ZDI-12-135 : Apple QuickTime JPEG2k Sample Size Atom Remote Code Execution Vulnerability

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ZDI-12-135 : Apple QuickTime JPEG2k Sample Size Atom Remote Code Execution
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-135
August 3, 2012

• – CVE ID:
  CVE-2012-0661

• – 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 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 Apple QuickTime handles movies with
the jpeg2k codec. When the size for a sample defined in the stsz atom is
too big the QuickTime player fails to allocate the required memory for that
sample. A pointer to the previous sample data still exists after the
previous sample got freed. This pointer normally gets updated to point to
the current sample data, but this does not happen when the allocation
fails. The QuickTime player then re-uses the stale pointer and a
use-after-free situation occurs. This can lead to remote code execution
under that context of the current process.

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

http://support.apple.com/kb/HT1222

• – Disclosure Timeline:
  2011-11-29 - Vulnerability reported to vendor
  2012-08-03 - Coordinated public release of advisory

• – Credit:
  This vulnerability was discovered by:

• Damian Put

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