Secunia

pdp has discovered a vulnerability in Apple QuickTime, which can be exploited by malicious people to bypass certain security restrictions and to compromise a user's system.

The vulnerability is caused due to missing input validation when processing the "qtnext" attribute in an "embed" tag of a QuickTime Media Link file. This can be exploited e.g. by a malicious web site to open local content in the browser via the "qtnext" attribute of the "embed" tag in a Quicktime Media Link file opened by the QuickTime Plug-In.

NOTE: This can further be exploited to pass arbitrary parameters to the default browser when a specially crafted file is opened with QuickTime or the QuickTime Plug-In and allows e.g. execution of arbitrary code on a user's system when Firefox is set as the default browser. This is caused by Firefox inappropriately allowing execution of arbitrary script code in Chrome context via the "-chrome" parameter. Reportedly, this issue does not affect Mac OS X.

The vulnerability is confirmed in version 7.2 with Firefox 2.0.0.6. Other versions may also be affected.

Solution
Apply Security Update for QuickTime 7.2 for Windows.
Further details available in Customer Area

Provided and/or discovered by
pdp

Changelog
Further details available in Customer Area

Original Advisory
Apple:
http://docs.info.apple.com/article.html?artnum=306560

http://www.gnucitizen.org/blog/backdooring-mp3-files/
http://www.gnucitizen.org/blog/0day-quicktime-pwns-firefox

Other references
Further details available in Customer Area

Deep Links
Links available in Customer Area