Quicktime exploit danger for Firefox users

According to an advisory from the US-CERT, the vulnerability stems from a weakness in the way QuickTime handles a type of media-streaming communications called the “real time streaming protocol” (RTSP). Attackers could exploit the flaw merely by convincing users to click on a poisoned link, open a malicious e-mail attachment, or visit a specially crafted Web page. US-CERT says the vulnerability is present in QuickTime versions 4.0 through 7.3 (the latest version) on both Windows and Mac systems.

Interestingly, researchers at Symantec say they tested the publicly available exploit code for this flaw and found that it failed to work properly against Internet Explorer 6/7 as well as Safari 3 Beta; in those tests, the exploit simply crashes QuickTime. But Symantec said the exploit worked perfectly against Firefox if users have chosen QuickTime as the default player for multimedia formats. (link)

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