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3d2c14680b
openssh/openssh-7.2p1-fips.patch
Jakub Jelen 3d2c14680b Soft-deny socket() syscall in seccomp sandbox (#1324493) 
* Used for  ecdh-sha2-nistp*  key exchange methods in FIPS mode
2016-04-11 16:14:25 +02:00

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diff -up openssh-7.2p1/cipher.c.fips openssh-7.2p1/cipher.c
--- openssh-7.2p1/cipher.c.fips 2016-02-12 18:53:56.083665235 +0100
+++ openssh-7.2p1/cipher.c 2016-02-12 18:53:56.090665235 +0100
@@ -39,6 +39,8 @@
#include <sys/types.h>
+#include <openssl/fips.h>
+
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
@@ -99,6 +101,26 @@ static const struct sshcipher ciphers[]
{ NULL, SSH_CIPHER_INVALID, 0, 0, 0, 0, 0, 0, NULL }
};
+static const struct sshcipher fips_ciphers[] = {
+ { "none", SSH_CIPHER_NONE, 8, 0, 0, 0, 0, 0, EVP_enc_null },
+ { "3des-cbc", SSH_CIPHER_SSH2, 8, 24, 0, 0, 0, 1, EVP_des_ede3_cbc },
+ { "aes128-cbc", SSH_CIPHER_SSH2, 16, 16, 0, 0, 0, 1, EVP_aes_128_cbc },
+ { "aes192-cbc", SSH_CIPHER_SSH2, 16, 24, 0, 0, 0, 1, EVP_aes_192_cbc },
+ { "aes256-cbc", SSH_CIPHER_SSH2, 16, 32, 0, 0, 0, 1, EVP_aes_256_cbc },
+ { "rijndael-cbc@lysator.liu.se",
+ SSH_CIPHER_SSH2, 16, 32, 0, 0, 0, 1, EVP_aes_256_cbc },
+ { "aes128-ctr", SSH_CIPHER_SSH2, 16, 16, 0, 0, 0, 0, EVP_aes_128_ctr },
+ { "aes192-ctr", SSH_CIPHER_SSH2, 16, 24, 0, 0, 0, 0, EVP_aes_192_ctr },
+ { "aes256-ctr", SSH_CIPHER_SSH2, 16, 32, 0, 0, 0, 0, EVP_aes_256_ctr },
+#ifdef OPENSSL_HAVE_EVPGCM
+ { "aes128-gcm@openssh.com",
+ SSH_CIPHER_SSH2, 16, 16, 12, 16, 0, 0, EVP_aes_128_gcm },
+ { "aes256-gcm@openssh.com",
+ SSH_CIPHER_SSH2, 16, 32, 12, 16, 0, 0, EVP_aes_256_gcm },
+#endif
+ { NULL, SSH_CIPHER_INVALID, 0, 0, 0, 0, 0, 0, NULL }
+};
+
/*--*/
/* Returns a comma-separated list of supported ciphers. */
@@ -109,7 +131,7 @@ 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->number != SSH_CIPHER_SSH2)
continue;
if (auth_only && c->auth_len == 0)
@@ -193,7 +215,7 @@ 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;
@@ -203,7 +225,7 @@ const struct sshcipher *
cipher_by_number(int id)
{
const struct sshcipher *c;
- for (c = ciphers; c->name != NULL; c++)
+ for (c = FIPS_mode() ? fips_ciphers : ciphers; c->name != NULL; c++)
if (c->number == id)
return c;
return NULL;
@@ -244,7 +266,7 @@ cipher_number(const char *name)
const struct sshcipher *c;
if (name == NULL)
return -1;
- for (c = ciphers; c->name != NULL; c++)
+ for (c = FIPS_mode() ? fips_ciphers : ciphers; c->name != NULL; c++)
if (strcasecmp(c->name, name) == 0)
return c->number;
return -1;
diff -up openssh-7.2p1/cipher-ctr.c.fips openssh-7.2p1/cipher-ctr.c
--- openssh-7.2p1/cipher-ctr.c.fips 2016-02-12 18:53:56.013665228 +0100
+++ openssh-7.2p1/cipher-ctr.c 2016-02-12 18:53:56.090665235 +0100
@@ -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-7.2p1/dh.h.fips openssh-7.2p1/dh.h
--- openssh-7.2p1/dh.h.fips 2016-02-12 18:53:56.090665235 +0100
+++ openssh-7.2p1/dh.h 2016-02-12 18:54:48.425670204 +0100
@@ -49,6 +49,7 @@ 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-7.2p1/entropy.c.fips openssh-7.2p1/entropy.c
--- openssh-7.2p1/entropy.c.fips 2016-02-12 18:53:56.005665227 +0100
+++ openssh-7.2p1/entropy.c 2016-02-12 18:53:56.091665235 +0100
@@ -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-7.2p1/kex.c.fips openssh-7.2p1/kex.c
--- openssh-7.2p1/kex.c.fips 2016-02-12 18:53:56.084665234 +0100
+++ openssh-7.2p1/kex.c 2016-02-12 18:53:56.091665235 +0100
@@ -35,6 +35,7 @@
#ifdef WITH_OPENSSL
#include <openssl/crypto.h>
+#include <openssl/fips.h>
#endif
#include "ssh2.h"
@@ -121,6 +122,25 @@ static const struct kexalg kexalgs[] = {
{ NULL, -1, -1, -1},
};
+static const struct kexalg kexalgs_fips[] = {
+ { KEX_DH14, KEX_DH_GRP14_SHA1, 0, SSH_DIGEST_SHA1 },
+ { KEX_DHGEX_SHA1, KEX_DH_GEX_SHA1, 0, SSH_DIGEST_SHA1 },
+#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)
{
@@ -148,7 +168,7 @@ 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
@@ -174,7 +194,10 @@ 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-7.2p1/kexgexc.c.fips openssh-7.2p1/kexgexc.c
--- openssh-7.2p1/kexgexc.c.fips 2016-02-12 11:47:25.000000000 +0100
+++ openssh-7.2p1/kexgexc.c 2016-02-12 18:53:56.091665235 +0100
@@ -28,6 +28,7 @@
#ifdef WITH_OPENSSL
+#include <openssl/fips.h>
#include <sys/param.h>
#include <sys/types.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-7.2p1/kexgexs.c.fips openssh-7.2p1/kexgexs.c
--- openssh-7.2p1/kexgexs.c.fips 2016-02-12 11:47:25.000000000 +0100
+++ openssh-7.2p1/kexgexs.c 2016-02-12 18:53:56.091665235 +0100
@@ -83,9 +83,9 @@ input_kex_dh_gex_request(int type, u_int
kex->nbits = nbits;
kex->min = min;
kex->max = max;
- min = MAX(DH_GRP_MIN, min);
+ min = MAX(FIPS_mode() ? DH_GRP_MIN_FIPS : DH_GRP_MIN, min);
max = MIN(DH_GRP_MAX, max);
- nbits = MAX(DH_GRP_MIN, nbits);
+ nbits = MAX(FIPS_mode() ? DH_GRP_MIN_FIPS : DH_GRP_MIN, nbits);
nbits = MIN(DH_GRP_MAX, nbits);
if (kex->max < kex->min || kex->nbits < kex->min ||
diff -up openssh-7.2p1/mac.c.fips openssh-7.2p1/mac.c
--- openssh-7.2p1/mac.c.fips 2016-02-12 18:53:56.084665234 +0100
+++ openssh-7.2p1/mac.c 2016-02-12 18:53:56.091665235 +0100
@@ -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 },
@@ -85,6 +87,24 @@ 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)
@@ -93,7 +113,7 @@ 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);
@@ -132,7 +152,7 @@ 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-7.2p1/Makefile.in.fips openssh-7.2p1/Makefile.in
--- openssh-7.2p1/Makefile.in.fips 2016-02-12 18:53:56.085665235 +0100
+++ openssh-7.2p1/Makefile.in 2016-02-12 18:53:56.092665235 +0100
@@ -168,25 +168,25 @@ 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 utf8_stringprep.o
$(LD) -o $@ scp.o progressmeter.o bufaux.o utf8_stringprep.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
- $(LD) -o $@ ssh-keysign.o readconf.o $(LDFLAGS) -lssh -lopenbsd-compat $(LIBS)
+ $(LD) -o $@ ssh-keysign.o readconf.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 $(LIBS)
@@ -204,7 +204,7 @@ ssh-cavs$(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-7.2p1/myproposal.h.fips openssh-7.2p1/myproposal.h
--- openssh-7.2p1/myproposal.h.fips 2016-02-12 18:53:56.092665235 +0100
+++ openssh-7.2p1/myproposal.h 2016-02-12 18:55:42.137675304 +0100
@@ -129,6 +129,28 @@
#define KEX_CLIENT_MAC KEX_SERVER_MAC
+#define KEX_DEFAULT_KEX_FIPS \
+ KEX_ECDH_METHODS \
+ KEX_SHA256_METHODS \
+ "diffie-hellman-group-exchange-sha1," \
+ "diffie-hellman-group14-sha1"
+#define KEX_FIPS_ENCRYPT \
+ "aes128-ctr,aes192-ctr,aes256-ctr," \
+ "aes128-cbc,3des-cbc," \
+ "aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se"
+#ifdef HAVE_EVP_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
+#define KEX_FIPS_MAC \
+ "hmac-sha1"
+#endif
+
#else /* WITH_OPENSSL */
#define KEX_SERVER_KEX \
diff -up openssh-7.2p1/readconf.c.fips openssh-7.2p1/readconf.c
--- openssh-7.2p1/readconf.c.fips 2016-02-12 18:53:56.073665234 +0100
+++ openssh-7.2p1/readconf.c 2016-02-12 18:53:56.092665235 +0100
@@ -1969,9 +1969,12 @@ fill_default_options(Options * options)
}
if (options->update_hostkeys == -1)
options->update_hostkeys = 0;
- if (kex_assemble_names(KEX_CLIENT_ENCRYPT, &options->ciphers) != 0 ||
- kex_assemble_names(KEX_CLIENT_MAC, &options->macs) != 0 ||
- kex_assemble_names(KEX_CLIENT_KEX, &options->kex_algorithms) != 0 ||
+ if (kex_assemble_names((FIPS_mode() ? KEX_FIPS_ENCRYPT
+ : KEX_CLIENT_ENCRYPT), &options->ciphers) != 0 ||
+ kex_assemble_names((FIPS_mode() ? KEX_FIPS_MAC
+ : KEX_CLIENT_MAC), &options->macs) != 0 ||
+ kex_assemble_names((FIPS_mode() ? KEX_DEFAULT_KEX_FIPS
+ : KEX_CLIENT_KEX), &options->kex_algorithms) != 0 ||
kex_assemble_names(KEX_DEFAULT_PK_ALG,
&options->hostbased_key_types) != 0 ||
kex_assemble_names(KEX_DEFAULT_PK_ALG,
diff -up openssh-7.2p1/servconf.c.fips openssh-7.2p1/servconf.c
--- openssh-7.2p1/servconf.c.fips 2016-02-12 18:53:56.068665233 +0100
+++ openssh-7.2p1/servconf.c 2016-02-12 18:56:52.185681954 +0100
@@ -188,9 +188,12 @@ option_clear_or_none(const char *o)
static void
assemble_algorithms(ServerOptions *o)
{
- if (kex_assemble_names(KEX_SERVER_ENCRYPT, &o->ciphers) != 0 ||
- kex_assemble_names(KEX_SERVER_MAC, &o->macs) != 0 ||
- kex_assemble_names(KEX_SERVER_KEX, &o->kex_algorithms) != 0 ||
+ if (kex_assemble_names((FIPS_mode() ? KEX_FIPS_ENCRYPT
+ : KEX_SERVER_ENCRYPT), &o->ciphers) != 0 ||
+ kex_assemble_names((FIPS_mode() ? KEX_FIPS_MAC
+ : KEX_SERVER_MAC), &o->macs) != 0 ||
+ kex_assemble_names((FIPS_mode() ? KEX_DEFAULT_KEX_FIPS
+ : KEX_SERVER_KEX), &o->kex_algorithms) != 0 ||
kex_assemble_names(KEX_DEFAULT_PK_ALG,
&o->hostkeyalgorithms) != 0 ||
kex_assemble_names(KEX_DEFAULT_PK_ALG,
@@ -2376,8 +2379,10 @@ dump_config(ServerOptions *o)
/* string arguments */
dump_cfg_string(sPidFile, o->pid_file);
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(sCiphers, o->ciphers ? o->ciphers : FIPS_mode()
+ ? KEX_FIPS_ENCRYPT : KEX_SERVER_ENCRYPT);
+ dump_cfg_string(sMacs, o->macs ? o->macs : FIPS_mode()
+ ? KEX_FIPS_MAC : KEX_SERVER_MAC);
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);
@@ -2392,8 +2397,8 @@ dump_config(ServerOptions *o)
dump_cfg_string(sAuthorizedPrincipalsCommand, o->authorized_principals_command);
dump_cfg_string(sAuthorizedPrincipalsCommandUser, o->authorized_principals_command_user);
dump_cfg_string(sHostKeyAgent, o->host_key_agent);
- dump_cfg_string(sKexAlgorithms,
- o->kex_algorithms ? o->kex_algorithms : KEX_SERVER_KEX);
+ dump_cfg_string(sKexAlgorithms, o->kex_algorithms ? o->kex_algorithms :
+ FIPS_mode() ? KEX_DEFAULT_KEX_FIPS : KEX_SERVER_KEX);
dump_cfg_string(sHostbasedAcceptedKeyTypes, o->hostbased_key_types ?
o->hostbased_key_types : KEX_DEFAULT_PK_ALG);
dump_cfg_string(sHostKeyAlgorithms, o->hostkeyalgorithms ?
diff -up openssh-7.2p1/ssh.c.fips openssh-7.2p1/ssh.c
--- openssh-7.2p1/ssh.c.fips 2016-02-12 11:47:25.000000000 +0100
+++ openssh-7.2p1/ssh.c 2016-02-12 18:53:56.093665236 +0100
@@ -75,6 +75,8 @@
#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"
@@ -531,6 +533,14 @@ 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 */
@@ -608,6 +618,9 @@ main(int ac, char **av)
"ACD:E:F:GI:KL:MNO:PQ:R:S:TVw:W:XYy")) != -1) {
switch (opt) {
case '1':
+ if (FIPS_mode()) {
+ fatal("Protocol 1 not allowed in the FIPS mode.");
+ }
options.protocol = SSH_PROTO_1;
break;
case '2':
@@ -952,7 +965,6 @@ main(int ac, char **av)
host_arg = xstrdup(host);
#ifdef WITH_OPENSSL
- OpenSSL_add_all_algorithms();
ERR_load_crypto_strings();
#endif
@@ -1126,6 +1138,10 @@ main(int ac, char **av)
seed_rng();
+ if (FIPS_mode()) {
+ logit("FIPS mode initialized");
+ }
+
if (options.user == NULL)
options.user = xstrdup(pw->pw_name);
@@ -1206,6 +1222,12 @@ main(int ac, char **av)
timeout_ms = options.connection_timeout * 1000;
+ if (FIPS_mode()) {
+ options.protocol &= SSH_PROTO_2;
+ if (options.protocol == 0)
+ fatal("Protocol 2 disabled by configuration but required in the FIPS mode.");
+ }
+
/* Open a connection to the remote host. */
if (ssh_connect(host, addrs, &hostaddr, options.port,
options.address_family, options.connection_attempts,
diff -up openssh-7.2p1/sshconnect2.c.fips openssh-7.2p1/sshconnect2.c
--- openssh-7.2p1/sshconnect2.c.fips 2016-02-12 18:53:56.074665234 +0100
+++ openssh-7.2p1/sshconnect2.c 2016-02-12 18:53:56.094665236 +0100
@@ -44,6 +44,8 @@
#include <vis.h>
#endif
+#include <openssl/fips.h>
+
#include "openbsd-compat/sys-queue.h"
#include "xmalloc.h"
@@ -171,21 +173,26 @@ 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_trust_dns)
- gss_host = (char *)get_canonical_hostname(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_trust_dns)
+ gss_host = (char *)get_canonical_hostname(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
diff -up openssh-7.2p1/sshd.c.fips openssh-7.2p1/sshd.c
--- openssh-7.2p1/sshd.c.fips 2016-02-12 18:53:56.088665235 +0100
+++ openssh-7.2p1/sshd.c 2016-02-12 18:53:56.094665236 +0100
@@ -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
@@ -1555,6 +1558,18 @@ 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;
@@ -1707,7 +1722,7 @@ main(int ac, char **av)
else
closefrom(REEXEC_DEVCRYPTO_RESERVED_FD);
-#ifdef WITH_OPENSSL
+#if 0 /* FIPS */
OpenSSL_add_all_algorithms();
#endif
@@ -1906,6 +1921,10 @@ main(int ac, char **av)
sshkey_type(pubkey) : sshkey_ssh_name(pubkey), fp);
free(fp);
}
+ if ((options.protocol & SSH_PROTO_1) && FIPS_mode()) {
+ logit("Disabling protocol version 1. Not allowed in the FIPS mode.");
+ options.protocol &= ~SSH_PROTO_1;
+ }
if ((options.protocol & SSH_PROTO_1) && !sensitive_data.have_ssh1_key) {
logit("Disabling protocol version 1. Could not load host key");
options.protocol &= ~SSH_PROTO_1;
@@ -2074,6 +2093,10 @@ 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)
@@ -2695,10 +2718,14 @@ 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-7.2p1/sshkey.c.fips openssh-7.2p1/sshkey.c
--- openssh-7.2p1/sshkey.c.fips 2016-02-12 18:53:56.089665235 +0100
+++ openssh-7.2p1/sshkey.c 2016-02-12 18:53:56.095665236 +0100
@@ -35,6 +35,7 @@
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/pem.h>
+#include <openssl/fips.h>
#endif
#include "crypto_api.h"
@@ -1554,6 +1555,8 @@ 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 --git a/pam_ssh_agent_auth-0.10.2/pam_user_key_allowed2.c b/pam_ssh_agent_auth-0.10.2/pam_user_key_allowed2.c
index 688b1b1..a3c1541 100644
--- a/pam_ssh_agent_auth-0.10.2/pam_user_key_allowed2.c
+++ b/pam_ssh_agent_auth-0.10.2/pam_user_key_allowed2.c
@@ -55,6 +55,7 @@
#include "secure_filename.h"
#include "uidswap.h"
#include <unistd.h>
+#include <openssl/crypto.h>
#include "identity.h"
@@ -104,7 +105,8 @@ pamsshagentauth_check_authkeys_file(FILE * f, char *file, Key * key)
found_key = 1;
logit("matching key found: file/command %s, line %lu", file,
linenum);
- fp = sshkey_fingerprint(found, SSH_DIGEST_MD5, SSH_FP_HEX);
+ fp = sshkey_fingerprint(found, FIPS_mode() ? SSH_DIGEST_SHA1 : SSH_DIGEST_MD5,
+ SSH_FP_HEX);
logit("Found matching %s key: %s",
key_type(found), fp);
free(fp);
diff --git a/cipher.c b/cipher.c
index f282907..51bbffb 100644
--- a/cipher.c
+++ b/cipher.c
@@ -112,12 +112,6 @@ static const struct sshcipher fips_ciphers[] = {
{ "aes128-ctr", SSH_CIPHER_SSH2, 16, 16, 0, 0, 0, 0, EVP_aes_128_ctr },
{ "aes192-ctr", SSH_CIPHER_SSH2, 16, 24, 0, 0, 0, 0, EVP_aes_192_ctr },
{ "aes256-ctr", SSH_CIPHER_SSH2, 16, 32, 0, 0, 0, 0, EVP_aes_256_ctr },
-#ifdef OPENSSL_HAVE_EVPGCM
- { "aes128-gcm@openssh.com",
- SSH_CIPHER_SSH2, 16, 16, 12, 16, 0, 0, EVP_aes_128_gcm },
- { "aes256-gcm@openssh.com",
- SSH_CIPHER_SSH2, 16, 32, 12, 16, 0, 0, EVP_aes_256_gcm },
-#endif
{ NULL, SSH_CIPHER_INVALID, 0, 0, 0, 0, 0, 0, NULL }
};
diff --git a/kex.c b/kex.c
index f07a636..4ce5843 100644
--- a/kex.c
+++ b/kex.c
@@ -123,8 +123,6 @@ static const struct kexalg kexalgs[] = {
};
static const struct kexalg kexalgs_fips[] = {
- { KEX_DH14, KEX_DH_GRP14_SHA1, 0, SSH_DIGEST_SHA1 },
- { KEX_DHGEX_SHA1, KEX_DH_GEX_SHA1, 0, SSH_DIGEST_SHA1 },
#ifdef HAVE_EVP_SHA256
{ KEX_DHGEX_SHA256, KEX_DH_GEX_SHA256, 0, SSH_DIGEST_SHA256 },
#endif
diff --git a/myproposal.h b/myproposal.h
index 7efe312..bcf2ae1 100644
--- a/myproposal.h
+++ b/myproposal.h
@@ -131,9 +131,7 @@
#define KEX_DEFAULT_KEX_FIPS \
KEX_ECDH_METHODS \
- KEX_SHA256_METHODS \
- "diffie-hellman-group-exchange-sha1," \
- "diffie-hellman-group14-sha1"
+ KEX_SHA256_METHODS
#define KEX_FIPS_ENCRYPT \
"aes128-ctr,aes192-ctr,aes256-ctr," \
"aes128-cbc,3des-cbc," \
diff --git a/sandbox-seccomp-filter.c b/sandbox-seccomp-filter.c
index a3975eb..5224084 100644
--- a/sandbox-seccomp-filter.c
+++ b/sandbox-seccomp-filter.c
@@ -112,6 +112,9 @@ static const struct sock_filter preauth_insns[] = {
#ifdef __NR_open
SC_DENY(open, EACCES),
#endif
+#ifdef __NR_socket
+ SC_DENY(socket, EACCES),
+#endif
#ifdef __NR_openat
SC_DENY(openat, EACCES),
#endif
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