Integer overflow in Apple QuickTime before 7.7.1 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted movie file with JPEG2000 encoding.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15825
http://support.apple.com/kb/HT5130
http://support.apple.com/kb/HT5016
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html