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AhnLab V3 Antivirus ALZ/UUE/XXE Archive Handling Buffer Overflow
Secunia Advisory: SA16851
Release Date: 2005-10-13
Popularity: 10,182 views

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

Software:AhnLab MyV3
AhnLab V3Net for Windows Server 6.x
AhnLab V3Pro 2004 (AhnLab V3 VirusBlock 2005)

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Secunia Research has discovered a vulnerability in AhnLab V3 Antivirus, which can be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to a boundary error in the archive decompression library when reading the filename of a compressed file from an ALZ, UUE or XXE archive. This can be exploited to cause a stack-based buffer overflow (ALZ), or a heap-based buffer overflow (UUE/XXE), when a malicious ALZ/UUE/XXE archive is scanned.

Successful exploitation allows arbitrary code execution, but requires that compressed file scanning is enabled.

The vulnerability has been confirmed in the following products:
* AhnLab V3Pro 2004 (AhnLab V3 VirusBlock 2005 international) (Build 6.0.0.457)
* AhnLab V3Net for Windows Server 6.0 (Build 6.0.0.457)
* AhnLab MyV3 with AzMain.dll 1.3.11.15

Prior versions may also be affected.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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