TippingPoint Zero Day Initiative

Apple QuickTime H264 Picture Width Parsing Remote Code Execution Vulnerability

ZDI-12-079: June 6th, 2012


CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

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 within the QuicktimeH264 modules in the QuickTime player that handles H264 encoded movies. When the value for 'pic_width_in_mbs_minus_1' and 'pic_height_in_map_units_minus_1' in the AVCC header data differs from the actual picture width and height a heap buffer overflow occurs. This can result in remote code execution under the context of the current process.

Vendor Response

Apple has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2011-11-29 - Vulnerability reported to vendor
    2012-06-06 - Coordinated public release of advisory


This vulnerability was discovered by:
    Luigi Auriemma