Mozilla Firefox js_InitRandom function inadequate random number vulnerability and repair

Affected Versions:
Mozilla Firefox 4.0 Beta1
Mozilla Firefox 3.6.x
Mozilla Firefox 3.5.x vulnerability description:
CVE (CAN) ID: CVE-2010-3399, CVE-2010-3400

Firefox is a very popular open-source WEB browser.

In JavaScript Implementation of Firefox, The js_InitRandom function uses the pointer of the current time or environment as the seed of the random number generator. Attackers can easily guess the seed value through brute force guessing attacks, attackers can hijack sessions and perform other attacks. <* Reference
Johnathan Nightingale (johnath@johnath.com)

Https://bugzilla.mozilla.org/show_bug.cgi? Id = 475585
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Vendor patch:

Mozilla
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The vendor has released a patch to fix this security problem. Please download it from the vendor's homepage:

Https://bugzilla.mozilla.org/attachment.cgi? Id = 400900 & action = diff