[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
iDefense Security Advisory 04.12.11: Microsoft Internet Explorer Use-After-Free Memory Corruption Vulnerability
iDefense Security Advisory 04.12.11
Apr 12, 2011
Internet Explorer is a graphical web browser developed by Microsoft
Corp. that has been included with Microsoft Windows since 1995. For
more information about Internet Explorer, please the visit following
website: <BR> <BR>
Remote exploitation of a use-after-free vulnerability in Microsoft
Corp.'s Internet Explorer could allow an attacker to execute arbitrary
code with the privileges of the current user. <BR> <BR> The
vulnerability occurs when an object is exchanged during a call to a
certain function. The object's memory is freed, however a reference to
the object remains. When the reference is later used to access the
object, this now invalid memory is treated as a valid object and one of
the object members is used to make an indirect function call. This may
result in the execution of arbitrary code.
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 Web page
created by an attacker. An attacker typically accomplishes this via
social engineering or injecting content into compromised, trusted
Internet Explorer versions 6 and 7 are vulnerable.
Active Scripting will prevent the exploitation of this vulnerability.
VI. VENDOR RESPONSE
Microsoft Corp. has released patches which address 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-2011-0094 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
VIII. DISCLOSURE TIMELINE
11/24/2010 Initial Vendor Notification
11/24/2010 Initial Vendor Reply
04/12/2011 Coordinated Public Disclosure
This vulnerability was reported to iDefense by anonymous.
Get paid for vulnerability research
Free tools, research and upcoming events
X. LEGAL NOTICES
Copyright © 2011 Verisign
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.