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Insecure Library Loading
Highly critical

Amavis file Integer Underflow and Denial of Service

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Release Date:  2007-06-06    Views:  7,466

Secunia Advisory SA25578

Where:

From remote

Impact:

DoS, System access

Solution Status:

Partial Fix

CVE Reference(s):

Description


A vulnerability and a security issue have been reported in Amavis, which can be exploited by malicious people to cause a DoS (Denial of Service) or potentially to compromise a vulnerable system.

1) An integer underflow error in the "file" utility can be exploited to cause a heap-based buffer overflow.

For more information:
SA24548

2) The problem is caused due to certain regular expressions in "file", which can consume all available CPU resources when identifying a specially crafted file.

For more information:
SA24918


Solution:
The vendor recommends updating to file version 4.21 or later and editing the "magic" file (see vendor advisory for details).

Provided and/or discovered by:
Reported by the vendor.

Original Advisory:
http://www.amavis.org/security/asa-2007-3.txt

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Amavis file Integer Underflow and Denial of Service

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