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Kingsoft Antivirus kavfm.sys IOCTL Handling Vulnerability

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Release Date:  2010-09-14    Last Update:  2010-09-17    Views:  2,704

Secunia Advisory SA41393

Where:

Local system

Impact:

Privilege escalation, DoS

Solution Status:

Unpatched

CVE Reference(s):

Description


A vulnerability has been reported in Kingsoft Antivirus, which can be exploited by malicious, local users to cause a DoS (Denial of Service) and potentially gain escalated privileges.

The vulnerability is caused due to an error in the kavfm.sys driver when processing IOCTLs. This can be exploited to corrupt kernel memory and potentially execute arbitrary code with escalated privileges via a specially crafted 0x80030004 IOCTL.

The vulnerability is reported in version 2010.04.26.648. Other versions may also be affected.


Solution:
Grant only trusted users access to affected systems.

Provided and/or discovered by:
Lufeng Li, Neusoft Corporation

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: Kingsoft Antivirus kavfm.sys IOCTL Handling Vulnerability

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