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McAfee VirusScan DUNZIP32.dll Buffer Overflow Vulnerability
Secunia Advisory: SA19451
Release Date: 2006-03-30
Popularity: 11,973 views

Critical:
Less critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

Software:McAfee SecurityCenter 6.x
McAfee VirusScan 10.x/2006

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CVE reference:CVE-2004-1094


Description:
A vulnerability has been discovered in McAfee VirusScan, which potentially can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error in a 3rd-party compression library (DUNZIP32.dll) when processing virus definition files. This can be exploited to cause a buffer overflow via a specially crafted definition file.

The vulnerability is related to:
SA12869

Successful exploitation requires that the user is e.g. tricked into updating the virus definition file from a malicious site.

The vulnerability has been reported in McAfee VirusScan version 10.0.21 included with McAfee SecurityCenter Agent version 6.0.0.16. Prior versions may also be affected.

Solution:
Update to the fixed version of DUNZIP32.dll via online update.

Provided and/or discovered by:
Originally discovered by eEye Digital Security and NGSSoftware in RealPlayer and RealOne.

Reported in McAfee VirusScan by:
Juha-Matti Laurio

Original Advisory:
http://www.networksecurity.fi/advisories/mcafee-virusscan.html

Other References:
SA12869:
http://secunia.com/advisories/12869/


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