Stopgap Fix for Critical Firefox 3.5 Security Hole
Instructions showing hackers how to exploit an unpatched, critical security hole in Mozilla's new Firefox 3.5 Web browser have been posted online. So, until Mozilla can ship an update to quash this bug, Security Fix is posting instructions to help readers protect themselves from this vulnerability.
The security hole has to do with a flaw in the way Firefox 3.5 handles Javascript, a powerful programming language heavily used on popular Web sites. Specifically, the vulnerability was introduced with the addition of the Tracemonkey, a new feature in 3.5 that is designed to dramatically speed up the rendering of Javascript.
Vulnerability watcher Secunia rates this flaw "highly critical," noting that it is the type of flaw that criminals could use to remotely install rogue software, merely by convincing users to visit a hacked or booby-trapped Web site.