Stack-based buffer overflow in the Canvas implementation in Mozilla Firefox before 18.0, Firefox ESR 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderbird ESR 17.x before 17.0.2, and SeaMonkey before 2.15 allows remote attackers to execute arbitrary code via an HTML document that specifies invalid width and height values.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16990
http://www.ubuntu.com/usn/USN-1681-4
http://www.ubuntu.com/usn/USN-1681-2
http://www.ubuntu.com/usn/USN-1681-1
http://www.mozilla.org/security/announce/2013/mfsa2013-03.html
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00006.html