From: Secunia Security Advisories (sec-advsecunia.com)
Date: Fri May 18 2007 - 06:02:05 CDT

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TITLE:
Amavis Zoo Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA25315

VERIFY ADVISORY:
http://secunia.com/advisories/25315/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
From remote

SOFTWARE:
AMaViS (A Mail Virus Scanner) 0.x
http://secunia.com/product/2468/
amavisd-new 2.x
http://secunia.com/product/4492/

DESCRIPTION:
A vulnerability has been reported in Amavis, which can potentially be
exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to Amavis potentially invoking an
insecure version of zoo or unzoo. This can be exploited to cause an
infinite loop resulting in high CPU utilisation.

SOLUTION:
The vendor recommends disabling the use of zoo or unzoo, or using a
patched version of zoo.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Jean-Sebastien Guay-Leroux.

ORIGINAL ADVISORY:
http://www.amavis.org/security/asa-2007-2.txt

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