Mozilla Firefox before 32.0, Firefox ESR 31.x before 31.1, and Thunderbird 31.x before 31.1 do not properly initialize memory for GIF rendering, which allows remote attackers to obtain sensitive information from process memory via crafted web script that interacts with a CANVAS element associated with a malformed GIF image.
https://security.gentoo.org/glsa/201504-01
https://bugzilla.mozilla.org/show_bug.cgi?id=1045977
http://www.securitytracker.com/id/1030794
http://www.securitytracker.com/id/1030793
http://www.securityfocus.com/bid/69525
http://www.securityfocus.com/archive/1/533357/100/0/threaded
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
http://www.mozilla.org/security/announce/2014/mfsa2014-69.html
http://secunia.com/advisories/61114
http://secunia.com/advisories/60148
http://seclists.org/fulldisclosure/2014/Sep/18
http://packetstormsecurity.com/files/128132/Mozilla-Firefox-Secret-Leak.html
http://lists.opensuse.org/opensuse-updates/2014-09/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00024.html
http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00003.html