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.
http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00024.html
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
http://lists.opensuse.org/opensuse-updates/2014-09/msg00011.html
http://packetstormsecurity.com/files/128132/Mozilla-Firefox-Secret-Leak.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1045977
http://seclists.org/fulldisclosure/2014/Sep/18
http://secunia.com/advisories/60148
http://secunia.com/advisories/61114
https://security.gentoo.org/glsa/201504-01
http://www.mozilla.org/security/announce/2014/mfsa2014-69.html
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html