ZDI-09-006: Apple QuickTime AVI Header nBlockAlign Heap Corruption Vulnerability

[zdi-disclosures@xxxxxxxx]

ZDI-09-006: Apple QuickTime AVI Header nBlockAlign Heap Corruption 
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-09-006
January 21, 2009

-- CVE ID:
CVE-2009-0003

-- Affected Vendors:
Apple

-- Affected Products:
Apple Quicktime

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 6642. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- 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.

-- Vendor Response:
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:
This vulnerability was discovered by:
    * Anonymous

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