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Mozilla Fesses Up to a Critical Vulnerability in Firefox 3.5

Posted 07/15/09 at 07:21:58 PM  by Pulkit Chandna

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Mozilla has confirmed the presence of a critical vulnerability in Firefox 3.5. The vulnerability is nestled in the browser’s Just-in-time (JIT) JavaScript compiler – part of the new TraceMonkey engine – and can be used to execute malicious code. Hackers may lure gullible Firefox 3.5 users to websites containing code meant to exploit the flaw. While Mozilla burns the midnight lamp in finding a solution, you can simply disable the JIT. However, it must be noted that disabling the JIT will have an adverse effect on JavaScript performance.

Image Credit: FavBrowser

COMMENTS:5
TAGS: Software, hackers, browser, Mozilla, JavaScript, flaw, fix, firefox 3.5, tracemonkey engine, malicious code, jit
COMMENTS
avatarwhy is the president of

Submitted by jvc08 on Sun, 07/19/2009 - 3:16pm

why is the president of brazil on that picture???

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avatarNotice the lack of mocking

Submitted by rseding91 on Thu, 07/16/2009 - 1:27pm

Notice the lack of mocking FF.

If this was a IE bug but there would be loads of IE haters here to mock and flame it.

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avatarDoes the NoScript add-on

Submitted by Jox on Wed, 07/15/2009 - 5:03pm

Does the NoScript add-on offer any protection against this exploit?

-Jox

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avatarNoscript is a Yes

Submitted by opulent_rigs on Thu, 07/16/2009 - 11:53am

Yeah, you can use it to only allow credible sites too use Java. it will help

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avatarAnd all will be well in the

Submitted by I Jedi on Wed, 07/15/2009 - 4:51pm

And all will be well in the world of Firefox, the great geeks of the land said. So fear not, for we have nothing to fear but fear itself. Do as the article advice, people, and you'll be covered 110% of the way until a release update is made.

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