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11/09/2011

Microsoft Security Bulletin Summary for November 2011

1. Introduction

Microsoft(MS)'s regular security updates were released for November 2011.
Users who use MS OS strongly recommended update to be safe from Vulnerability in Reference Counter Overflow, Vulnerability in TrueType Font Parsing, Vulnerability in Windows Mail Insecure Library Loading, and in Active Directory Could Allow Elevation of Privilege.



2. Update details

[Critical]
[MS11-083] Vulnerability in TCP/IP Could Allow Remote Code Execution (2588516)

Vulnerbility: Reference Counter Overflow Vulnerability - CVE-2011-2013

This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if an attacker sends a continuous flow of specially crafted UDP packets to a closed port on a target system.
This security update is rated Critical for all supported editions of Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerability by modifying the way that the Windows TCP/IP stack keeps track of UDP packets within memory. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

Affected Software

- Windows Vista SP2
- Windows Vista x64 Edition SP2
- Windows 7 for 32-bit and Windows 7 for 32bit SP1
- Windows 7 for x64-based and Windows 7 for x64-based SP1
- Windows Server 2008 R2 for x64-based and Windows Server R2 for x64-based SP1
- Windows Server 2008 R2 for Itanium-based and Windows Server 2008 R2 for Itanium SP1

- Reference site

http://technet.microsoft.com/en-us/security/bulletin/ms11-083



[Moderate]
[MS11-084] Vulnerability in TCP/IP Could Allow Remote Code Execution (2588516)

Vulnerbility: TrueType Font Parsing Vulnerability - CVE-2011-2004

This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow denial of service if a user opens a specially crafted TrueType font file as an e-mail attachment or navigates to a network share or WebDAV location containing a specially crafted TrueType font file. For an attack to be successful, a user must visit the untrusted remote file system location or WebDAV share containing the specially crafted TrueType font file, or open the file as an e-mail attachment. In all cases, however, an attacker would have no way to force users to perform these actions. Instead, an attacker would have to persuade users to do so, typically by getting them to click a link in an e-mail message or Instant Messenger message.

Affected Software

- Windows 7 for 32-bit and Windows 7 for 32bit SP1
- Windows 7 for x64-based and Windows 7 for x64-based SP1
- Windows Server 2008 R2 for x64-based and Windows Server R2 for x64-based SP1
- Windows Server 2008 R2 for Itanium-based and Windows Server 2008 R2 for Itanium SP1

- Reference site

http://technet.microsoft.com/en-us/security/bulletin/ms11-084



[Important]
[MS11-085] Vulnerability in Windows Mail and Windows Meeting Space Could Allow Remote Code Execution (2620704)

Vulnerbility: Windows Mail Insecure Library Loading Vulnerability - CVE-2011-2016

This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if a user opens a legitimate file (such as an .eml or .wcinv file) that is located in the same network directory as a specially crafted dynamic link library (DLL) file. Then, while opening the legitimate file, Windows Mail or Windows Meeting Space could attempt to load the DLL file and execute any code it contained. For an attack to be successful, a user must visit an untrusted remote file system location or WebDAV share and open a legitimate file (such as an .eml or .wcinv file) from this location that is then loaded by a vulnerable application.

Affected Software

- Windows Vista SP2
- Windows Vista x64 Edition SP2
- Windows 7 for 32-bit and Windows 7 for 32bit SP1
- Windows 7 for x64-based and Windows 7 for x64-based SP1
- Windows Server 2008 R2 for x64-based and Windows Server R2 for x64-based SP1
- Windows Server 2008 R2 for Itanium-based and Windows Server 2008 R2 for Itanium SP1

- Reference site

http://technet.microsoft.com/en-us/security/bulletin/ms11-085



[Important]
[MS11-086] Vulnerability in Active Directory Could Allow Elevation of Privilege (2630837)

Vulnerbility: LDAPS Authentication Bypass Vulnerability - CVE-2011-2014

This security update resolves a privately reported vulnerability in Active Directory, Active Directory Application Mode (ADAM), and Active Directory Lightweight Directory Service (AD LDS). The vulnerability could allow elevation of privilege if Active Directory is configured to use LDAP over SSL (LDAPS) and an attacker acquires a revoked certificate that is associated with a valid domain account and then uses that revoked certificate to authenticate to the Active Directory domain. By default, Active Directory is not configured to use LDAP over SSL.

Affected Software

- Windows XP SP3
- Windows XP Professional x64 Edition SP2
- Windows Server 2003 SP2
- Windows Server 2003 x64 Edition SP2
- Windows Server 2003 SP2 Itanium-based
- Windows Vista SP2
- Windows Vista x64 Edition SP2
- Windows Server 2008 for 32bit and Windows 2008 for 32bit SP2
- Windows Server 2008 for x64-based and Windows Server 2008 for x64-based SP2
- Windows Server 2008 for Itanium-based and Windows Server 2008 for Itanium SP2
- Windows 7 for 32-bit and Windows 7 for 32bit SP1
- Windows 7 for x64-based and Windows 7 for x64-based SP1
- Windows Server 2008 R2 for x64-based and Windows Server R2 for x64-based SP1
- Windows Server 2008 R2 for Itanium-based and Windows Server 2008 R2 for Itanium SP1

- Reference site

http://technet.microsoft.com/en-us/security/bulletin/ms11-086

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