ZDI-10-261: Apple QuickTime PICT File PackBits Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-10-261

December 7, 2010

-- CVE ID:
CVE-2010-3800

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

-- Affected Vendors:
Apple

-- Affected Products:
Apple Quicktime

-- 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 the application's implementation of a
custom compression algorithm. The application will trust a field within
a DirectBitsRect structure which is used for an allocation, and later
attempt to decompress data into this buffer. Due to the value for the
allocation being different from the length of the data being
decompressed a buffer overflow will occur which can lead to code
execution with the privileges of the application.

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

http://support.apple.com/kb/HT4447

-- Disclosure Timeline:
2010-06-01 - Vulnerability reported to vendor
2010-12-07 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Damian Put
    * Procyun
    * Andrzej Dyjak

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