|TREND MICRO CUSTOMER PROTECTION||Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 4097. For further product information on the TippingPoint IPS: http://www.tippingpoint.com|
This vulnerability allows attackers to execute arbitrary code on vulnerable installations of the Mozilla/Firefox web browser and Thunderbird e-mail client. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious e-mail.
The specific flaw is due to incorrect handling of the CSS "letter-spacing" element. By specifying a large number, an attacker can overflow an integer used during memory allocation. The under-allocated buffer is later used to store user-supplied data leading to an exploitable heap overflow.
Mozilla Firefox has issued an update to correct this vulnerability. More details can be found at: