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authorLeo Famulari <leo@famulari.name>2016-04-15 13:56:34 -0400
committerLeo Famulari <leo@famulari.name>2016-04-17 13:48:31 -0400
commit67157996e23f1d6135659d91c1a15e3ac4afd4e0 (patch)
tree619513fe220b157bc4f874168835bd437df49b08 /gnu
parenta7d94b54c7c505f5cf9a2691f5340ae3d2acda9e (diff)
downloadguix-67157996e23f1d6135659d91c1a15e3ac4afd4e0.tar
guix-67157996e23f1d6135659d91c1a15e3ac4afd4e0.tar.gz
gnu: openssh: Fix CVE-2015-8325.
* gnu/packages/patches/openssh-CVE-2015-8325.patch: New file. * gnu-system.am (dist_patch_DATA): Add it. * gnu/packages/ssh.scm (openssh): Use it.
Diffstat (limited to 'gnu')
-rw-r--r--gnu/packages/patches/openssh-CVE-2015-8325.patch31
-rw-r--r--gnu/packages/ssh.scm3
2 files changed, 33 insertions, 1 deletions
diff --git a/gnu/packages/patches/openssh-CVE-2015-8325.patch b/gnu/packages/patches/openssh-CVE-2015-8325.patch
new file mode 100644
index 0000000000..8063e64ea7
--- /dev/null
+++ b/gnu/packages/patches/openssh-CVE-2015-8325.patch
@@ -0,0 +1,31 @@
+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
+
diff --git a/gnu/packages/ssh.scm b/gnu/packages/ssh.scm
index eaf57acb3d..b8f107b111 100644
--- a/gnu/packages/ssh.scm
+++ b/gnu/packages/ssh.scm
@@ -126,7 +126,8 @@ a server that supports the SSH-2 protocol.")
(string-append "http://ftp2.fr.openbsd.org/pub/OpenBSD/OpenSSH/portable/"
tail))))
(sha256 (base32
- "132lh9aanb0wkisji1d6cmsxi520m8nh7c7i9wi6m1s3l38q29x7"))))
+ "132lh9aanb0wkisji1d6cmsxi520m8nh7c7i9wi6m1s3l38q29x7"))
+ (patches (search-patches "openssh-CVE-2015-8325.patch"))))
(build-system gnu-build-system)
(inputs `(("groff" ,groff)
("openssl" ,openssl)