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TITLE:
avast! Zoo Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA25137

VERIFY ADVISORY:
http://secunia.com/advisories/25137/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
avast! Home/Professional 4.x
http://secunia.com/product/5162/

DESCRIPTION:
Jean-Sebastien Guay-Leroux has reported a vulnerability in avast!,
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.

The vulnerability is reported in avast! Home Edition and avast!
Professional Edition.

SOLUTION:
Update to version 4.7.981 or later.

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

ORIGINAL ADVISORY:
avast!:
http://www.avast.com/eng/avast-4-home_pro-revision-history.html

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

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