_agent_auth-0.10.2/pam_user_authorized_keys.c
@@ -158,11 +158,12 @@ parse_authorized_key_file(const char *user,
int
pam_user_key_allowed(const char *ruser, struct sshkey * key)
{
+ struct passwd *pw;
return
- pamsshagentauth_user_key_allowed2(getpwuid(authorized_keys_file_allowed_owner_uid),
- key, authorized_keys_file)
- || pamsshagentauth_user_key_allowed2(getpwuid(0), key,
- authorized_keys_file)
+ ( (pw = getpwuid(authorized_keys_file_allowed_owner_uid)) &&
+ pamsshagentauth_user_key_allowed2(pw, key, authorized_keys_file))
+ || ((pw = getpwuid(0)) &&
+ pamsshagentauth_user_key_allowed2(pw, key, authorized_keys_file))
|| pamsshagentauth_user_key_command_allowed2(authorized_keys_command,
authorized_keys_command_user,
getpwnam(ruser), key);

37
SOURCES/pam_ssh_agent_auth-0.10.3-seteuid.patch Normal file
View File

@ -0,0 +1,37 @@
diff -up openssh-7.4p1/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c.psaa-seteuid openssh-7.4p1/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c
--- openssh-7.4p1/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c.psaa-seteuid 2017-02-07 15:41:53.172334151 +0100
+++ openssh-7.4p1/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c 2017-02-07 15:41:53.174334149 +0100
@@ -238,17 +238,26 @@ ssh_get_authentication_socket_for_uid(ui
}
errno = 0;
- seteuid(uid); /* To ensure a race condition is not used to circumvent the stat
- above, we will temporarily drop UID to the caller */
- if (connect(sock, (struct sockaddr *)&sunaddr, sizeof sunaddr) < 0) {
+ /* To ensure a race condition is not used to circumvent the stat
+ above, we will temporarily drop UID to the caller */
+ if (seteuid(uid) == -1) {
close(sock);
- if(errno == EACCES)
- fatal("MAJOR SECURITY WARNING: uid %lu made a deliberate and malicious attempt to open an agent socket owned by another user", (unsigned long) uid);
+ error("seteuid(%lu) failed with error: %s",
+ (unsigned long) uid, strerror(errno));
return -1;
}
+ if (connect(sock, (struct sockaddr *)&sunaddr, sizeof sunaddr) < 0) {
+ close(sock);
+ sock = -1;
+ if(errno == EACCES)
+ fatal("MAJOR SECURITY WARNING: uid %lu made a deliberate and malicious attempt to open an agent socket owned by another user", (unsigned long) uid);
+ }
- seteuid(0); /* we now continue the regularly scheduled programming */
-
+ /* we now continue the regularly scheduled programming */
+ if (0 != seteuid(0)) {
+ fatal("setuid(0) failed with error: %s", strerror(errno));
+ return -1;
+ }
return sock;
}

21
SOURCES/pam_ssh_agent_auth-0.9.2-visibility.patch Normal file
View File

@ -0,0 +1,21 @@
diff -up openssh-7.1p2/pam_ssh_agent_auth-0.10.2/pam_ssh_agent_auth.c.psaa-visibility openssh-7.1p2/pam_ssh_agent_auth-0.10.2/pam_ssh_agent_auth.c
--- openssh-7.1p2/pam_ssh_agent_auth-0.10.2/pam_ssh_agent_auth.c.psaa-visibility 2014-03-31 19:35:17.000000000 +0200
+++ openssh-7.1p2/pam_ssh_agent_auth-0.10.2/pam_ssh_agent_auth.c 2016-01-22 15:22:40.984469774 +0100
@@ -72,7 +72,7 @@ char *__progname;
extern char *__progname;
#endif
-PAM_EXTERN int
+PAM_EXTERN int __attribute__ ((visibility ("default")))
pam_sm_authenticate(pam_handle_t * pamh, int flags, int argc, const char **argv)
{
char **argv_ptr;
@@ -214,7 +214,7 @@ cleanexit:
}
-PAM_EXTERN int
+PAM_EXTERN int __attribute__ ((visibility ("default")))
pam_sm_setcred(pam_handle_t * pamh, int flags, int argc, const char **argv)
{
UNUSED(pamh);

96
SOURCES/pam_ssh_agent_auth-0.9.3-agent_structure.patch Normal file
View File

@ -0,0 +1,96 @@
diff -up openssh/pam_ssh_agent_auth-0.10.3/identity.h.psaa-agent openssh/pam_ssh_agent_auth-0.10.3/identity.h
--- openssh/pam_ssh_agent_auth-0.10.3/identity.h.psaa-agent 2016-11-13 04:24:32.000000000 +0100
+++ openssh/pam_ssh_agent_auth-0.10.3/identity.h 2017-09-27 14:25:49.421739027 +0200
@@ -38,6 +38,12 @@
typedef struct identity Identity;
typedef struct idlist Idlist;
+typedef struct {
+ int fd;
+ struct sshbuf *identities;
+ int howmany;
+} AuthenticationConnection;
+
struct identity {
TAILQ_ENTRY(identity) next;
AuthenticationConnection *ac; /* set if agent supports key */
diff -up openssh/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c.psaa-agent openssh/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c
--- openssh/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c.psaa-agent 2017-09-27 14:25:49.420739021 +0200
+++ openssh/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c 2017-09-27 14:25:49.421739027 +0200
@@ -39,6 +39,7 @@
#include "sshbuf.h"
#include "sshkey.h"
#include "authfd.h"
+#include "ssherr.h"
#include <stdio.h>
#include <openssl/evp.h>
#include "ssh2.h"
@@ -291,36 +292,43 @@ pamsshagentauth_find_authorized_keys(con
{
struct sshbuf *session_id2 = NULL;
Identity *id;
- struct sshkey *key;
AuthenticationConnection *ac;
- char *comment;
uint8_t retval = 0;
uid_t uid = getpwnam(ruser)->pw_uid;
+ struct ssh_identitylist *idlist;
+ int r;
+ unsigned int i;
OpenSSL_add_all_digests();
pamsshagentauth_session_id2_gen(&session_id2, user, ruser, servicename);
if ((ac = ssh_get_authentication_connection_for_uid(uid))) {
verbose("Contacted ssh-agent of user %s (%u)", ruser, uid);
- for (key = ssh_get_first_identity(ac, &comment, 2); key != NULL; key = ssh_get_next_identity(ac, &comment, 2))
- {
- if(key != NULL) {
+ if ((r = ssh_fetch_identitylist(ac->fd, &idlist)) != 0) {
+ if (r != SSH_ERR_AGENT_NO_IDENTITIES)
+ fprintf(stderr, "error fetching identities for "
+ "protocol %d: %s\n", 2, ssh_err(r));
+ } else {
+ for (i = 0; i < idlist->nkeys; i++)
+ {
+ if (idlist->keys[i] != NULL) {
id = xcalloc(1, sizeof(*id));
- id->key = key;
- id->filename = comment;
+ id->key = idlist->keys[i];
+ id->filename = idlist->comments[i];
id->ac = ac;
if(userauth_pubkey_from_id(ruser, id, session_id2)) {
retval = 1;
}
- free(id->filename);
- key_free(id->key);
free(id);
if(retval == 1)
break;
- }
- }
+ }
+ }
- sshbuf_free(session_id2);
- ssh_close_authentication_connection(ac);
+ sshbuf_free(session_id2);
+ ssh_free_identitylist(idlist);
+ }
+ ssh_close_authentication_socket(ac->fd);
+ free(ac);
}
else {
verbose("No ssh-agent could be contacted");
diff -up openssh/pam_ssh_agent_auth-0.10.3/userauth_pubkey_from_id.c.psaa-agent openssh/pam_ssh_agent_auth-0.10.3/userauth_pubkey_from_id.c
--- openssh/pam_ssh_agent_auth-0.10.3/userauth_pubkey_from_id.c.psaa-agent 2017-09-27 14:25:49.420739021 +0200
+++ openssh/pam_ssh_agent_auth-0.10.3/userauth_pubkey_from_id.c 2017-09-27 14:25:49.422739032 +0200
@@ -84,7 +85,7 @@ userauth_pubkey_from_id(const char *ruse
(r = sshbuf_put_string(b, pkblob, blen)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
- if (ssh_agent_sign(id->ac, id->key, &sig, &slen, sshbuf_ptr(b), sshbuf_len(b)) != 0)
+ if (ssh_agent_sign(id->ac->fd, id->key, &sig, &slen, sshbuf_ptr(b), sshbuf_len(b), NULL, 0) != 0)
goto user_auth_clean_exit;
/* test for correct signature */

196
SOURCES/pam_ssh_agent_auth-0.9.3-build.patch Normal file
View File

@ -0,0 +1,196 @@
diff -up openssh-7.4p1/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c.psaa-build openssh-7.4p1/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c
--- openssh-7.4p1/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c.psaa-build 2016-11-13 04:24:32.000000000 +0100
+++ openssh-7.4p1/pam_ssh_agent_auth-0.10.3/iterate_ssh_agent_keys.c 2017-02-07 14:29:41.626116675 +0100
@@ -43,12 +43,31 @@
#include <openssl/evp.h>
#include "ssh2.h"
#include "misc.h"
+#include "ssh.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <fcntl.h>
#include "userauth_pubkey_from_id.h"
#include "identity.h"
#include "get_command_line.h"
extern char **environ;
+/*
+ * Added by Jamie Beverly, ensure socket fd points to a socket owned by the user
+ * A cursory check is done, but to avoid race conditions, it is necessary
+ * to drop effective UID when connecting to the socket.
+ *
+ * If the cause of error is EACCES, because we verified we would not have that
+ * problem initially, we can safely assume that somebody is attempting to find a
+ * race condition; so a more "direct" log message is generated.
+ */
+
static char *
log_action(char ** action, size_t count)
{
@@ -85,7 +104,7 @@ void
pamsshagentauth_session_id2_gen(Buffer * session_id2, const char * user,
const char * ruser, const char * servicename)
{
- char *cookie = NULL;
+ u_char *cookie = NULL;
uint8_t i = 0;
uint32_t rnd = 0;
uint8_t cookie_len;
@@ -112,7 +131,7 @@ pamsshagentauth_session_id2_gen(Buffer *
if (i % 4 == 0) {
rnd = pamsshagentauth_arc4random();
}
- cookie[i] = (char) rnd;
+ cookie[i] = (u_char) rnd;
rnd >>= 8;
}
@@ -177,6 +196,86 @@ pamsshagentauth_session_id2_gen(Buffer *
}
int
+ssh_get_authentication_socket_for_uid(uid_t uid)
+{
+ const char *authsocket;
+ int sock;
+ struct sockaddr_un sunaddr;
+ struct stat sock_st;
+
+ authsocket = getenv(SSH_AUTHSOCKET_ENV_NAME);
+ if (!authsocket)
+ return -1;
+
+ /* Advisory only; seteuid ensures no race condition; but will only log if we see EACCES */
+ if( stat(authsocket,&sock_st) == 0) {
+ if(uid != 0 && sock_st.st_uid != uid) {
+ fatal("uid %lu attempted to open an agent socket owned by uid %lu", (unsigned long) uid, (unsigned long) sock_st.st_uid);
+ return -1;
+ }
+ }
+
+ /*
+ * Ensures that the EACCES tested for below can _only_ happen if somebody
+ * is attempting to race the stat above to bypass authentication.
+ */
+ if( (sock_st.st_mode & S_IWUSR) != S_IWUSR || (sock_st.st_mode & S_IRUSR) != S_IRUSR) {
+ error("ssh-agent socket has incorrect permissions for owner");
+ return -1;
+ }
+
+ sunaddr.sun_family = AF_UNIX;
+ strlcpy(sunaddr.sun_path, authsocket, sizeof(sunaddr.sun_path));
+
+ sock = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (sock < 0)
+ return -1;
+
+ /* close on exec */
+ if (fcntl(sock, F_SETFD, 1) == -1) {
+ close(sock);
+ return -1;
+ }
+
+ errno = 0;
+ seteuid(uid); /* To ensure a race condition is not used to circumvent the stat
+ above, we will temporarily drop UID to the caller */
+ if (connect(sock, (struct sockaddr *)&sunaddr, sizeof sunaddr) < 0) {
+ close(sock);
+ if(errno == EACCES)
+ fatal("MAJOR SECURITY WARNING: uid %lu made a deliberate and malicious attempt to open an agent socket owned by another user", (unsigned long) uid);
+ return -1;
+ }
+
+ seteuid(0); /* we now continue the regularly scheduled programming */
+
+ return sock;
+}
+
+AuthenticationConnection *
+ssh_get_authentication_connection_for_uid(uid_t uid)
+{
+ AuthenticationConnection *auth;
+ int sock;
+
+ sock = ssh_get_authentication_socket_for_uid(uid);
+
+ /*
+ * Fail if we couldn't obtain a connection. This happens if we
+ * exited due to a timeout.
+ */
+ if (sock < 0)
+ return NULL;
+
+ auth = xmalloc(sizeof(*auth));
+ auth->fd = sock;
+ buffer_init(&auth->identities);
+ auth->howmany = 0;
+
+ return auth;
+}
+
+int
pamsshagentauth_find_authorized_keys(const char * user, const char * ruser, const char * servicename)
{
Buffer session_id2 = { 0 };
@@ -190,7 +289,7 @@ pamsshagentauth_find_authorized_keys(con
OpenSSL_add_all_digests();
pamsshagentauth_session_id2_gen(&session_id2, user, ruser, servicename);
- if ((ac = ssh_get_authentication_connection(uid))) {
+ if ((ac = ssh_get_authentication_connection_for_uid(uid))) {
pamsshagentauth_verbose("Contacted ssh-agent of user %s (%u)", ruser, uid);
for (key = ssh_get_first_identity(ac, &comment, 2); key != NULL; key = ssh_get_next_identity(ac, &comment, 2))
{
diff -up openssh-7.4p1/pam_ssh_agent_auth-0.10.3/Makefile.in.psaa-build openssh-7.4p1/pam_ssh_agent_auth-0.10.3/Makefile.in
--- openssh-7.4p1/pam_ssh_agent_auth-0.10.3/Makefile.in.psaa-build 2016-11-13 04:24:32.000000000 +0100
+++ openssh-7.4p1/pam_ssh_agent_auth-0.10.3/Makefile.in 2017-02-07 14:40:14.407566921 +0100
@@ -52,7 +52,7 @@ PATHS=
CC=@CC@
LD=@LD@
CFLAGS=@CFLAGS@
-CPPFLAGS=-I. -I$(srcdir) @CPPFLAGS@ $(PATHS) @DEFS@
+CPPFLAGS=-I.. -I$(srcdir) @CPPFLAGS@ $(PATHS) @DEFS@
LIBS=@LIBS@
AR=@AR@
AWK=@AWK@
@@ -61,7 +61,7 @@ INSTALL=@INSTALL@
PERL=@PERL@
SED=@SED@
ENT=@ENT@
-LDFLAGS=-L. -Lopenbsd-compat/ @LDFLAGS@
+LDFLAGS=-L.. -L../openbsd-compat/ @LDFLAGS@
LDFLAGS_SHARED = @LDFLAGS_SHARED@
EXEEXT=@EXEEXT@
@@ -74,7 +74,7 @@ SSHOBJS=xmalloc.o atomicio.o authfd.o bu
ED25519OBJS=ed25519-donna/ed25519.o
-PAM_SSH_AGENT_AUTH_OBJS=pam_user_key_allowed2.o iterate_ssh_agent_keys.o userauth_pubkey_from_id.o pam_user_authorized_keys.o get_command_line.o
+PAM_SSH_AGENT_AUTH_OBJS=pam_user_key_allowed2.o iterate_ssh_agent_keys.o userauth_pubkey_from_id.o pam_user_authorized_keys.o get_command_line.o secure_filename.o
MANPAGES_IN = pam_ssh_agent_auth.pod
@@ -94,13 +94,13 @@ $(PAM_MODULES): Makefile.in config.h
.c.o:
$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
-LIBCOMPAT=openbsd-compat/libopenbsd-compat.a
+LIBCOMPAT=../openbsd-compat/libopenbsd-compat.a
$(LIBCOMPAT): always
(cd openbsd-compat && $(MAKE))
always:
-pam_ssh_agent_auth.so: $(LIBCOMPAT) $(SSHOBJS) $(ED25519OBJS) $(PAM_SSH_AGENT_AUTH_OBJS) pam_ssh_agent_auth.o
- $(LD) $(LDFLAGS_SHARED) -o $@ $(SSHOBJS) $(ED25519OBJS) $(PAM_SSH_AGENT_AUTH_OBJS) $(LDFLAGS) -lopenbsd-compat pam_ssh_agent_auth.o $(LIBS) -lpam
+pam_ssh_agent_auth.so: $(PAM_SSH_AGENT_AUTH_OBJS) pam_ssh_agent_auth.o ../uidswap.o
+ $(LD) $(LDFLAGS_SHARED) -o $@ $(PAM_SSH_AGENT_AUTH_OBJS) $(LDFLAGS) -lssh -lopenbsd-compat pam_ssh_agent_auth.o ../uidswap.o $(LIBS) -lpam
$(MANPAGES): $(MANPAGES_IN)
pod2man --section=8 --release=v0.10.3 --name=pam_ssh_agent_auth --official --center "PAM" pam_ssh_agent_auth.pod > pam_ssh_agent_auth.8

8
SOURCES/ssh-keycat.pam Normal file
View File

@ -0,0 +1,8 @@
#%PAM-1.0
# pam_selinux.so close should be the first session rule
session required pam_selinux.so close
session required pam_loginuid.so
# pam_selinux.so open should only be followed by sessions to be executed in the user context
session required pam_selinux.so open env_params
session required pam_namespace.so

40
SOURCES/sshd-keygen Normal file
View File

@ -0,0 +1,40 @@
#!/bin/bash
# Create the host keys for the OpenSSH server.
KEYTYPE=$1
case $KEYTYPE in
"dsa") ;& # disabled in FIPS
"ed25519")
FIPS=/proc/sys/crypto/fips_enabled
if [[ -r "$FIPS" && $(cat $FIPS) == "1" ]]; then
exit 0
fi ;;
"rsa") ;; # always ok
"ecdsa") ;;
*) # wrong argument
exit 12 ;;
esac
KEY=/etc/ssh/ssh_host_${KEYTYPE}_key
KEYGEN=/usr/bin/ssh-keygen
if [[ ! -x $KEYGEN ]]; then
exit 13
fi
# remove old keys
rm -f $KEY{,.pub}
# create new keys
if ! $KEYGEN -q -t $KEYTYPE -f $KEY -C '' -N '' >&/dev/null; then
exit 1
fi
# sanitize permissions
/usr/bin/chgrp ssh_keys $KEY
/usr/bin/chmod 640 $KEY
/usr/bin/chmod 644 $KEY.pub
if [[ -x /usr/sbin/restorecon ]]; then
/usr/sbin/restorecon $KEY{,.pub}
fi
exit 0

5
SOURCES/sshd-keygen.target Normal file
View File

@ -0,0 +1,5 @@
[Unit]
Wants=sshd-keygen@rsa.service
Wants=sshd-keygen@ecdsa.service
Wants=sshd-keygen@ed25519.service
PartOf=sshd.service

11
SOURCES/sshd-keygen@.service Normal file
View File

@ -0,0 +1,11 @@
[Unit]
Description=OpenSSH %i Server Key Generation
ConditionFileNotEmpty=|!/etc/ssh/ssh_host_%i_key
[Service]
Type=oneshot
EnvironmentFile=-/etc/sysconfig/sshd
ExecStart=/usr/libexec/openssh/sshd-keygen %i
[Install]
WantedBy=sshd-keygen.target

17
SOURCES/sshd.pam Normal file
View File

@ -0,0 +1,17 @@
#%PAM-1.0
auth substack password-auth
auth include postlogin
account required pam_sepermit.so
account required pam_nologin.so
account include password-auth
password include password-auth
# pam_selinux.so close should be the first session rule
session required pam_selinux.so close
session required pam_loginuid.so
# pam_selinux.so open should only be followed by sessions to be executed in the user context
session required pam_selinux.so open env_params
session required pam_namespace.so
session optional pam_keyinit.so force revoke
session optional pam_motd.so
session include password-auth
session include postlogin

18
SOURCES/sshd.service Normal file
View File

@ -0,0 +1,18 @@
[Unit]
Description=OpenSSH server daemon
Documentation=man:sshd(8) man:sshd_config(5)
After=network.target sshd-keygen.target
Wants=sshd-keygen.target
[Service]
Type=notify
EnvironmentFile=-/etc/crypto-policies/back-ends/opensshserver.config
EnvironmentFile=-/etc/sysconfig/sshd
ExecStart=/usr/sbin/sshd -D $OPTIONS $CRYPTO_POLICY
ExecReload=/bin/kill -HUP $MAINPID
KillMode=process
Restart=on-failure
RestartSec=42s
[Install]
WantedBy=multi-user.target

11
SOURCES/sshd.socket Normal file
View File

@ -0,0 +1,11 @@
[Unit]
Description=OpenSSH Server Socket
Documentation=man:sshd(8) man:sshd_config(5)
Conflicts=sshd.service
[Socket]
ListenStream=22
Accept=yes
[Install]
WantedBy=sockets.target

11
SOURCES/sshd.sysconfig Normal file
View File

@ -0,0 +1,11 @@
# Configuration file for the sshd service.
# The server keys are automatically generated if they are missing.
# To change the automatic creation, adjust sshd.service options for
# example using systemctl enable sshd-keygen@dsa.service to allow creation
# of DSA key or systemctl mask sshd-keygen@rsa.service to disable RSA key
# creation.
# System-wide crypto policy:
# To opt-out, uncomment the following line
# CRYPTO_POLICY=

1
SOURCES/sshd.tmpfiles Normal file
View File

@ -0,0 +1 @@
d /var/empty/sshd 711 root root -

11
SOURCES/sshd@.service Normal file
View File

@ -0,0 +1,11 @@
[Unit]
Description=OpenSSH per-connection server daemon
Documentation=man:sshd(8) man:sshd_config(5)
Wants=sshd-keygen.target
After=sshd-keygen.target
[Service]
EnvironmentFile=-/etc/crypto-policies/back-ends/opensshserver.config
EnvironmentFile=-/etc/sysconfig/sshd
ExecStart=-/usr/sbin/sshd -i $OPTIONS $CRYPTO_POLICY
StandardInput=socket

2817
SPECS/openssh.spec Normal file
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