TippingPoint Zero Day Initiative

Apple QuickTime RIFF fmt Chunk Parsing Remote Code Execution Vulnerability

ZDI-11-229: June 29th, 2011


CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11430. For further product information on the TippingPoint IPS:

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 how the application parses a specially formatted RIFF WAV file. When parsing a fmt chunk within the file, the application will use a 32-bit field to calculate the size of a buffer to allocate. Before the allocation, the application will add 0x14 bytes to the result. Due to restrictions imposed on the implementation of this component by the language and it's platform, an integer overflow can be made to occur. This can lead to code execution under the context of the application.

Vendor Response

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

Disclosure Timeline

    2011-04-11 - Vulnerability reported to vendor
    2011-06-29 - Coordinated public release of advisory


This vulnerability was discovered by:
    Luigi Auriemma