openssl: fix CVE-2014-0198

A null pointer dereference bug was discovered in do_ssl3_write().
An attacker could possibly use this to cause OpenSSL to crash, resulting
in a denial of service.

https://access.redhat.com/security/cve/CVE-2014-0198

(From OE-Core rev: 580033721abbbb4302bc803ebc70c90e331e4587)

Signed-off-by: Maxin B. John <maxin.john@enea.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/meta/recipes-connectivity/openssl/openssl/openssl-CVE-2014-0198-fix.patch b/meta/recipes-connectivity/openssl/openssl/openssl-CVE-2014-0198-fix.patch
new file mode 100644
index 0000000000..4c51d746ff
--- /dev/null
+++ b/meta/recipes-connectivity/openssl/openssl/openssl-CVE-2014-0198-fix.patch
@@ -0,0 +1,23 @@
+Upstream-Status: Backport
+
+Reference: https://bugzilla.redhat.com/show_bug.cgi?id=1093837
+
+CVE-2014-0198: An attacker can trigger generation of an SSL
+alert which could cause a null pointer dereference.
+
+Signed-off-by: Maxin B. John <maxin.john@enea.com>
+---
+diff -Naur openssl-1.0.1g-orig/ssl/s3_pkt.c openssl-1.0.1g/ssl/s3_pkt.c
+--- openssl-1.0.1g-orig/ssl/s3_pkt.c    2014-03-17 17:14:20.000000000 +0100
++++ openssl-1.0.1g/ssl/s3_pkt.c 2014-05-06 02:32:43.862587660 +0200
+@@ -657,6 +657,10 @@
+                if (i <= 0)
+                        return(i);
+                /* if it went, fall through and send more stuff */
++               /* we may have released our buffer, so get it again */
++               if (wb->buf == NULL)
++                       if (!ssl3_setup_write_buffer(s))
++                               return -1;
+                }
+ 
+        if (len == 0 && !create_empty_fragment)