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iDEFENSE Security Advisory 2011-02-08.3

iDEFENSE Security Advisory 2011-02-08.3
Posted Feb 9, 2011
Authored by iDefense Labs, Andrzej Dyjak | Site idefense.com

iDefense Security Advisory 02.08.11 - Remote exploitation of a memory corruption vulnerability in Adobe Systems Inc.'s Shockwave Player could allow an attacker to execute arbitrary code with the privileges of the current user. The vulnerability takes place during the processing of a malicious Adobe Director file. A malicious user could cause a memory corruption by including malformed data in a chunk. This condition may lead to arbitrary code execution. iDefense has confirmed the existence of this vulnerability in Shockwave Player version 11.5.8.612 and version 11.5.9.615 (the latest version at the time of testing). A full list of vulnerable Adobe products can be found in Adobe Security Bulletin APSB11-01.

tags | advisory, remote, arbitrary, code execution
advisories | CVE-2011-4187
SHA-256 | 004f9f99eb403ab4abbeaa49b8e7d6edcd9e5d746d21146c4503da633a1ca603

iDEFENSE Security Advisory 2011-02-08.3

Change Mirror Download
iDefense Security Advisory 02.08.11
http://labs.idefense.com/intelligence/vulnerabilities/
Feb 08, 2011

I. BACKGROUND

Adobe Shockwave Player is a popular Web browser plug-in. It is available
for multiple Web browsers and platforms, including Windows, and MacOS.
Shockwave Player enables Web browsers to display rich multimedia
content in the form of Shockwave videos. For more information, see the
vendor's site found at the following link:

http://get.adobe.com/shockwave

II. DESCRIPTION

Remote exploitation of a memory corruption vulnerability in Adobe
Systems Inc.'s Shockwave Player could allow an attacker to execute
arbitrary code with the privileges of the current user.

The vulnerability takes place during the processing of a malicious Adobe
Director file. A malicious user could cause a memory corruption by
including malformed data in a chunk. This condition may lead to
arbitrary code execution.

III. ANALYSIS

Exploitation could result in the execution of arbitrary code with the
privileges of the user viewing the Web page. To exploit this
vulnerability, a targeted user must load a malicious Adobe Director
file created by an attacker. An attacker typically accomplishes this
via social engineering or injecting content into a compromised, trusted
site.

IV. DETECTION

iDefense has confirmed the existence of this vulnerability in Shockwave
Player version 11.5.8.612 and version 11.5.9.615 (the latest version at
the time of testing). A full list of vulnerable Adobe products can be
found in Adobe Security Bulletin APSB11-01.

V. WORKAROUND

The killbit for the Shockwave Player ActiveX control can be set by
creating the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX
Compatibility\{233C1507-6A77-46A4-9443-F871F945D258}

Under this key create a new DWORD value called "Compatibility Flags" and
set its hexadecimal value to 400.

To re-enable Shockwave Player set the "Compatibility Flags" value to 0.

VI. VENDOR RESPONSE

Adobe has addressed this issue with an update. Further details and
patches can be found at the following URL.

http://www.adobe.com/support/security/bulletins/apsb11-01.html

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2010-4187 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

11/03/2010 Initial Vendor Notification
11/03/2010 Initial Vendor Reply
02/08/2011 Coordinated Public Disclosure

IX. CREDIT

This vulnerability was reported to iDefense by Andrzej Dyjak.

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 © 2011 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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