ZDI-09-063: Apple QuickTime H.264 Nal Unit Length Heap Overflow Vulnerability

[ZDI Disclosures <zdi-disclosures@xxxxxxxxxxxxxxxx>]

ZDI-09-063: Apple QuickTime H.264 Nal Unit Length Heap Overflow
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-09-063
September 10, 2009

-- CVE ID:
CVE-2009-2799

-- 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 8435.
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- 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 during the parsing of samples from a malformed
MOV file utilizing the H.264 codec. While parsing data to render the
stream, the application will mistrust a length that is used to
initialize a heap chunk that was allocated in a header. If the length is
larger than the size of the chunk allocated, then a memory corruption
will occur leading to code execution under the context of the currently
logged in user.

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

http://support.apple.com/kb/HT3859

-- Disclosure Timeline:
2009-07-28 - Vulnerability reported to vendor
2009-09-10 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Anonymous
    * Damian Put

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