Technical Description

Two vulnerabilities have been identified in Sophos Anti-Virus products, which could be exploited by remote attackers or malware to cause a denial of service.

The first issue is caused by an error when processing malformed UPX files, which could be exploited by attackers to crash an affected application via a specially crafted file, creating a denial of service condition.

The second vulnerability is caused by an error when handling malformed BZIP archives, which could be exploited by attackers to cause a vulnerable gateway or endpoint to use up all of the available space on the disc volume used for Engine temporary files.

Affected Products

Sophos Anti-Virus engine versions prior to 2.48.0

Solution

Upgrade to virus engine version 2.48.0 :
http://www.sophos.com/support/updates/

References

http://www.vupen.com/english/advisories/2007/2972
http://www.sophos.com/support/knowledgebase/article/28407.html

Credits

Vulnerabilities reported by Sergio shadown Alvarez (n.runs).

ChangeLog

2007-08-27 : Initial release

Vulnerability Management

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