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From 7f3fb4e5fdddc6600e70ae663c21511fbcf2c64c 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
Origin: upstream, https://anongit.mindrot.org/openssh.git/commit/?id=85bdcd7c92fe7ff133bbc4e10a65c91810f88755
Last-Update: 2016-04-13
Patch-Name: CVE-2015-8325.patch
---
session.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/session.c b/session.c
index f246b8a..8ab9814 100644
--- a/session.c
+++ b/session.c
@@ -1317,7 +1317,7 @@ 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();
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