From 85bdcd7c92fe7ff133bbc4e10a65c91810f88755 Mon Sep 17 00:00:00 2001 From: Damien Miller 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 https://anongit.mindrot.org/openssh.git/commit/session.c?id=85bdcd7c92fe7ff133bbc4e10a65c91810f88755 CVE: CVE-2015-8325 Upstream-Status: Backport Signed-off-by: Jussi Kukkonen --- 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