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

1) An error in the third-party Indeo5 codec for QuickTime in "ir50_32.qtx" can be exploited to access uninitialised memory via a specially crafted movie file.

2) A boundary error in QuickTimeInternetExtras.qtx when parsing files via the third-party Indeo3.2 codec for QuickTime can be exploited to cause a stack-based buffer overflow via a specially crafted movie file.

3) A boundary error in the parsing of panorama atoms in QTVR (QuickTime Virtual Reality) movie files can be exploited to cause a heap-based buffer overflow via a specially crafted QTVR file.

4) A boundary error in the parsing of panorama PDAT atoms in QTVR (QuickTime Virtual Reality) movie files can be exploited to cause a stack-based buffer overflow via a QTVR file containing specially crafted "maxTilt", "minFieldOfView", and "maxFieldOfView" elements.

5) An integer overflow in the parsing of PICT images can be exploited via a specially crafted PICT image.

6) An error in the CallComponentFunctionWithStorage() function when parsing STSZ atoms in movie files can be exploited to corrupt memory via a movie file containing a overly large entry in sample_size_table.

7) Multiple errors when parsing H.264 encoded movie files (e.g. an integer overflow when parsing AVC1 atoms and two errors when parsing MDAT atoms) can be exploited to corrupt memory via a specially crafted file.

8) An error in the parsing of PICT images can be exploited via a specially crafted PICT image file.

Successful exploitation of the vulnerabilities may allow execution of arbitrary code.

Solution
Update to version 7.5.5.
Further details available to Secunia VIM customers

Provided and/or discovered by
1) Paul Byrne, NGSSoftware.
2) Reported by an anonymous person via ZDI.
3) The vendor credits Roee Hay, IBM Rational Application Security Research Group.
4) Reported by an anonymous person via ZDI.
5) Reported by an anonymous person via iDefense VCP.
6) Reported by an anonymous person via ZDI.
7) Reported by an anonymous person and Subreption via ZDI.
8) The vendor credits David Wharton.

Changelog
Further details available to Secunia VIM customers

Original Advisory
Apple:
http://support.apple.com/kb/HT3027

ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-08-057/
http://www.zerodayinitiative.com/advisories/ZDI-08-058/
http://www.zerodayinitiative.com/advisories/ZDI-08-059/
http://www.zerodayinitiative.com/advisories/ZDI-08-060/
http://www.zerodayinitiative.com/advisories/ZDI-08-061/
http://www.zerodayinitiative.com/advisories/ZDI-08-062/

iDefense VCP:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=744

NGSSoftware:
http://www.ngssoftware.com/advisories/critical-vulnerability-in-apple-quicktimes-indeo-codec/

Deep Links
Links available to Secunia VIM customers