12/20/2005

Highly Critical Vulnerability In Symantec AntiVirus

Filed under: — By Aviran Mordo @ 10:20 am

A highly critical vulnerability (pdf) discovered in Symantec AntiVirus, which potentially can be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to a boundary error in Dec2Rar.dll when copying data based on the length field in the sub-block headers of a RAR archive. This can be exploited to cause a heap-based buffer overflow and may allow arbitrary code execution when a malicious RAR archive is scanned.

The vulnerability has been reported in Dec2Rar.dll version 3.2.14.3 and potentially affects all Symantec products that use the DLL.

Security company Secunia rates this vulnerability as highly critical (4/5) and recommends to filter RAR archives at email or proxy gateways.



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