Some vulnerabilities have been reported in Apple QuickTime, which can be exploited by malicious people to compromise a user's system

1) An integer underflow error exists in the processing of "0x77" tags within PICT images, which can be exploited to cause a heap-based buffer overflow when the user opens a specially crafted PICT image or visits a malicious web site.

This is related to vulnerability #30 in:
SA35074

2) A vulnerability is caused due to an error in the parsing of Sorenson Video 3 content. This can be exploited to corrupt memory by tricking a user into viewing a specially crafted movie file.

Successful exploitation may allow execution of arbitrary code.

3) A vulnerability is caused due to a boundary error in the processing of MS ADPCM encoded audio data. This can be exploited to cause a heap-based buffer overflow via e.g. a specially crafted AVI file.

Successful exploitation may allow execution of arbitrary code.

Vulnerabilities #2 and #3 are confirmed in version 7.60.92.0. Other versions may also be affected.

4) A boundary error exists when processing line specifiers in FLC delta encoded frames. This can be exploited to cause a heap-based buffer overflow when a specially crafted FLC compression file is opened.

5) A boundary error in the processing of compressed PSD images can be exploited to cause a heap-based buffer overflow when a specially crafted compressed PSD file is opened.

6) A boundary error error exists in the processing of PICT images, which can be exploited to cause a heap-based buffer overflow when a PICT image having a specially crafted 0x8201 opcode is opened.

7) A boundary error exists in the handling of Clipping Region (CRGN) atom types in a movie file. This can be exploited to cause a heap-based buffer overflow when a specially crafted movie file is opened.

8) A sign extension error exists in the handling of image description atoms, which can be exploited to corrupt memory and potentially execute arbitrary code when a specially crafted video file is opened.

9) An error due to the usage of uninitialised memory can potentially be exploited to execute arbitrary code when a movie with a user data atom size of zero is viewed.

10) A boundary error in the processing of JP2 images can be exploited to cause a heap-based buffer overflow when a specially crafted JP2 image is viewed.

Solution
Update to version 7.6.2.
Further details available to Secunia VIM customers

Provided and/or discovered by
1, 6) Sebastian Apelt, reported via ZDI.
2) Carsten Eiram, Secunia Research
3) Alin Rad Pop, Secunia Research
4) An anonymous researcher, reported via ZDI.
5, 10) Damian Put, reported via ZDI.
7) An anonymous researcher and Damian Put, reported via ZDI.
8) Roee Hay, IBM Rational Application Security Research Group

The vendor credits:
1) Chris Ries of Carnegie Mellon University Computing Services.
9) Lurene Grenier of Sourcefire, Inc. (VRT)
10) Charlie Miller of Independent Security Evaluators

Changelog
Further details available to Secunia VIM customers

Original Advisory
Apple:
http://support.apple.com/kb/HT3591

Secunia Research:
http://secunia.com/secunia_research/2009-6/
http://secunia.com/secunia_research/2009-10/

ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-09-025/
http://www.zerodayinitiative.com/advisories/ZDI-09-026/
http://www.zerodayinitiative.com/advisories/ZDI-09-027/
http://www.zerodayinitiative.com/advisories/ZDI-09-028/
http://www.zerodayinitiative.com/advisories/ZDI-09-029/
http://www.zerodayinitiative.com/advisories/ZDI-09-030/

Roee Hay:
http://roeehay.blogspot.com/2009/06/apple-quicktime-image-description-atom.html

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers