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Mozilla fixes critical Firefox flaws

by Phil Muncaster

17 Dec 2009

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Mozilla has updated its flagship Firefox web browser to patch three critical vulnerabilities.

Firefox 3.5.6 and 3.0.16 suffered from crashes due to memory corruption, according to the Mozilla security advisory.

"Mozilla developers and community members identified and fixed several stability bugs in the browser engine used in Firefox and other Mozilla-based products," the advisory noted.

"Some of these crashes showed evidence of memory corruption under certain circumstances and we presume that with enough effort at least some of these could be exploited to run arbitrary code."

There are a total of 62 fixes for bugs in the new version of Firefox.

"We strongly recommend that all Firefox users upgrade to this latest release," noted a posting on the Mozilla Developer Center blog.

"If you already have Firefox 3.5 or Firefox 3, you will receive an automated update notification within 24 to 48 hours. This update can also be applied manually by selecting 'Check for Updates...' from the Help menu."

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