A 7-year-old flaw that could let an attacker place malicious content on trusted Web sites has resurfaced in the most recent Firefox browser, Secunia has warned.
The flaw, which also affects some other Mozilla Foundation programs, lies in the way the software handles frames, which are a way of showing Web content in separate parts of the browser window. The applications don't check whether the frames displayed in a single window all originate from the same Web site, Secunia said in an advisory on Monday. Firefox 1.x, Mozilla 1.7.x and Camino 0.x versions are vulnerable to the flaw, the security monitoring company said.