Heap-based buffer overflow in QuickTime.qts in Apple QuickTime before 7.6.6 on Windows allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a PICT image with a BkPixPat opcode (0x12) containing crafted values that are used in a calculation for memory allocation.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6780
http://www.zerodayinitiative.com/advisories/ZDI-10-067
http://www.securityfocus.com/archive/1/510569/100/0/threaded
http://lists.apple.com/archives/security-announce/2010//Mar/msg00002.html