The IPersistPropertyBag2::Read function in QTPlugin.ocx in Apple QuickTime 6.x, 7.x before 7.6.8, and other versions allows remote attackers to execute arbitrary code via the _Marshaled_pUnk attribute, which triggers unmarshalling of an untrusted pointer.
lists.apple.com/archives/security-announce/2010/Sep/msg00003.html
reversemode.com/index.php?option=com_content&task=view&id=69&Itemid=1
support.apple.com/kb/ht4339
threatpost.com/en_us/blogs/new-remote-flaw-apple-quicktime-bypasses-aslr-and-dep-083010
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7523
www.metasploit.com/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/apple_quicktime_marshaled_punk.rb