Firefox 3.0.9 targets 12 security vulnerabilities

From CNET News.com: Mozilla released an update to Firefox 3 on Tuesday that patches 12 security vulnerabilities, four of which it rated as critical.

Firefox 3.0.9, the Web browser's third update this year, fixes two critical vulnerabilities in the Firefox browser engine and two in its JavaScript engine, according to a security advisory posted Tuesday:

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

The release comes as Mozilla prepares to release the fourth beta of Firefox 3.5--the next version of the open-source browser. Mozilla had originally planned to release its new "Shiretoko" version of Firefox in early 2009. But after releasing Firefox 3.1 beta 3 last month, the organization behind the browser said a fourth beta is planned--and with the new version number 3.5.

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