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Amavis Zoo Denial of Service Vulnerability
Secunia Advisory: SA25315
Release Date: 2007-05-18
Popularity: 4,002 views

Critical:
Less critical
Impact: DoS
Where: From remote
Solution Status: Vendor Workaround

Software:AMaViS (A Mail Virus Scanner) 0.x
amavisd-new 2.x

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CVE reference:CVE-2007-1669


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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