Quicktime bug dangerous for Firefox users

A researcher has demonstrated how a security bug in Apple’s QuickTime media player that was disclosed a year ago can cause Firefox to install backdoors and other malware on a fully patched computer. He said both Windows and Mac systems are vulnerable.

The researcher, Petko D. Petkov, on Wednesday posted proof-of-concept code that shows how the exploit can be used to run privileged code on an unwitting user’s machine.