Published: August 12 2008, 03:04 PM | no comments
by Ken Williams

On August 11th, 2008, CA published a security notice to address two vulnerabilities in the CA Host-Based Intrusion Prevention System SDK.

Title: CA Host-Based Intrusion Prevention System SDK kmxfw.sys Multiple Vulnerabilities

CA Advisory Date: 2008-08-11

Reported By:
CVE-2008-2926 - Tobias Klein
CVE-2008-3174 - Elazar Broad

Impact: A remote attacker can cause a denial of service or possibly execute arbitrary code.

Summary: CA Host-Based Intrusion Prevention System SDK contains two vulnerabilities that can allow an attacker to cause a denial of service or possibly execute arbitrary code.  CA has issued updates to address the vulnerabilities. The first vulnerability, CVE-2008-2926, occurs due to insufficient verification of IOCTL requests by the kmxfw.sys driver. A local attacker can send an IOCTL request that can cause a system crash or potentially result in arbitrary code execution. The second vulnerability, CVE-2008-3174, occurs due to insufficient validation by the kmxfw.sys driver. An attacker can make a request that can cause a system crash.

Mitigating Factors: None

Severity: CA has given these vulnerabilities a Medium risk rating.

Affected Products:
CA Host-Based Intrusion Prevention System r8
CA Internet Security Suite 2007 (v3.2) with CA Personal Firewall 2007 (v9.1) Engine version 1.2.260 and below
CA Internet Security Suite 2008 (v4.0) with CA Personal Firewall 2008 (v10.0) Engine version 1.2.260 and below
CA Personal Firewall 2007 (v9.1) with Engine version 1.2.260 and below
CA Personal Firewall 2008 (v10.0) with Engine version 1.2.260 and below

Affected Platforms:
Windows

Status and Recommendation:
CA has issued the following updates to address the vulnerabilities.

CA Host-Based Intrusion Prevention System r8:
RO00535  - https://support.ca.com/irj/portal/anonymous/redirArticles?reqPage=search&searchID=RO00535

CA Internet Security Suite r3, r4 and CA Personal Firewall 2007, 2008:
Ensure the latest engine is installed by using the built-in update mechanism. CA Personal Firewall Engine 1.2.276 and later are not affected. To ensure that the latest automatic update is installed on your computer, customers can view the Help>About screen in their CA Personal Firewall product and confirm that the engine version number is 1.2.276 or higher. For support information, visit http://shop.ca.com/support.

How to determine if you are affected:
1. Using Windows Explorer, locate the file "kmxfw.sys". By default, the file is located in the "C:\Windows\system32\drivers\" directory.
2. Right click on the file and select Properties.
3. Select the General tab.
4. If the file version is less than indicated in the below table, the installation is vulnerable.

Workaround: None

References (URLs may wrap):
CA Support:
http://support.ca.com/
Security Notice for CA Host-Based Intrusion Prevention System SDK
https://support.ca.com/irj/portal/anonymous/phpsupcontent?contentID=182496
Solution Document Reference APARs:
RO00535
CA Security Response Blog posting:
CA Host-Based Intrusion Prevention System SDK kmxfw.sys Multiple Vulnerabilities
http://community.ca.com/blogs/casecurityresponseblog/archive/2008/08/12.aspx
Reported By:
Tobias Klein (CVE-2008-2926)
http://www.trapkit.de/
Elazar Broad (CVE-2008-3174)
CVE References:
CVE-2008-2926 - CA HIPS kmxfw.sys IOCTL
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2926
CVE-2008-3174 - CA HIPS kmxfw.sys denial of service
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3174
OSVDB References: Pending
http://osvdb.org/

Changelog for this advisory:
v1.0 - Initial Release

Customers who require additional information should contact CA Technical Support at http://support.ca.com.

For technical questions or comments related to this advisory, please send email to vuln AT ca DOT com.

If you discover a vulnerability in CA products, please report your findings to our product security response team.
https://support.ca.com/irj/portal/anonymous/phpsupcontent?contentID=177782