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iDefense Security Advisory 06.10.10: Adobe Flash Player Use-After-Free Vulnerability
Jun 10, 2010
Adobe Flash Player is a very popular Web browser plugin. It is available
for multiple Web browsers and platforms, including Windows, Linux and
MacOS. Flash Player enables Web browsers to display rich multimedia
content, such as online videos, and is often a requirement for popular
websites. For more information, see the vendor's site at the following
Remote exploitation of a use-after-free vulnerability in Adobe Systems
Inc.'s Flash Player could allow an attacker to execute arbitrary code
with the privileges of the current user. <BR> <BR> The
takes place during the processing of a certain image type within a
certain function. The image is positioned at a location on a linked
list. On return from the function, an object is de-allocated and a
stale pointer continues to reference the object. Arbitrary code
execution can occur when the object is used after it has been
de-allocated. Memory that was previously allocated for the object can
be reused by an attacker.
Exploitation of this vulnerability results 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 Shockwave
Flash file created by an attacker. An attacker typically accomplishes
this via social engineering or injecting content into a compromised,
iDefense has confirmed the existence of this vulnerability in the latest
version of Flash Player at the time of testing, version 10.0.22.87.
Adobe Flash Player versions 10.0.45.2 and prior and Adobe AIR
126.96.36.19930 and prior are vulnerable.
A Internet Explorer plugin is available to temporarily block and unblock
Flash content using a single click. Only trusted sites should be
unblocked when using this plugin. More information is available at
http://flash.melameth.com. <BR> <BR> A Firefox plugin is
temporarily block and unblock Flash content using a single click. Only
trusted sites should be unblocked when using this plugin. More
information is available at: http://flashblock.mozdev.org.
VI. VENDOR RESPONSE
Adobe has released a fix which addresses this issue. Information about
downloadable vendor updates can be found by clicking on the URLs shown.
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2010-2164 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
VIII. DISCLOSURE TIMELINE
12/16/2009 Initial Vendor Notification
12/16/2009 Initial Vendor Reply
06/10/2010 Coordinated Public Disclosure
The discoverer of this vulnerability wishes to remain anonymous.
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X. LEGAL NOTICES
Copyright © 2010 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@xxxxxxxxxxxx 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.