ZDI-08-044: Mozilla Firefox CSSValue Array Memory Corruption Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-08-044 July 17, 2008
-- CVE ID: CVE-2008-2785
-- Affected Vendors: Mozilla Firefox
-- Affected Products: Mozilla Firefox 2.0.x Mozilla Firefox 3.0.x
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-- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mozilla Firefox. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.
The specific flaw exists in the browser's handling reference counters to the nsCSSValue:Array class. Creating more then 65,535 references will overflow a 16-bit reference counter and therefore result in an erroneous free() while the object still exists. Properly manipulated this can result in arbitrary code execution under the context of the current user.
-- Vendor Response: Mozilla Firefox has issued an update to correct this vulnerability. More details can be found at:
-- Disclosure Timeline: 2008-06-17 - Vulnerability reported to vendor 2008-07-17 - Coordinated public release of advisory
-- Credit: This vulnerability was discovered by: * Anonymous
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