Firefox, Thunderbird released

Mozilla has released updates for its Firefox web browser and Thunderbird mail client, bringing both up to version The Firefox update includes stability improvements, Mozilla says, as well as a number of security fixes. Those tune-ups cover five "critical" flaws dealing with JavaScript, some of which could allow attackers to take advantage of memory corruption, privilege escalation, and arbitrary code execution holes. Four of these flaws were also present in Thunderbird, which shares a portion of its code base with Firefox, and have been fixed in the update. The new Thunderbird release also patches a fifth "critical" hole that "could be exploited to run code of the attacker's choosing." Both Firefox and Thunderbird are available to download from Mozilla's website; users of previous versions can also upgrade by going into the Help menu of either application and selecting "check for updates."
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