The copyTexImage2D implementation in the WebGL subsystem in Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via large image dimensions.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16896
http://www.ubuntu.com/usn/USN-1638-3
http://www.ubuntu.com/usn/USN-1638-2
http://www.ubuntu.com/usn/USN-1638-1
http://www.ubuntu.com/usn/USN-1636-1
http://www.securityfocus.com/bid/56644
http://www.mozilla.org/security/announce/2012/mfsa2012-106.html
http://secunia.com/advisories/51440
http://secunia.com/advisories/51439
http://secunia.com/advisories/51434
http://secunia.com/advisories/51381
http://secunia.com/advisories/51370
http://secunia.com/advisories/51369
http://lists.opensuse.org/opensuse-updates/2012-11/msg00093.html
http://lists.opensuse.org/opensuse-updates/2012-11/msg00092.html
http://lists.opensuse.org/opensuse-updates/2012-11/msg00090.html
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00022.html
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00021.html