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- clean the data structures in the privileged process

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This commit is contained in:
Jan F 2011-02-02 09:28:26 +01:00
parent 6f931660c8
commit f32d86bd8a
3 changed files with 57 additions and 39 deletions
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90
openssh-5.6p1-audit5.patch
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@ -1,6 +1,6 @@
diff -up openssh-5.6p1/audit-bsm.c.audit5 openssh-5.6p1/audit-bsm.c
--- openssh-5.6p1/audit-bsm.c.audit5 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/audit-bsm.c 2011-01-31 16:03:38.000000000 +0100
--- openssh-5.6p1/audit-bsm.c.audit5 2011-02-02 08:23:04.000000000 +0100
+++ openssh-5.6p1/audit-bsm.c 2011-02-02 08:23:05.000000000 +0100
@@ -401,4 +401,10 @@ audit_session_key_free_body(int ctos)
{
/* not implemented */
@ -13,8 +13,8 @@ diff -up openssh-5.6p1/audit-bsm.c.audit5 openssh-5.6p1/audit-bsm.c
+}
#endif /* BSM */
diff -up openssh-5.6p1/audit.c.audit5 openssh-5.6p1/audit.c
--- openssh-5.6p1/audit.c.audit5 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/audit.c 2011-01-31 16:03:38.000000000 +0100
--- openssh-5.6p1/audit.c.audit5 2011-02-02 08:23:04.000000000 +0100
+++ openssh-5.6p1/audit.c 2011-02-02 08:23:05.000000000 +0100
@@ -268,5 +268,14 @@ audit_session_key_free_body(int ctos)
{
debug("audit session key discard euid %d direction %d", geteuid(), ctos);
@ -31,8 +31,8 @@ diff -up openssh-5.6p1/audit.c.audit5 openssh-5.6p1/audit.c
# endif /* !defined CUSTOM_SSH_AUDIT_EVENTS */
#endif /* SSH_AUDIT_EVENTS */
diff -up openssh-5.6p1/audit.h.audit5 openssh-5.6p1/audit.h
--- openssh-5.6p1/audit.h.audit5 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/audit.h 2011-01-31 16:03:38.000000000 +0100
--- openssh-5.6p1/audit.h.audit5 2011-02-02 08:23:04.000000000 +0100
+++ openssh-5.6p1/audit.h 2011-02-02 08:23:05.000000000 +0100
@@ -62,5 +62,6 @@ void audit_unsupported_body(int);
void audit_kex_body(int, char *, char *, char *);
void audit_session_key_free(int ctos);
@ -41,8 +41,8 @@ diff -up openssh-5.6p1/audit.h.audit5 openssh-5.6p1/audit.h
#endif /* _SSH_AUDIT_H */
diff -up openssh-5.6p1/audit-linux.c.audit5 openssh-5.6p1/audit-linux.c
--- openssh-5.6p1/audit-linux.c.audit5 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/audit-linux.c 2011-01-31 16:03:38.000000000 +0100
--- openssh-5.6p1/audit-linux.c.audit5 2011-02-02 08:23:04.000000000 +0100
+++ openssh-5.6p1/audit-linux.c 2011-02-02 08:23:05.000000000 +0100
@@ -226,4 +226,26 @@ audit_session_key_free_body(int ctos)
error("cannot write into audit");
}
@ -71,8 +71,8 @@ diff -up openssh-5.6p1/audit-linux.c.audit5 openssh-5.6p1/audit-linux.c
+
#endif /* USE_LINUX_AUDIT */
diff -up openssh-5.6p1/kex.c.audit5 openssh-5.6p1/kex.c
--- openssh-5.6p1/kex.c.audit5 2011-01-31 16:03:37.000000000 +0100
+++ openssh-5.6p1/kex.c 2011-01-31 16:03:38.000000000 +0100
--- openssh-5.6p1/kex.c.audit5 2011-02-02 08:23:04.000000000 +0100
+++ openssh-5.6p1/kex.c 2011-02-02 08:36:45.000000000 +0100
@@ -592,3 +592,34 @@ dump_digest(char *msg, u_char *digest, i
fprintf(stderr, "\n");
}
@ -110,7 +110,7 @@ diff -up openssh-5.6p1/kex.c.audit5 openssh-5.6p1/kex.c
+
diff -up openssh-5.6p1/kex.h.audit5 openssh-5.6p1/kex.h
--- openssh-5.6p1/kex.h.audit5 2010-02-26 21:55:05.000000000 +0100
+++ openssh-5.6p1/kex.h 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/kex.h 2011-02-02 08:23:05.000000000 +0100
@@ -146,6 +146,8 @@ void kexdh_server(Kex *);
void kexgex_client(Kex *);
void kexgex_server(Kex *);
@ -122,8 +122,8 @@ diff -up openssh-5.6p1/kex.h.audit5 openssh-5.6p1/kex.h
BIGNUM *, BIGNUM *, BIGNUM *, u_char **, u_int *);
diff -up openssh-5.6p1/mac.c.audit5 openssh-5.6p1/mac.c
--- openssh-5.6p1/mac.c.audit5 2008-06-13 02:58:50.000000000 +0200
+++ openssh-5.6p1/mac.c 2011-01-31 16:03:38.000000000 +0100
@@ -162,6 +162,22 @@ mac_clear(Mac *mac)
+++ openssh-5.6p1/mac.c 2011-02-02 08:25:02.000000000 +0100
@@ -162,6 +162,20 @@ mac_clear(Mac *mac)
mac->umac_ctx = NULL;
}
@ -133,8 +133,6 @@ diff -up openssh-5.6p1/mac.c.audit5 openssh-5.6p1/mac.c
+ if (mac == NULL)
+ return;
+
+ mac_clear(mac);
+
+ if (mac->key) {
+ memset(mac->key, 0, mac->key_len);
+ xfree(mac->key);
@ -148,15 +146,15 @@ diff -up openssh-5.6p1/mac.c.audit5 openssh-5.6p1/mac.c
int
diff -up openssh-5.6p1/mac.h.audit5 openssh-5.6p1/mac.h
--- openssh-5.6p1/mac.h.audit5 2007-06-11 06:01:42.000000000 +0200
+++ openssh-5.6p1/mac.h 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/mac.h 2011-02-02 08:23:05.000000000 +0100
@@ -28,3 +28,4 @@ int mac_setup(Mac *, char *);
int mac_init(Mac *);
u_char *mac_compute(Mac *, u_int32_t, u_char *, int);
void mac_clear(Mac *);
+void mac_destroy(Mac *);
diff -up openssh-5.6p1/monitor.c.audit5 openssh-5.6p1/monitor.c
--- openssh-5.6p1/monitor.c.audit5 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/monitor.c 2011-01-31 16:03:38.000000000 +0100
--- openssh-5.6p1/monitor.c.audit5 2011-02-02 08:23:05.000000000 +0100
+++ openssh-5.6p1/monitor.c 2011-02-02 08:23:05.000000000 +0100
@@ -181,6 +181,7 @@ int mm_answer_audit_command(int, Buffer
int mm_answer_audit_unsupported_body(int, Buffer *);
int mm_answer_audit_kex_body(int, Buffer *);
@ -214,8 +212,8 @@ diff -up openssh-5.6p1/monitor.c.audit5 openssh-5.6p1/monitor.c
+}
#endif /* SSH_AUDIT_EVENTS */
diff -up openssh-5.6p1/monitor.h.audit5 openssh-5.6p1/monitor.h
--- openssh-5.6p1/monitor.h.audit5 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/monitor.h 2011-01-31 16:03:38.000000000 +0100
--- openssh-5.6p1/monitor.h.audit5 2011-02-02 08:23:05.000000000 +0100
+++ openssh-5.6p1/monitor.h 2011-02-02 08:23:05.000000000 +0100
@@ -69,6 +69,7 @@ enum monitor_reqtype {
MONITOR_REQ_AUDIT_UNSUPPORTED, MONITOR_ANS_AUDIT_UNSUPPORTED,
MONITOR_REQ_AUDIT_KEX, MONITOR_ANS_AUDIT_KEX,
@ -225,8 +223,8 @@ diff -up openssh-5.6p1/monitor.h.audit5 openssh-5.6p1/monitor.h
struct mm_master;
diff -up openssh-5.6p1/monitor_wrap.c.audit5 openssh-5.6p1/monitor_wrap.c
--- openssh-5.6p1/monitor_wrap.c.audit5 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/monitor_wrap.c 2011-01-31 16:03:38.000000000 +0100
--- openssh-5.6p1/monitor_wrap.c.audit5 2011-02-02 08:23:05.000000000 +0100
+++ openssh-5.6p1/monitor_wrap.c 2011-02-02 08:23:05.000000000 +0100
@@ -1458,4 +1458,16 @@ mm_audit_session_key_free_body(int ctos)
&m);
buffer_free(&m);
@ -245,8 +243,8 @@ diff -up openssh-5.6p1/monitor_wrap.c.audit5 openssh-5.6p1/monitor_wrap.c
+}
#endif /* SSH_AUDIT_EVENTS */
diff -up openssh-5.6p1/monitor_wrap.h.audit5 openssh-5.6p1/monitor_wrap.h
--- openssh-5.6p1/monitor_wrap.h.audit5 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/monitor_wrap.h 2011-01-31 16:03:38.000000000 +0100
--- openssh-5.6p1/monitor_wrap.h.audit5 2011-02-02 08:23:05.000000000 +0100
+++ openssh-5.6p1/monitor_wrap.h 2011-02-02 08:23:05.000000000 +0100
@@ -77,6 +77,7 @@ void mm_audit_run_command(const char *);
void mm_audit_unsupported_body(int);
void mm_audit_kex_body(int, char *, char *, char *);
@ -256,8 +254,8 @@ diff -up openssh-5.6p1/monitor_wrap.h.audit5 openssh-5.6p1/monitor_wrap.h
struct Session;
diff -up openssh-5.6p1/packet.c.audit5 openssh-5.6p1/packet.c
--- openssh-5.6p1/packet.c.audit5 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/packet.c 2011-01-31 16:03:38.000000000 +0100
--- openssh-5.6p1/packet.c.audit5 2011-02-02 08:23:05.000000000 +0100
+++ openssh-5.6p1/packet.c 2011-02-02 08:23:05.000000000 +0100
@@ -60,6 +60,7 @@
#include <signal.h>
@ -316,7 +314,7 @@ diff -up openssh-5.6p1/packet.c.audit5 openssh-5.6p1/packet.c
+}
diff -up openssh-5.6p1/packet.h.audit5 openssh-5.6p1/packet.h
--- openssh-5.6p1/packet.h.audit5 2009-07-05 23:11:13.000000000 +0200
+++ openssh-5.6p1/packet.h 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/packet.h 2011-02-02 08:23:05.000000000 +0100
@@ -115,4 +115,5 @@ void packet_restore_state(void);
void *packet_get_input(void);
void *packet_get_output(void);
@ -325,7 +323,7 @@ diff -up openssh-5.6p1/packet.h.audit5 openssh-5.6p1/packet.h
#endif /* PACKET_H */
diff -up openssh-5.6p1/session.c.audit5 openssh-5.6p1/session.c
--- openssh-5.6p1/session.c.audit5 2010-06-26 02:00:15.000000000 +0200
+++ openssh-5.6p1/session.c 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/session.c 2011-02-02 08:23:05.000000000 +0100
@@ -1677,6 +1677,7 @@ do_child(Session *s, const char *command
/* remove hostkey from the child's memory */
@ -335,9 +333,9 @@ diff -up openssh-5.6p1/session.c.audit5 openssh-5.6p1/session.c
/* Force a password change */
if (s->authctxt->force_pwchange) {
diff -up openssh-5.6p1/sshd.c.audit5 openssh-5.6p1/sshd.c
--- openssh-5.6p1/sshd.c.audit5 2011-01-31 16:03:38.000000000 +0100
+++ openssh-5.6p1/sshd.c 2011-01-31 16:12:52.000000000 +0100
@@ -582,6 +582,7 @@ demote_sensitive_data(void)
--- openssh-5.6p1/sshd.c.audit5 2011-02-02 08:23:04.000000000 +0100
+++ openssh-5.6p1/sshd.c 2011-02-02 08:35:25.000000000 +0100
@@ -579,6 +579,7 @@ demote_sensitive_data(void)
}
/* Certs do not need demotion */
}
@ -345,25 +343,45 @@ diff -up openssh-5.6p1/sshd.c.audit5 openssh-5.6p1/sshd.c
/* We do not clear ssh1_host key and cookie. XXX - Okay Niels? */
}
@@ -692,6 +693,8 @@ privsep_postauth(Authctxt *authctxt)
@@ -663,6 +664,8 @@ privsep_preauth(Authctxt *authctxt)
return (0);
}
+extern Newkeys *current_keys[];
+
static void
privsep_postauth(Authctxt *authctxt)
{
@@ -688,6 +691,10 @@ privsep_postauth(Authctxt *authctxt)
verbose("User child is on pid %ld", (long)pmonitor->m_pid);
close(pmonitor->m_recvfd);
buffer_clear(&loginmsg);
+ newkeys_destroy(current_keys[MODE_OUT]);
+ newkeys_destroy(current_keys[MODE_IN]);
+ packet_destroy_all();
+ audit_destroy_sensitive_data();
+ audit_session_key_free_body(2);
monitor_child_postauth(pmonitor);
/* NEVERREACHED */
@@ -1977,6 +1980,8 @@ main(int ac, char **av)
@@ -709,6 +716,7 @@ privsep_postauth(Authctxt *authctxt)
skip:
/* It is safe now to apply the key state */
monitor_apply_keystate(pmonitor);
+//drop here ??
/*
* Tell the packet layer that authentication was successful, since
@@ -1970,6 +1978,9 @@ main(int ac, char **av)
*/
if (use_privsep) {
mm_send_keystate(pmonitor);
+//umac_clear
+ packet_destroy_all();
+ audit_session_key_free(2);
exit(0);
}
@@ -2018,8 +2023,10 @@ main(int ac, char **av)
@@ -2011,8 +2022,10 @@ main(int ac, char **av)
if (use_privsep) {
privsep_postauth(authctxt);
/* the monitor process [priv] will not return */
@ -375,7 +393,7 @@ diff -up openssh-5.6p1/sshd.c.audit5 openssh-5.6p1/sshd.c
}
packet_set_timeout(options.client_alive_interval,
@@ -2256,6 +2263,7 @@ do_ssh1_kex(void)
@@ -2249,6 +2262,7 @@ do_ssh1_kex(void)
}
/* Destroy the private and public keys. No longer. */
destroy_sensitive_data();

2
openssh-5.6p1-wIm.patch
View File

@ -68,7 +68,7 @@ diff -up openssh-5.6p1/whereIam.c.wIm openssh-5.6p1/whereIam.c
+
+void debug_wIm(const char *txt)
+{
+ debug("%s wIm = %d, euid=%d", txt, whereIam, geteuid());
+ debug("%s: %s wIm = %d, euid=%d", txt, __func__, whereIam, geteuid());
+}
+
+

4
openssh.spec
View File

@ -71,7 +71,7 @@
# Do not forget to bump pam_ssh_agent_auth release if you rewind the main package release to 1
%define openssh_ver 5.6p1
%define openssh_rel 26
%define openssh_rel 27
%define pam_ssh_agent_ver 0.9.2
%define pam_ssh_agent_rel 29
@ -603,7 +603,7 @@ fi
%endif
%changelog
* Mon Jan 31 2011 Jan F. Chadima <jchadima@redhat.com> - 5.6p1-26 + 0.9.2-29
* Tue Feb 1 2011 Jan F. Chadima <jchadima@redhat.com> - 5.6p1-27 + 0.9.2-29
- clean the data structures in the privileged process
* Tue Jan 25 2011 Jan F. Chadima <jchadima@redhat.com> - 5.6p1-25 + 0.9.2-29