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. Per: http://lists.apple.com/archives/security-announce/2010//Mar/msg00002.html