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McAfee VirusScan ZIP Decompression Vulnerability
Secunia Advisory: SA26137
Release Date: 2007-07-25
Last Update: 2007-07-26
Popularity: 17,872 views

Critical:
Moderately critical
Impact: DoS
System access
Where: From remote
Solution Status: Unpatched

Software:McAfee VirusScan Command Line
McAfee VirusScan Enterprise 8.x

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Description:
Tavis Ormandy has discovered a vulnerability in McAfee VirusScan, which potentially can be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to the improper handling of dynamic Huffman coding within the ZIP decompression mechanism. This can potentially be exploited to execute arbitrary code with the permissions of a user scanning a specially crafted ZIP file.

The vulnerability is confirmed in McAfee VirusScan Command Line Scanner for Linux evaluation version 5.10 and is also reported in McAfee VirusScan for Windows. Other versions may also be affected.

Solution:
Do not scan ZIP compressed files.

Provided and/or discovered by:
Tavis Ormandy

Changelog:
2007-07-26: Added additional reportedly affected products. Minor changes to "Title" and "Solution" section.


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