Heap-based buffer overflow in the ClearKey Content Decryption Module (CDM) in the Encrypted Media Extensions (EME) API in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 might allow remote attackers to execute arbitrary code by providing a malformed video and leveraging a Gecko Media Plugin (GMP) sandbox bypass.
https://security.gentoo.org/glsa/201701-15
https://bugzilla.mozilla.org/show_bug.cgi?id=1274637
http://www.zerodayinitiative.com/advisories/ZDI-16-673
http://www.ubuntu.com/usn/USN-3044-1
http://www.securitytracker.com/id/1036508
http://www.securityfocus.com/bid/92258
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://www.mozilla.org/security/announce/2016/mfsa2016-77.html
http://www.debian.org/security/2016/dsa-3640
http://rhn.redhat.com/errata/RHSA-2016-1551.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html