full-disclosure - iDefense Security Advisory 07.24.07: Computer Associates eTrust Intrusion Detection CallCode ActiveX Control Code Execution Vulnerability

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Message-ID: <46A67D2F.2070900@idefense.com>
Date: Tue, 24 Jul 2007 18:29:03 -0400
From: iDefense Labs <labs-no-reply@...fense.com>
To: vulnwatch@...nwatch.org,  full-disclosure@...ts.grok.org.uk, 
	bugtraq@...urityfocus.com
Subject: iDefense Security Advisory 07.24.07: Computer
 Associates eTrust Intrusion Detection CallCode ActiveX Control Code
 Execution Vulnerability

Computer Associates eTrust Intrusion Detection CallCode ActiveX Control
Code Execution Vulnerability

iDefense Security Advisory 07.24.07
http://labs.idefense.com/intelligence/vulnerabilities/
Jul 24, 2007

I. 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

II. 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.

III. 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.

IV. 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.

V. WORKAROUND

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

VI. 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

VII. 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.

VIII. DISCLOSURE TIMELINE

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

IX. CREDIT

This vulnerability was reported to iDefense by Sebastian Apelt.

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http://labs.idefense.com/methodology/vulnerability/vcp.php

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http://labs.idefense.com/

X. LEGAL NOTICES

Copyright © 2007 iDefense, 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 customerservice@...fense.com 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.

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