Apple QuickTime AVI Header nBlockAlign Heap Corruption Vulnerability

January 21st, 2009
ZDI-09-006 ZDI-CAN-393

CVE ID

CVE-2009-0003

CVSS Score

None None

Affected Vendors

Apple

Affected Products

Quicktime

Vulnerability Details

This vulnerability allows 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 parsing of AVI files. When the AVI header contains a malformed nBlockAlign value in the _WAVEFORMATEX structure, a heap overflow may occur which can be leveraged to execute arbitrary code under the context of the current user.

Additional Details

Apple has issued an update to correct this vulnerability. More details can be found at:
http://support.apple.com/kb/HT3403

Disclosure Timeline

  • 2008-10-15 - Vulnerability reported to vendor
  • 2009-01-21 - Coordinated public release of advisory

Credit

Anonymous

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