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Credit:
The original article can be found at: http://www.zerodayinitiative.com/advisories/ZDI-11-254/
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Vulnerable Systems:
* 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 way Quicktime handles the 'trun' atom. Quicktime uses user supplied data in the 'sampleCount' field to calculate a buffer size. An integer wrap can occur that results in the allocation of a memory buffer that is smaller than intended. When Quicktime writes to this buffer it causes a memory corruption that can lead to remote code execution under the context of the current user.
Patch Availability:
Apple has issued an update to correct this vulnerability. More details can be found at:
http://support.apple.com/kb/HT4826
CVE Information:
CVE-2011-0256
Disclosure Timeline:
2011-06-03 - Vulnerability reported to vendor
2011-08-16 - Coordinated public release of advisory
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