John Heasman of NGSSoftware has discovered a high risk vulnerability in 
Quicktime for Windows.
Versions affected include:

Quicktime 6.5.2 and earlier

The flaw permits execution of arbitrary code from an HTML environment. The 
patch can be downloaded from

http://www.apple.com/support/security/security_updates.html 

NGSSoftware are going to withhold details of this flaw for three
months. Full details will be published on the 28th of January 2005. This
three month window will allow users of Quicktime the time needed to apply
the patch before the details are released to the general public. This
reflects NGSSoftware's new approach to responsible disclosure.


NGSSoftware Insight Security Research
http://www.databasesecurity.com/ 
http://www.nextgenss.com/ 
+44(0)208 401 0070