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Mozilla has pushed out a new version of Firefox that fixes a number of security bugs, including a high-profile bug involving launching Firefox from Internet Explorer.

Firefox version 2.0.0.5 also fixes a number of memory corruption and privilege escalation flaws, as explained in Mozilla's release notes here.

The release - available in Mac, Windows and Linux flavours - will be automatically pushed out to users within the next two days. Users still running running Firefox 1.5.0.x, which is no longer supported, are urged to upgrade to the Firefox 2 series.

In other security bug-related news, independent security researcher Michal Zalewski has unearthed a vulnerability in Internet Explorer, which might be exploited by a malicious website to spoof the address bar. The unpatched bug allows con-men to create more convincing phishing and revolves around flaws in the way IE7 implements the "document.open()" method of opening new browser windows.

An even more severe client-side risk comes from a pair of unpatched flaws in the Trillian multi-protocol IM client. Users are urged to disable the "aim://" URI handler in Trillian as a workaround, pending the delivery of security updates. ®

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