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TITLE:
Avira AntiVir Zoo Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA25140

VERIFY ADVISORY:
http://secunia.com/advisories/25140/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Avira AntiVir Personal Edition Classic 7.x
http://secunia.com/product/14146/
Avira AntiVir Personal Edition Premium 7.x
http://secunia.com/product/14194/
Avira AntiVir Premium Security Suite 7.x
http://secunia.com/product/14193/
Avira AntiVir Server 6.x
http://secunia.com/product/14196/
Avira AntiVir UNIX MailGate 2.x
http://secunia.com/product/14197/
Avira AntiVir Workstation 7.x
http://secunia.com/product/14195/

DESCRIPTION:
Jean-Sebastien Guay-Leroux has reported a vulnerability in Avira
AntiVir, which can be exploited by malicious people to cause a DoS
(Denial of Service).

The vulnerability is caused due to an error in the handling of Zoo
archives. This can be exploited to cause an infinite loop resulting
in high CPU utilisation.

SOLUTION:
The vulnerability is reportedly fixed in avpack32.dll version 7.3.0.6
and in the "antivir" binary for Linux since March 22nd 2007.

PROVIDED AND/OR DISCOVERED BY:
Jean-Sebastien Guay-Leroux

ORIGINAL ADVISORY:
Jean-Sebastien Guay-Leroux:
http://www.guay-leroux.com/projects/zoo-infinite-advisory.txt

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