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iDEFENSE Security Advisory 2007-05-09.1

iDEFENSE Security Advisory 2007-05-09.1
Posted May 10, 2007
Authored by iDefense Labs, Peter Vreugdenhil | Site idefense.com

iDefense Security Advisory 05.09.07 - Remote exploitation of a design error vulnerability in an ActiveX control installed by Symantec Norton Internet Security 2006 could allow for the execution of arbitrary code. Defense confirmed the existence of this vulnerability within version 12.2.0.13 of NavOpts.dll as distributed with Norton Internet Security 2006. Prior versions are suspected to be vulnerable.

tags | advisory, remote, arbitrary, activex
advisories | CVE-2006-3456
SHA-256 | c8fe898519159f7cbf84384ab6a00699f5a7103b95f426b56c623aa0a9ba5be8

iDEFENSE Security Advisory 2007-05-09.1

Change Mirror Download
Symantec Norton Internet Security 2006 COM Object Security ByPass
Vulnerability

iDefense Security Advisory 05.09.07
http://labs.idefense.com/intelligence/vulnerabilities/
May 09, 2007

I. BACKGROUND

Norton Internet Security 2006 is a comprehensive system security suite
that offers protection from spyware, viruses, identity theft, spam, and
malicious network traffic. More information can be found on the vendors
site at the following URL.

http://www.symantec.com/home_homeoffice/products/overview.jsp?pcid=is&pvid=nis2006

II. DESCRIPTION

Remote exploitation of a design error vulnerability in an ActiveX
control installed by Symantec Norton Internet Security 2006 could allow
for the execution of arbitrary code.

Norton Internet Security 2006 installs the following ActiveX control
which is registered as safe for scripting:

Progid: Symantec.Norton.AntiVirus.NAVOptions
Clsid: 085ABFE2-D753-445C-8A2A-D4BD46CE0811
File: C:\Program Files\Norton Internet Security\Norton
AntiVirus\NAVOpts.dll
Version: 12.2.0.13

This control was designed for use in a application embedded web browser
rather than a native Internet Explorer window. When this control is
loaded in a standard browser window, it throws an error during
initialization which leaves the browser in a defunct state. After the
error dialog displays, other Symantec ActiveX Controls can be created
without error even if they are not marked as safe for scripting. This
can lead to remote code execution if the unsafe controls contain
exploitable methods.

III. ANALYSIS

Exploitation allows malicious websites to load certain Symantec ActiveX
Controls which were not designed or secured for web use.

This condition can lead to the execution of arbitrary code in situations
where unsafe controls contain exploitable vulnerabilities.

IV. DETECTION

iDefense confirmed the existence of this vulnerability within version
12.2.0.13 of NavOpts.dll as distributed with Norton Internet Security
2006. Prior versions are suspected to be vulnerable.

V. WORKAROUND

Setting the kill-bit for the ActiveX control will prevent this component
from loading in Internet Explorer. Although this will prevent potential
exploitation, it may also negatively impact the functionality of the
application.

VI. VENDOR RESPONSE

Symantec has addressed this vulnerability with a software update. The
update is available via their LiveUpdate channels. For more
information, consult their advisory at the following URL.

http://www.symantec.com/avcenter/security/Content/2007.05.09.html

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2006-3456 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

12/13/2006 Initial vendor notification
12/13/2006 Initial vendor response
05/09/2007 Coordinated public disclosure

IX. CREDIT

This vulnerability was reported to iDefense by Peter Vreugdenhil.

Get paid for vulnerability research
http://labs.idefense.com/methodology/vulnerability/vcp.php

Free tools, research and upcoming events
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@idefense.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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