VUPEN Security Research - Microsoft Windows GDI+ Size Handling Integer 
Overflow Vulnerability

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


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 critical vulnerability
in Microsoft Windows.

The vulnerability is caused by an integer overflow error in the GDI+ library
when parsing certain values within a EMF image file, which could be 
exploited
by attackers to compromise a vulnerable system by tricking a user into 
visiting
a specially crafted web page.

CVSS Score: 10 (AV:N/AC:L/Au:N/C:C/I:C/A:C) / CVE-2011-0041


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)
Microsoft Windows Vista Service Pack 1
Microsoft Windows Vista Service Pack 2
Microsoft Windows Vista x64 Edition Service Pack 1
Microsoft Windows Vista x64 Edition Service Pack 2
Microsoft Windows Server 2008 (32-bit)
Microsoft Windows Server 2008 (32-bit) Service Pack 2
Microsoft Windows Server 2008 (64x)
Microsoft Windows Server 2008 (64x) Service Pack 2
Microsoft Windows Server 2008 (Itanium)
Microsoft Windows Server 2008 (Itanium) Service Pack 2


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 Service :

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


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

To proactively protect critical networks and infrastructures against 
unpatched
vulnerabilities and reduce risks related to zero-day attacks, VUPEN shares 
its
vulnerability research with governments and organizations members of the 
VUPEN
Threat Protection Program (TPP).

VUPEN TPP customers receive fully detailed and technical reports about 
security
vulnerabilities discovered by VUPEN and in advance of their public 
disclosure.

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


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

Apply the MS11-029 security update.


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

This vulnerability was discovered by Nicolas Joly and Chaouki Bekrar of 
VUPEN Security


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

VUPEN is a leading IT security research company providing vulnerability
management and security intelligence solutions which enable enterprises
and institutions to eliminate vulnerabilities before they can be exploited,
ensure security policy compliance and meaningfully measure and manage risks.

Governmental and federal agencies, and global enterprises in the financial
services, insurance, manufacturing and technology industries rely on VUPEN
to improve their security, prioritize resources, cut time and costs, and
stay ahead of the latest threats.

* VUPEN Vulnerability Notification Service (VNS) :
http://www.vupen.com/english/services/vns-index.php

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

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

* VUPEN Web Application Security Scanner (WASS) :
http://www.vupen.com/english/services/wass-index.php


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

http://www.vupen.com/english/research-vuln.php
http://www.vupen.com/english/advisories/2011/0946
http://www.microsoft.com/technet/security/Bulletin/MS11-029.mspx


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

2010-02-01 - Vulnerability Discovered by VUPEN
2011-04-12 - MS11-029 security update released