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Date: Thu, 14 Dec 2006 12:43:45 -0500
From: "Williams, James K" <>
To: <>
Subject: [CAID 34870]: CA Anti-Virus vetfddnt.sys,
	vetmonnt.sys Local Denial of Service Vulnerabilities

Hash: SHA1

Title: CAID 34870: CA Anti-Virus vetfddnt.sys, vetmonnt.sys Local 
Denial of Service Vulnerabilities

CA Vulnerability ID (CAID): 34870

CA Advisory Date: 2006-12-13

Discovered By: Rubén Santamarta (

Impact: Local unprivileged attacker can cause a denial of service.

Summary: Multiple instances of improper handling of NULL buffers 
in CA Anti-Virus allow local attackers to cause a denial of 
service condition.  This issue affects only consumer CA Anti-Virus 

Mitigating Factors: Valid user account is required for successful 

Severity: CA has given this vulnerability issue a Low risk rating.

Affected Products:
Consumer Products:
CA Anti-Virus 2007 v8.1
CA Anti-Virus for Vista Beta v8.2
CA Internet Security Suite 2007 v3.0

Affected platforms:
Microsoft Windows

Status and Recommendation: 
CA has addressed this issue in the GA (Generally Available) 
software by providing a new automatic update on December 13, 2006. 
Customers running one of the GA products simply need to ensure 
that they have allowed this automatic update to take place.  For 
CA Anti-Virus for Vista Beta, this issue will be patched in the GA 
release of the software.

Determining if you are affected: 
View the Help>About screen and confirm that the product version is or above.  You can also verify application of the update 
by confirming that the vetfddnt.sys and vetmonnt.sys driver 
versions are or above. These files are located in the 
%windows%\system32\drivers folder.

References (URLs may wrap): 
CA SupportConnect:
CA SupportConnect Security Notice for this vulnerability:
CA Consumer Support Security Notice for this vulnerability:
Low Risk CA Anti-Virus Vulnerability - Multiple Local Denial of 
Solution Document Reference APARs: 
CA Security Advisor posting:
CA Anti-Virus vetfddnt.sys, vetmonnt.sys Local Denial of Service 
CAID: 34870
CAID Advisory links:
Discoverer: Rubén Santamarta, Reverse Mode
CVE Reference: CVE-2006-6496
OSVDB Reference: OSVDB ID: 30845

Changelog for this advisory:
v1.0 - Initial Release

Customers who require additional information should contact CA 
Technical Support at

For technical questions or comments related to this advisory,
please send email to, or contact me directly.

If you discover a vulnerability in CA products, please report
your findings to, or utilize our "Submit a 
Vulnerability" form.

Ken Williams ; 0xE2941985
Director, CA Vulnerability Research

CA, One CA Plaza. Islandia, NY 11749
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