An attacker could commandeer a computer running the browser simply by crafting a Web page that contains some ToorCon hacker conference here. The flaw affects Firefox on Windows, Apple Computer's Mac OS X and Linux, they said., Mischa Spiegelmock and Andrew Wbeelsoi said in a presentation at the
"Internet Explorer, everybody knows, is not very secure. But Firefox is also fairly insecure," said Spiegelmock, who in everyday life works at blog company SixApart. He detailed the flaw, showing a slide that displayed key parts of the attack code needed to exploit it.
Snyder said she isn't happy with the disclosure and release of an apparent exploit during the presentation. "It looks like they had enough information in their slide for an attacker to reproduce it," she said. "I think it is unfortunate because it puts users at risk, but that seems to be their goal."
The hackers claim they know of about 30 unpatched Firefox flaws. They don't plan to disclose them, instead holding onto the bugs.
Jesse Ruderman, a Mozilla security staffer, attended the presentation and was called up on the stage with the two hackers. He attempted to persuade the presenters to responsibly disclose flaws via Mozilla's bug bounty program instead of using them for malicious purposes such as creating networks of hijacked PCs, called botnets.
"I do hope you guys change your minds and decide to report the holes to us and take away $500 per vulnerability instead of using them for botnets," Ruderman said.
The two hackers laughed off the comment. "It is a double-edged sword, but what we're doing is really for the greater good of the Internet. We're setting up communication networks for black hats," Wbeelsoi said.
Since the presentation,on the zero-day claims. In a note posted to the Mozilla Web site on Monday, he says that he was never able to exploit the supposed vulnerability to hijack computers.