Microsoft Security Bulletin MS12-075 - Critical

Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Remote Code Execution (2761226)

Published: | Updated:

Version: 1.1

General Information

Executive Summary

This security update resolves three privately reported vulnerabilities in Microsoft Windows. The most severe of these vulnerabilities could allow remote code execution if a user opens a specially crafted document or visits a malicious webpage that embeds TrueType font files. An attacker would have to convince users to visit the website, typically by getting them to click a link in an email message that takes them to the attacker's website.

This security update is rated Critical for all supported releases of Microsoft Windows. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerabilities by correcting the way that the Windows kernel-mode drivers handle objects in memory. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

Recommendation. The majority of customers have automatic updating enabled and will not need to take any action because this security update will be downloaded and installed automatically. Customers who have not enabled automatic updating need to check for updates and install this update manually. For information about specific configuration options in automatic updating, see Microsoft Knowledge Base Article 294871.

For administrators and enterprise installations, or end users who want to install this security update manually, Microsoft recommends that customers apply the update immediately using update management software, or by checking for updates using the Microsoft Update service.

See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.

Known Issues. None

Affected and Non-Affected Software

The following software have been tested to determine which versions or editions are affected. Other versions or editions are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, see Microsoft Support Lifecycle.

Affected Software 

Operating SystemMaximum Security ImpactAggregate Severity RatingUpdates Replaced
Windows XP Service Pack 3
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows XP Professional x64 Edition Service Pack 2
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2003 Service Pack 2
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2003 x64 Edition Service Pack 2
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2003 with SP2 for Itanium-based Systems
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows Vista Service Pack 2
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows Vista x64 Edition Service Pack 2
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2008 for 32-bit Systems Service Pack 2
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2008 for x64-based Systems Service Pack 2
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2008 for Itanium-based Systems Service Pack 2
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows 7 for 32-bit Systems
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows 7 for 32-bit Systems Service Pack 1
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows 7 for x64-based Systems
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows 7 for x64-based Systems Service Pack 1
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2008 R2 for x64-based Systems
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2008 R2 for x64-based Systems Service Pack 1
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2008 R2 for Itanium-based Systems
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
(KB2761226)
Remote Code ExecutionCriticalKB2731847 in MS12-055 replaced by KB2761226
Windows 8 for 32-bit Systems
(KB2761226)
Remote Code ExecutionCriticalNone
Windows 8 for 64-bit Systems
(KB2761226)
Remote Code ExecutionCriticalNone
Windows Server 2012
(KB2761226)
Remote Code ExecutionCriticalNone
Windows RT[1]
(KB2761226)
Remote Code ExecutionCriticalNone
Server Core installation option
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
(KB2761226)
Elevation of PrivilegeImportantKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
(KB2761226)
Elevation of PrivilegeImportantKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2008 R2 for x64-based Systems (Server Core installation)
(KB2761226)
Elevation of PrivilegeImportantKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
(KB2761226)
Elevation of PrivilegeImportantKB2731847 in MS12-055 replaced by KB2761226
Windows Server 2012 (Server Core installation)
(KB2761226)
Elevation of PrivilegeImportantNone

[1]This update is available via Windows Update only.

Frequently Asked Questions (FAQ) Related to This Security Update

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

Win32k Use After Free Vulnerability - CVE-2012-2530

Win32k Use After Free Vulnerability - CVE-2012-2553

TrueType Font Parsing Vulnerability - CVE-2012-2897

Update Information

Detection and Deployment Tools and Guidance

Security Update Deployment

Other Information

Acknowledgments

Microsoft thanks the following for working with us to help protect customers:

  • Mateusz "j00ru" Jurczyk of Google Inc for reporting the Windows Kernel win32k.sys Use After Free Vulnerability (CVE-2012-2553)
  • Eetu Luodemaa and Joni Vähämäki of Documill, working with the Chromium Security Rewards Program, for reporting the TrueType Font Parsing Vulnerability (CVE-2012-2897)

Microsoft Active Protections Program (MAPP)

To improve security protections for customers, Microsoft provides vulnerability information to major security software providers in advance of each monthly security update release. Security software providers can then use this vulnerability information to provide updated protections to customers via their security software or devices, such as antivirus, network-based intrusion detection systems, or host-based intrusion prevention systems. To determine whether active protections are available from security software providers, please go to the active protections websites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.

Support

How to obtain help and support for this security update

Disclaimer

The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

Revisions

  • V1.0 (November 13, 2012): Bulletin published.
  • V1.1 (November 13, 2012): Corrected vulnerability title and FAQ entries for CVE-2012-2897. This is an informational change only.