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TITLE:
Kingsoft WebShield KAVSafe.sys IOCTL Handling Vulnerability

SECUNIA ADVISORY ID:
SA39916

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/39916/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=39916

RELEASE DATE:
2010-05-24

DISCUSS ADVISORY:
http://secunia.com/advisories/39916/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
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 * Criticality Level
 * Impact
 * Where
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http://secunia.com/advisories/39916/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=39916

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

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:
Restrict local access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Xuanyuan Smart

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
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