Fix for CVE-2015-8325 (#1328013)

This commit is contained in:
Jakub Jelen 2016-04-18 12:39:11 +02:00
parent 58d2868dfe
commit cf4e3a1844
2 changed files with 35 additions and 0 deletions

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@ -0,0 +1,32 @@
From 85bdcd7c92fe7ff133bbc4e10a65c91810f88755 Mon Sep 17 00:00:00 2001
From: Damien Miller <djm@mindrot.org>
Date: Wed, 13 Apr 2016 10:39:57 +1000
Subject: ignore PAM environment vars when UseLogin=yes
If PAM is configured to read user-specified environment variables
and UseLogin=yes in sshd_config, then a hostile local user may
attack /bin/login via LD_PRELOAD or similar environment variables
set via PAM.
CVE-2015-8325, found by Shayan Sadigh, via Colin Watson
---
session.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/session.c b/session.c
index 4859245..4653b09 100644
--- a/session.c
+++ b/session.c
@@ -1322,7 +1322,7 @@ do_setup_env(Session *s, const char *shell)
* Pull in any environment variables that may have
* been set by PAM.
*/
- if (options.use_pam) {
+ if (options.use_pam && !options.use_login) {
char **p;
p = fetch_pam_child_environment();
--
cgit v0.11.2

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@ -228,6 +228,8 @@ Patch933: openssh-7.0p1-show-more-fingerprints.patch
# Preserve IUTF8 tty mode flag over ssh connections (#1270248)
# https://bugzilla.mindrot.org/show_bug.cgi?id=2477
Patch936: openssh-7.1p1-iutf8.patch
# CVE-2015-8325: ignore PAM environment vars when UseLogin=yes
Patch937: openssh-7.2p2-CVE-2015-8325.patch
License: BSD
@ -462,6 +464,7 @@ popd
%patch932 -p1 -b .gsskexalg
%patch933 -p1 -b .fingerprint
%patch936 -p1 -b .iutf8
%patch937 -p1 -b .pam_uselogin_cve
%patch200 -p1 -b .audit
%patch201 -p1 -b .audit-race