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ZDI-12-058 : Apple Quicktime PNG Depth Decoding Remote Code Execution
Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-12-058

April  9, 2012

- -- CVE ID:
CVE-2011-3460

- -- CVSS:
7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P

- -- Affected Vendors:

Apple



- -- Affected Products:

Apple Quicktime



- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of AppleQuickTime Player. 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 occurs when the application allocates space for
decoding a video sample encoded with the .png format. When calculating
space for this surface, the application will explicitly trust the
bit-depth within the MediaVideo header. During the decoding process, the
application will write outside the surface's boundaries. This can be
leveraged to allow for one to earn code execution under the context 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/HT5130




- -- Disclosure Timeline:
2011-10-21 - Vulnerability reported to vendor

2012-04-09 - Coordinated public release of advisory



- -- Credit:
This vulnerability was discovered by:

* Luigi Auriemma



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