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Credit:
The information has been provided by Matt "j00ru".
The original article can be found at: http://www.zerodayinitiative.com/advisories/ZDI-11-252/
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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 PnSize PICT opcode. It converts an unsigned 16 bit value into a signed 32 bit value. This value is later used as the size parameter for a memory copy function that copies from the file onto the stack. The results in a stack based buffer overflow that allows for 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-2011-0257
Disclosure Timeline:
2011-04-11 - Vulnerability reported to vendor
2011-08-08 - Coordinated public release of advisory
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