[OE-core] [PATCH 1/2] openssh: fix for CVE-2014-2532
Chen Qi
Qi.Chen at windriver.com
Tue May 13 07:46:26 UTC 2014
sshd in OpenSSH before 6.6 does not properly support wildcards on
AcceptEnv lines in sshd_config, which allows remote attackers to
bypass intended environment restrictions by using a substring located
before a wildcard character.
Signed-off-by: Chen Qi <Qi.Chen at windriver.com>
---
.../openssh/openssh/openssh-CVE-2014-2532.patch | 22 ++++++++++++++++++++
meta/recipes-connectivity/openssh/openssh_6.5p1.bb | 3 ++-
2 files changed, 24 insertions(+), 1 deletion(-)
create mode 100644 meta/recipes-connectivity/openssh/openssh/openssh-CVE-2014-2532.patch
diff --git a/meta/recipes-connectivity/openssh/openssh/openssh-CVE-2014-2532.patch b/meta/recipes-connectivity/openssh/openssh/openssh-CVE-2014-2532.patch
new file mode 100644
index 0000000..3deaf3f
--- /dev/null
+++ b/meta/recipes-connectivity/openssh/openssh/openssh-CVE-2014-2532.patch
@@ -0,0 +1,22 @@
+Upstream-Status: Backport
+
+Fix for CVE-2014-2532
+
+Backported from openssh-6.6p1.tar.gz
+
+Signed-off-by: Chen Qi <Qi.Chen at windriver.com>
+---
+--- a/session.c
++++ b/session.c
+@@ -955,6 +955,11 @@
+ u_int envsize;
+ u_int i, namelen;
+
++ if (strchr(name, '=') != NULL) {
++ error("Invalid environment variable \"%.100s\"", name);
++ return;
++ }
++
+ /*
+ * If we're passed an uninitialized list, allocate a single null
+ * entry before continuing.
diff --git a/meta/recipes-connectivity/openssh/openssh_6.5p1.bb b/meta/recipes-connectivity/openssh/openssh_6.5p1.bb
index b93b9ae..230f38a 100644
--- a/meta/recipes-connectivity/openssh/openssh_6.5p1.bb
+++ b/meta/recipes-connectivity/openssh/openssh_6.5p1.bb
@@ -29,7 +29,8 @@ SRC_URI = "ftp://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-${PV}.tar.
file://sshdgenkeys.service \
file://volatiles.99_sshd \
file://add-test-support-for-busybox.patch \
- file://run-ptest"
+ file://run-ptest \
+ file://openssh-CVE-2014-2532.patch"
PAM_SRC_URI = "file://sshd"
--
1.7.9.5
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