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Microsoft Windows Time Behaviour Remote Use-After-Free

Microsoft Windows Time Behaviour Remote Use-After-Free
Posted Dec 19, 2011
Authored by Nicolas Joly, VUPEN | Site vupen.com

VUPEN Vulnerability Research Team discovered a vulnerability in Microsoft Windows. The vulnerability is caused by a use-after-free error in the "mshtml.dll" module when handling a specific Time behavior, which could be exploited by remote attackers to compromise a vulnerable system via a specially crafted web page.

tags | advisory, remote, web
systems | windows
SHA-256 | cba9bea32ea67c8da60c966ebfc113a9ade45175f2c308da67602f022e70e159

Microsoft Windows Time Behaviour Remote Use-After-Free

Change Mirror Download
VUPEN Security Research - Microsoft Windows Time Behaviour Remote 
Use-after-free Vulnerability (MS11-090)

Website : http://www.vupen.com/english/research.php

Twitter : http://twitter.com/vupen


I. BACKGROUND
---------------------

Microsoft Windows is a series of software operating systems and graphical
user interfaces produced by Microsoft. Windows had approximately 90% of
the market share of the client operating systems. (Wikipedia)


II. DESCRIPTION
---------------------

VUPEN Vulnerability Research Team discovered a vulnerability in Microsoft
Windows.

The vulnerability is caused by a use-after-free error in the "mshtml.dll"
module when handling a specific Time behavior, which could be exploited by
remote attackers to compromise a vulnerable system via a specially crafted
web page.


III. AFFECTED PRODUCTS
---------------------------

Microsoft Windows XP Service Pack 3
Microsoft Windows XP Professional x64 Edition Service Pack 2
Microsoft Windows Server 2003 Service Pack 2
Microsoft Windows Server 2003 x64 Edition Service Pack 2
Microsoft Windows Server 2003 SP2 (Itanium)


IV. Binary Analysis & Exploits/PoCs
---------------------------------------

In-depth binary analysis of the vulnerability and a code execution exploit
are available through the VUPEN Binary Analysis & Exploits portal :

http://www.vupen.com/english/services/ba-index.php


VUPEN Binary Analysis & Exploits Service provides private exploits and
in-depth technical analysis of the most significant public vulnerabilities
based on disassembly, reverse engineering, protocol analysis, and code
audit.

The service allows governments and major corporations to evaluate risks, and
protect infrastructures and assets against new threats. The service also
allows security vendors (IPS, IDS, AntiVirus) to supplement their internal
research efforts and quickly develop both vulnerability-based and
exploit-based signatures to proactively protect their customers from attacks
and emerging threats.


V. VUPEN Threat Protection Program
-----------------------------------

Governments and major corporations which are members of the VUPEN Threat
Protection Program (TPP) have been proactively alerted about the
vulnerability
when it was discovered by VUPEN in advance of its public disclosure, and
have received a detailed attack detection guidance to protect national and
critical infrastructures against potential 0-day attacks exploiting this
vulnerability:

http://www.vupen.com/english/services/tpp-index.php


VI. SOLUTION
----------------

Apply the MS11-090 security update.


VII. CREDIT
--------------

This vulnerability was discovered by Nicolas Joly of VUPEN Security


VIII. ABOUT VUPEN Security
---------------------------

VUPEN is the world leader in vulnerability research for defensive and
offensive cyber security. VUPEN solutions enable corporations and
governments
to measure and manage risks, eliminate vulnerabilities before they can be
exploited, and protect critical infrastructures and assets against known and
unknown vulnerabilities.

VUPEN has been recognized as "Company of the Year 2011 in the Vulnerability
Research Market" by Frost & Sullivan.

VUPEN solutions include:

* VUPEN Binary Analysis & Exploits Service (BAE) :
http://www.vupen.com/english/services/ba-index.php

* VUPEN Threat Protection Program (TPP) :
http://www.vupen.com/english/services/tpp-index.php


IX. REFERENCES
----------------------

http://technet.microsoft.com/en-us/security/bulletin/ms11-090
http://www.vupen.com/english/research.php


X. DISCLOSURE TIMELINE
-----------------------------

2010-11-23 - Vulnerability Discovered by VUPEN and shared with TPP customers
2011-12-16 - Public disclosure

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