Nothing to worry about, but Firefox may crash if you surf upon the exploit. The temporary work-around is to just clear history information when closing the browser . . . which is an easy three click operation in FF 1.5 Tools > Clear Private Data > Clear Private Data Now (confirm which boxes you want selected prior to final click) . http://secunia.com/advisories/17934/
Firefox will not crash on startup, and as confirmed by the Mozilla Org which has been unable to confirm any crashes. This is more like a one-time mini-DoS. Mozilla Foundation, which released Firefox, said it was not able to confirm the browser would crash or be at risk of a DOS attack, after visiting certain Web sites. And Mozilla has not received any reports from users of such a problem, said Mike Schroepfer, vice president of engineering for Mozilla Corp. He added that Firefox 1.5 can be slugglish on its next start-up, due to a bug in the history.dat, but it is not a security problem. "We have gotten no independent verification that it crashes (Firefox), but there have been a lot of attempts to try," Schroepfer said. If the history.dat was filled, you just have to wait a minute or so, and Firefox will come up and act as normal for that session, and the next session.
