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iDEFENSE Security Advisory 2008-04-02.2

iDEFENSE Security Advisory 2008-04-02.2
Posted Apr 4, 2008
Authored by iDefense Labs, Peter Vreugdenhil | Site idefense.com

iDefense Security Advisory 04.02.08 - Remote exploitation of a buffer overflow vulnerability in an ActiveX control installed by Symantec Norton Internet Security 2008 could allow for the execution of arbitrary code. iDefense confirmed that this vulnerability exists in version 2.7.0.1 of the control that is installed with the 2008 version of Norton Internet Security. Other versions may also be available.

tags | advisory, remote, overflow, arbitrary, activex
advisories | CVE-2008-0312
SHA-256 | ca21fd621e3cf9ded91bc115596d8b243f9c036394ddb1f9f3db5e74c636c369

iDEFENSE Security Advisory 2008-04-02.2

Change Mirror Download
iDefense Security Advisory 04.02.08
http://labs.idefense.com/intelligence/vulnerabilities/
Apr 02, 2008

I. BACKGROUND

Norton Internet Security 2008 is a system security suite that offers
protection from spyware, viruses, identity theft, spam, and malicious
network traffic. More information can be found on the vendor's site at
the following URL.

http://www.symantec.com/home_homeoffice/products/overview.jsp?pcid=is&pvid=nis2008

II. DESCRIPTION

Remote exploitation of a buffer overflow vulnerability in an ActiveX
control installed by Symantec Norton Internet Security 2008 could allow
for the execution of arbitrary code.

Norton Internet Security 2008 installs the following ActiveX control
which is registered as safe for scripting:

Clsid: 3451DEDE-631F-421c-8127-FD793AFC6CC8
File: C:\PROGRA~1\COMMON~1\SYMANT~1\SUPPOR~1\SymAData.dll
Version 2.7.0.1

This control contains an exploitable stack based buffer overflow.

III. ANALYSIS

Exploitation allows attackers to execute arbitrary code with the
privileges of the currently logged in user. In order for exploitation
to occur, an attacker would have to lure a vulnerable user to a
malicious web site.

While this control is marked as safe for scripting, the control has been
designed so that it can only be run from the "symantec.com" domain. In
practice this requirement can be bypassed through the use of any Cross
Site Scripting (XSS) vulnerabilities in the Symantec domain.
Exploitation could also occur through the use of DNS poisoning attacks.

IV. DETECTION

iDefense confirmed that this vulnerability exists in version 2.7.0.1 of
the control that is installed with the 2008 version of Norton Internet
Security. Other versions may also be available.

V. WORKAROUND

Setting the kill-bit for this control will prevent it from being loaded
within Internet Explorer. However, doing so will prevent legitimate use
of the control.

VI. VENDOR RESPONSE

Symantec has addressed this vulnerability by releasing updates. For more
information, refer to their advisory at the following URL.

http://www.symantec.com/avcenter/security/Content/2008.04.02a.html

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2008-0312 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

12/05/2007 Initial vendor notification
12/05/2007 Initial vendor response
04/02/2008 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 © 2008 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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