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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X. LEGAL NOTICES
Copyright © 2007 iDefense, Inc.
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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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