SECUNIA ADVISORY ID: SA22635

VERIFY ADVISORY: http://secunia.com/advisories/22635/

CRITICAL: Moderately critical

IMPACT: DoS

WHERE: >From remote

SOFTWARE:
Sophos Anti-Virus for Windows 6.x - http://secunia.com/product/12449/
Sophos Anti-Virus 5.x - http://secunia.com/product/5390/
Sophos Anti-Virus 4.x - http://secunia.com/product/5391/
Sophos Anti-Virus Small Business Edition - http://secunia.com/product/9822/

DESCRIPTION: A vulnerability has been reported in Sophos Anti-Virus, which can be exploited by malicious people to cause a DoS (Denial of Service). An unspecified error in the Petite plugin when processing Petite archives containing a large number of large sectors can be exploited to DoS the virus engine. Please see the vendor's advisory for a list of affected versions.

SOLUTION: Updates are available for all products, but Sophos Anti-Virus for Macintosh (available in December 2006).

PROVIDED AND/OR DISCOVERED BY: The vendor credits iDefense.

ORIGINAL ADVISORY: Sophos: http://www.sophos.com/support/knowledgebase/article/7609.html