Date: Wed, 17 Nov 2010 14:44:17 -0600
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'Full Disclosure (full-disclosure@...ts.grok.org.uk)'"
	<full-disclosure@...ts.grok.org.uk>,
	"'Bugtraq (bugtraq@...urityfocus.com)'" <bugtraq@...urityfocus.com>
Subject: ZDI-10-249: Apple Quicktime Sorenson Video Codec
 Decoding Remote Code Execution Vulnerability

ZDI-10-249: Apple Quicktime Sorenson Video Codec Decoding Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-10-249

November 10, 2010

-- CVE ID:
CVE-2010-3793

-- CVSS:
10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

-- 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 9683.
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's 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 way QuickTime decompresses video
samples that are encoded with the Sorenson v3 Codec. Upon parsing
malformed video sample data, the application will calculate an index for
decompression and use that to seek into a buffer used for writing. Due
to lack of bounds checking on the index, a pointer can be made to point
outside of the target array. Upon writing of the data a memory
corruption will occur. Successful exploitation can lead to code
execution under the context of the application.

-- Vendor Response:
Apple states:
Fixed in
Mac OS X 10.6.5: http://support.apple.com/kb/HT4435

-- Disclosure Timeline:
2010-03-22 - Vulnerability reported to vendor
2010-11-10 - Coordinated public release of advisory

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

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