Security Advisory SA39916 - Kingsoft WebShield KAVSafe.sys IOCTL Handling Vulnerability

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Secunia Advisory SA39916

Kingsoft WebShield KAVSafe.sys IOCTL Handling Vulnerability

Secunia Advisory

SA39916

Release Date

2010-05-24

Last Update

2010-05-26

Popularity

20,581 views

Comments

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Criticality level

Less critical

Impact

Privilege escalation
DoS

Where

Local system

Authentication level

This information is available to Secunia VIM customers

Report reliability

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Solution Status

Vendor Patch

Systems affected

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Approve distribution

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Software:

Kingsoft WebShield 3.x

Secunia CVSS Score

This information is available to Secunia VIM Customers

CVE Reference(s)

CVE-2010-2031 CVSS score available to Secunia VIM customers

Description

Xuanyuan Smart has reported a vulnerability in Kingsoft WebShield, which can be exploited by malicious, local users to cause a DoS (Denial of Service) or potentially gain escalated privileges.

The vulnerability is caused due to an error in the KAVSafe.sys driver when processing IOCTLs. This can be exploited to corrupt kernel memory and potentially execute arbitrary code with SYSTEM privileges via a specially crafted 830020D4h IOCTL.

The vulnerability is reported in version 3.5.1.2. Other versions may also be affected.

Solution
Update to the latest Kingsoft WebShield version.

Provided and/or discovered by
Xuanyuan Smart

Changelog
Further details available to Secunia VIM customers

Deep Links
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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 WebShield KAVSafe.sys IOCTL Handling Vulnerability

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Secunia Advisory SA39916

Kingsoft WebShield KAVSafe.sys IOCTL Handling Vulnerability

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