Apple Quicktime PICT Opcode 0x71 Heap Overflow Vulnerability

ID ZDI-09-030
Type zdi
Reporter Sebastian Apelt (
Modified 2009-11-09T00:00:00


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple QuickTime. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists in the parsing of PICT files in QuickTime.qts. While processing data for opcode 0x71 QuickTime trusts a value contained in the file and makes an allocation accordingly. By providing a malicious value this buffer can be undersized and subsequently can be overflowed leading to arbitrary code execution under the context of the user running QuickTime.