Public Vulnerability Reports

Computer Associates eTrust Intrusion Detection CallCode ActiveX Control Code Execution Vulnerability

07.24.07

BACKGROUND

Computer Associates eTrust Intrusion Detection is a network intrusion management and prevention system, that includes real-time session monitoring and Internet web filtering capabilities. More information can be found on the vendor's site at the following URL.

http://supportconnectw.ca.com/public/etrust/etrust_intrusion/etrustintrusion_supp.asp

DESCRIPTION

Remote exploitation of a design error vulnerability in Computer Associates International Inc.'s (CA) eTrust Intrusion Detection allows attackers to execute arbitrary code.

When eTrust Intrusion Detection is installed it registers the following ActiveX control as safe for scripting:

 File: Caller.dll Clsid: 41266C21-18D8-414B-88C0-8DCA6C25CEA0 

This control contains a series of scriptable functions which allow malicious web pages to load arbitrary DLLs and call their exports with controlled parameters.

ANALYSIS

Exploitation allows an attacker to execute code with the privileges of the currently logged on user. The user would have to be lured into visiting a malicious web page.

DETECTION

iDefense has confirmed that CA eTrust Intrusion Detection version 3.0.5 on Windows is vulnerable. The file version of caller.dll tested was 3.0.5.55.

WORKAROUND

Setting the kill-bit for this control will prevent it from being loaded within Internet Explorer.

VENDOR RESPONSE

Computer Associates has addressed this vulnerability by releasing an update. More information can be found from their advisory at the following URL.

http://supportconnectw.ca.com/public/etrust/etrust_intrusion/infodocs/eid-callervilnsecnot.asp

CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2007-3302 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems.

DISCLOSURE TIMELINE

06/20/2007 Initial vendor notification
06/20/2007 Initial vendor response
07/24/2007 Coordinated public disclosure

CREDIT

This vulnerability was reported to iDefense by Sebastian Apelt.

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LEGAL NOTICES

Copyright © 2007 Verisign, Inc.

Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDefense. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please e-mail customer service for permission.

Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.