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Microsoft Security Bulletin MS12-078 - Critical

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

Published: December 11, 2012 | Updated: December 20, 2012

Version: 2.0

General Information

Executive Summary

This security update resolves one publicly disclosed vulnerability and one privately reported vulnerability in Microsoft Windows. The more 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 or OpenType 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 (except Server Core installations, which are rated Important). 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. Microsoft Knowledge Base Article 2783534 documents the currently known issues that customers may experience when installing this security update. The article also documents recommended solutions for these issues.

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
Windows XP Service Pack 3
(KB2753842)

Windows XP Service Pack 3
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows XP Professional x64 Edition Service Pack 2
(KB2753842)

Windows XP Professional x64 Edition Service Pack 2
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2003
Windows Server 2003 Service Pack 2
(KB2753842)

Windows Server 2003 Service Pack 2
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2003 x64 Edition Service Pack 2
(KB2753842)

Windows Server 2003 x64 Edition Service Pack 2
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2003 with SP2 for Itanium-based Systems
(KB2753842)

Windows Server 2003 with SP2 for Itanium-based Systems
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Vista
Windows Vista Service Pack 2
(KB2753842)

Windows Vista Service Pack 2
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Vista x64 Edition Service Pack 2
(KB2753842)

Windows Vista x64 Edition Service Pack 2
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2008
Windows Server 2008 for 32-bit Systems Service Pack 2
(KB2753842)

Windows Server 2008 for 32-bit Systems Service Pack 2
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2008 for x64-based Systems Service Pack 2
(KB2753842)

Windows Server 2008 for x64-based Systems Service Pack 2
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2008 for Itanium-based Systems Service Pack 2
(KB2753842)

Windows Server 2008 for Itanium-based Systems Service Pack 2
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows 7
Windows 7 for 32-bit Systems
(KB2753842)

Windows 7 for 32-bit Systems
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows 7 for 32-bit Systems Service Pack 1
(KB2753842)

Windows 7 for 32-bit Systems Service Pack 1
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows 7 for x64-based Systems
(KB2753842)

Windows 7 for x64-based Systems
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows 7 for x64-based Systems Service Pack 1
(KB2753842)

Windows 7 for x64-based Systems Service Pack 1
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2008 R2
Windows Server 2008 R2 for x64-based Systems
(KB2753842)

Windows Server 2008 R2 for x64-based Systems
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2008 R2 for x64-based Systems Service Pack 1
(KB2753842)

Windows Server 2008 R2 for x64-based Systems Service Pack 1
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2008 R2 for Itanium-based Systems
(KB2753842)

Windows Server 2008 R2 for Itanium-based Systems
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
(KB2753842)

Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
(KB2779030)
Remote Code ExecutionCriticalKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows 8
Windows 8 for 32-bit Systems
(KB2753842)

Windows 8 for 32-bit Systems
(KB2779030)
Remote Code ExecutionCriticalNo updates replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows 8 for 64-bit Systems
(KB2753842)

Windows 8 for 64-bit Systems
(KB2779030)
Remote Code ExecutionCriticalNo updates replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2012
Windows Server 2012
(KB2753842)

Windows Server 2012
(KB2779030)
Remote Code ExecutionCriticalNo updates replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows RT[1]
(KB2753842)

Windows RT[1]
(KB2779030)
Remote Code ExecutionCriticalNo updates replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Server Core installation option
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
(KB2753842)

Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
(KB2779030)
Elevation of PrivilegeImportantKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
(KB2753842)

Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
(KB2779030)
Elevation of PrivilegeImportantKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2008 R2 for x64-based Systems (Server Core installation)
(KB2753842)

Windows Server 2008 R2 for x64-based Systems (Server Core installation)
(KB2779030)
Elevation of PrivilegeImportantKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
(KB2753842)

Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
(KB2779030)
Elevation of PrivilegeImportantKB2507618 in MS11-032 replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030
Windows Server 2012 (Server Core installation)
(KB2753842)

Windows Server 2012 (Server Core installation)
(KB2779030)
Elevation of PrivilegeImportantNo updates replaced by KB2753842

KB2761226 in MS12-075 replaced by KB2779030

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

Why was this bulletin rereleased on December 20, 2012? 
Microsoft rereleased this bulletin to address a known issue in the KB2753842 update related to OpenType Fonts (OTF) not properly rendering in applications after the original update was applied. Customers who have successfully installed the original KB2753842 update are protected from the vulnerability described in CVE-2012-2556. However, customers need to install the rereleased KB2753842 update to resolve the issue with improper OpenType font rendering and to keep the affected binaries up to date.

Note No rereleased packages are available for Windows 8 Release Preview and Windows Server 2012 Release Candidate. Windows 8 Release Preview and Windows Server 2012 Release Candidate are out of support.

Where are the file information details? 
Refer to the reference tables in the Security Update Deployment section for the location of the file information details.

Where are the hashes of the security updates? 
The SHA1 and SHA2 hashes of the security updates can be used to verify the authenticity of downloaded security update packages. For the hash information pertaining to this update, see Microsoft Knowledge Base Article 2783534.

Are Windows 8 Release Preview and Windows Server 2012 Release Candidate affected by the vulnerabilities addressed in this bulletin? 
Yes. The KB2753842 and KB2779030 updates are available for Windows 8 Release Preview and Windows Server 2012 Release Candidate. Customers with Windows 8 Release Preview and Windows Server 2012 Release Candidate are encouraged to apply the updates to their systems. The updates are only available on Windows Update.

I am using an older release of the software discussed in this security bulletin. What should I do? 
The affected software listed in this bulletin have been tested to determine which releases are affected. Other releases are past their support life cycle. For more information about the product lifecycle, see the Microsoft Support Lifecycle website.

It should be a priority for customers who have older releases of the software to migrate to supported releases to prevent potential exposure to vulnerabilities. To determine the support lifecycle for your software release, see Select a Product for Lifecycle Information. For more information about service packs for these software releases, see Service Pack Lifecycle Support Policy.

Customers who require custom support for older software must contact their Microsoft account team representative, their Technical Account Manager, or the appropriate Microsoft partner representative for custom support options. Customers without an Alliance, Premier, or Authorized Contract can contact their local Microsoft sales office. For contact information, see the Microsoft Worldwide Information website, select the country in the Contact Information list, and then click Go to see a list of telephone numbers. When you call, ask to speak with the local Premier Support sales manager. For more information, see the Microsoft Support Lifecycle Policy FAQ.

Vulnerability Information

The following severity ratings assume the potential maximum impact of the vulnerability. For information regarding the likelihood, within 30 days of this security bulletin's release, of the exploitability of the vulnerability in relation to its severity rating and security impact, please see the Exploitability Index in the December bulletin summary. For more information, see Microsoft Exploitability Index.

Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected SoftwareOpenType Font Parsing Vulnerability - CVE-2012-2556TrueType Font Parsing Vulnerability - CVE-2012-4786Aggregate Severity Rating
Windows XP Service Pack 3 Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows XP Professional x64 Edition Service Pack 2 Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Server 2003 Service Pack 2 Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Server 2003 x64 Edition Service Pack 2 Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Server 2003 with SP2 for Itanium-based SystemsCritical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Vista Service Pack 2Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Vista x64 Edition Service Pack 2Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Server 2008 for 32-bit Systems Service Pack 2Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Server 2008 for x64-based Systems Service Pack 2Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Server 2008 for Itanium-based Systems Service Pack 2Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows 7 for 32-bit SystemsCritical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows 7 for 32-bit Systems Service Pack 1Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows 7 for x64-based SystemsCritical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows 7 for x64-based Systems Service Pack 1Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Server 2008 R2 for x64-based SystemsCritical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Server 2008 R2 for x64-based Systems Service Pack 1Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Server 2008 R2 for Itanium-based SystemsCritical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows 8 for 32-bit Systems Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows 8 for 64-bit SystemsCritical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows Server 2012Critical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Windows RTCritical 
Remote Code Execution
Critical 
Remote Code Execution
Critical
Server Core Installation Option
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)Important 
Elevation of Privilege
Important 
Elevation of Privilege
Important
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)Important 
Elevation of Privilege
Important 
Elevation of Privilege
Important
Windows Server 2008 R2 for x64-based Systems (Server Core installation)Important 
Elevation of Privilege
Important 
Elevation of Privilege
Important
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)Important 
Elevation of Privilege
Important 
Elevation of Privilege
Important
Windows Server 2012 (Server Core installation)Important 
Elevation of Privilege
Important 
Elevation of Privilege
Important

A remote code execution vulnerability exists in the way that affected components handle a specially crafted OpenType font file. The vulnerability could allow remote code execution if a user opens a specially crafted OpenType font file. An attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full administrative rights.

To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2012-2556.

Mitigating Factors for OpenType Font Parsing Vulnerability - CVE-2012-2556

Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors may be helpful in your situation:

  • In a web browsing attack scenario, an attacker could host a website that contains a webpage that is used to exploit this vulnerability. In addition, compromised websites and websites that accept or host user-provided content or advertisements could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these websites. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes users to the attacker's website.
  • By default, all supported versions of Microsoft Outlook, Microsoft Outlook Express, and Windows Mail open HTML email messages in the Restricted sites zone, which disables font download by default. If a user clicks a link in an email message, the user could still be vulnerable to exploitation of this vulnerability through the web-based attack scenario. The vulnerability could also be exploited if a user opens an attachment that is sent in an email message.
  • The malicious file could be sent as an email attachment, but the attacker would have to convince the user to open the attachment in order to exploit the vulnerability.

Workarounds for OpenType Font Parsing Vulnerability - CVE-2012-2556

Workaround refers to a setting or configuration change that does not correct the underlying vulnerability but would help block known attack vectors before you apply the update. Microsoft has tested the following workarounds and states in the discussion whether a workaround reduces functionality.

  • Disable the WebClient service

    Disabling the WebClient service helps protect affected systems from attempts to exploit this vulnerability by blocking the most likely remote attack vector through the Web Distributed Authoring and Versioning (WebDAV) client service. After applying this workaround it is still possible for remote attackers who successfully exploit this vulnerability to cause the system to run programs located on the targeted user's computer or the Local Area Network (LAN), but users will be prompted for confirmation before opening arbitrary programs from the Internet.

    To disable the WebClient Service, follow these steps:

    1. Click Start, click Run, type Services.msc and then click OK.
    2. Right-click WebClient service and select Properties.
    3. Change the Startup type to Disabled. If the service is running, click Stop.
    4. Click OK and exit the management application.

    Impact of workaround. When the WebClient service is disabled, Web Distributed Authoring and Versioning (WebDAV) requests are not transmitted. In addition, any services that explicitly depend on the Web Client service will not start, and an error message will be logged in the System log. For example, WebDAV shares will be inaccessible from the client computer.

    How to undo the workaround.

    To re-enable the WebClient Service, follow these steps:

    1. Click Start, click Run, type Services.msc and then click OK.
    2. Right-click WebClient service and select Properties.
    3. Change the Startup type to Automatic. If the service is not running, click Start.
    4. Click OK and exit the management application.
  • Block TCP ports 139 and 445 at the firewall

    These ports are used to initiate a connection with the affected component. Blocking TCP ports 139 and 445 at the firewall will help protect systems that are behind that firewall from attempts to exploit this vulnerability. Microsoft recommends that you block all unsolicited inbound communication from the Internet to help prevent attacks that may use other ports. For more information about ports, see the TechNet article, TCP and UDP Port Assignments.

    Impact of workaround. Several Windows services use the affected ports. Blocking connectivity to the ports may cause various applications or services to not function. Some of the applications or services that could be impacted are listed below:

    • Applications that use SMB (CIFS)
    • Applications that use mailslots or named pipes (RPC over SMB)
    • Server (File and Print Sharing)
    • Group Policy
    • Net Logon
    • Distributed File System (DFS)
    • Terminal Server Licensing
    • Print Spooler
    • Computer Browser
    • Remote Procedure Call Locator
    • Fax Service
    • Indexing Service
    • Performance Logs and Alerts
    • Systems Management Server
    • License Logging Service

    How to undo the workaround. Unblock TCP ports 139 and 445 at the firewall. For more information about ports, see TCP and UDP Port Assignments.

  • Disable the Preview Pane and Details Pane in Windows Explorer

    Disabling the Preview and Details panes in Windows Explorer prevents OTF fonts from being viewed in Windows Explorer. While this prevents malicious files from being viewed in Windows Explorer, it does not prevent a local, authenticated user from running a specially crafted program to exploit this vulnerability.

    To disable these panes in Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2, perform the following steps:

    1. Open Windows Explorer, click Organize, and then click Layout.
    2. Clear both the Details pane and Preview pane menu options.
    3. Open Windows Explorer, click Organize, and then click Folder and search options.
    4. Click on the View tab
    5. Check the box for Always show icons, never thumbnails under Advanced settings.
    6. Close all open instances of Windows Explorer for the change to take effect.

    How to undo the workaround. To re-enable the Windows Explorer Preview and Details panes in Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2:

    1. Open Windows Explorer, click Organize, and then click Layout.
    2. Select both the Details pane and Preview pane menu options.
    3. Open Windows Explorer, click Organize, and then click Folder and search options.
    4. Click on the View tab
    5. Clear the box for Always show icons, never thumbnails under Advanced settings.
    6. Close all open instances of Windows Explorer for the change to take effect.

FAQ for OpenType Font Parsing Vulnerability - CVE-2012-2556

What is the scope of the vulnerability? 
This is a remote code execution vulnerability.

What causes the vulnerability? 
The vulnerability is caused when the OpenType Font (OTF) driver does not properly handle objects in memory.

What is the OpenType Font format? 
OpenType is a font format developed jointly by Microsoft and Adobe as an extension of Apple's TrueType font format. An OpenType font file contains data, in table format, that comprises either a TrueType or a PostScript outline font. Rasterizers use combinations of data from the tables contained in the font to render the TrueType or PostScript glyph outlines. For more information, see the Microsoft Typography OpenType FAQ.

What might an attacker use the vulnerability to do? 
An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

How could an attacker exploit the vulnerability? 
There are multiple means that could allow an attacker to exploit this vulnerability.

In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit this vulnerability and then convince a user to view the website. An attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by getting them to click a link in an email message or in an Instant Messenger message that takes users to the attacker's website, or by opening an attachment sent through email.

In a file sharing attack scenario, an attacker could provide a specially crafted document file that is designed to exploit this vulnerability, and then convince a user to open the document file.

In a local attack scenario, an attacker could also exploit this vulnerability by running a specially crafted application to take complete control over the affected system. However, the attacker must have valid logon credentials and be able to log on locally to exploit this vulnerability in this scenario.

What systems are primarily at risk from the vulnerability? 
Workstations and terminal servers are primarily at risk.

What does the update do? 
The update addresses the vulnerability by correcting the way the Windows kernel-mode driver handles objects in memory.

When this security bulletin was issued, had this vulnerability been publicly disclosed? 
Yes. This vulnerability has been publicly disclosed. It has been assigned Common Vulnerability and Exposure CVE-2012-2556.

When this security bulletin was issued, had Microsoft received any reports that this vulnerability was being exploited? 
No. Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers when this security bulletin was originally issued.

A remote code execution vulnerability exists in the way that affected components handle a specially crafted TrueType font files. The vulnerability could allow remote code execution if a user opens a specially crafted TrueType font file. An attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full administrative rights.

To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2012-4786.

Mitigating Factors for TrueType Font Parsing Vulnerability - CVE-2012-4786

Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors may be helpful in your situation:

  • In a web browsing attack scenario, an attacker could host a website that contains a webpage that is used to exploit this vulnerability. In addition, compromised websites and websites that accept or host user-provided content or advertisements could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these websites. Instead, an attacker would have to convince users to visit the website, typically by getting them to click a link in an email message or Instant Messenger message that takes users to the attacker's website.
  • By default, all supported versions of Microsoft Outlook, Microsoft Outlook Express, and Windows Mail open HTML email messages in the Restricted sites zone, which disables font download by default. If a user clicks a link in an email message, the user could still be vulnerable to exploitation of this vulnerability through the web-based attack scenario. The vulnerability could also be exploited if a user opens an attachment that is sent in an email message.
  • The malicious file could be sent as an email attachment, but the attacker would have to convince the user to open the attachment in order to exploit the vulnerability.

Workarounds for TrueType Font Parsing Vulnerability - CVE-2012-4786

Workaround refers to a setting or configuration change that does not correct the underlying vulnerability but would help block known attack vectors before you apply the update. Microsoft has tested the following workarounds and states in the discussion whether a workaround reduces functionality.

  • Disable the WebClient service

    Disabling the WebClient service helps protect affected systems from attempts to exploit this vulnerability by blocking the most likely remote attack vector through the Web Distributed Authoring and Versioning (WebDAV) client service. After applying this workaround it is still possible for remote attackers who successfully exploit this vulnerability to cause the system to run programs located on the targeted user's computer or the Local Area Network (LAN), but users will be prompted for confirmation before opening arbitrary programs from the Internet.

    To disable the WebClient Service, follow these steps:

    1. Click Start, click Run, type Services.msc and then click OK.
    2. Right-click WebClient service and select Properties.
    3. Change the Startup type to Disabled. If the service is running, click Stop.
    4. Click OK and exit the management application.

    Impact of workaround. When the WebClient service is disabled, Web Distributed Authoring and Versioning (WebDAV) requests are not transmitted. In addition, any services that explicitly depend on the Web Client service will not start, and an error message will be logged in the System log. For example, WebDAV shares will be inaccessible from the client computer.

    How to undo the workaround.

    To re-enable the WebClient Service, follow these steps:

    1. Click Start, click Run, type Services.msc and then click OK.
    2. Right-click WebClient service and select Properties.
    3. Change the Startup type to Automatic. If the service is not running, click Start.
    4. Click OK and exit the management application.
  • Block TCP ports 139 and 445 at the firewall

    These ports are used to initiate a connection with the affected component. Blocking TCP ports 139 and 445 at the firewall will help protect systems that are behind that firewall from attempts to exploit this vulnerability. Microsoft recommends that you block all unsolicited inbound communication from the Internet to help prevent attacks that may use other ports. For more information about ports, see the TechNet article, TCP and UDP Port Assignments.

    Impact of workaround. Several Windows services use the affected ports. Blocking connectivity to the ports may cause various applications or services to not function. Some of the applications or services that could be impacted are listed below:

    • Applications that use SMB (CIFS)
    • Applications that use mailslots or named pipes (RPC over SMB)
    • Server (File and Print Sharing)
    • Group Policy
    • Net Logon
    • Distributed File System (DFS)
    • Terminal Server Licensing
    • Print Spooler
    • Computer Browser
    • Remote Procedure Call Locator
    • Fax Service
    • Indexing Service
    • Performance Logs and Alerts
    • Systems Management Server
    • License Logging Service

    How to undo the workaround. Unblock TCP ports 139 and 445 at the firewall. For more information about ports, see TCP and UDP Port Assignments.

  • Disable the Preview Pane and Details Pane in Windows Explorer

    Disabling the Preview and Details panes in Windows Explorer prevents TrueType fonts from being viewed in Windows Explorer. While this prevents malicious files from being viewed in Windows Explorer, it does not prevent a local, authenticated user from running a specially crafted program to exploit this vulnerability.

    To disable these panes in Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2, perform the following steps:

    1. Open Windows Explorer, click Organize, and then click Layout.
    2. Clear both the Details pane and Preview pane menu options.
    3. Open Windows Explorer, click Organize, and then click Folder and search options.
    4. Click on the View tab
    5. Check the box for Always show icons, never thumbnails under Advanced settings.
    6. Close all open instances of Windows Explorer for the change to take effect.

    How to undo the workaround. To re-enable the Windows Explorer Preview and Details panes in Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2:

    1. Open Windows Explorer, click Organize, and then click Layout.
    2. Select both the Details pane and Preview pane menu options.
    3. Open Windows Explorer, click Organize, and then click Folder and search options.
    4. Click on the View tab
    5. Clear the box for Always show icons, never thumbnails under Advanced settings.
    6. Close all open instances of Windows Explorer for the change to take effect.

FAQ for TrueType Font Parsing Vulnerability - CVE-2012-4786

What is the scope of the vulnerability? 
This is a remote code execution vulnerability.

What causes the vulnerability? 
The vulnerability is caused when Windows fails to properly handle specially crafted TrueType Fonts (TTF) files.

What is TrueType? 
TrueType is a digital font technology used in Microsoft operating systems.

What might an attacker use the vulnerability to do? 
An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full administrative rights.

How could an attacker exploit the vulnerability? 
There are multiple means that could allow an attacker to exploit this vulnerability.

In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit this vulnerability and then convince a user to view the website. An attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by getting them to click a link in an email message or in an Instant Messenger message that takes users to the attacker's website, or by opening an attachment sent through email.

In a file sharing attack scenario, an attacker could provide a specially crafted document file that is designed to exploit this vulnerability, and then convince a user to open the document file.

In a local attack scenario, an attacker could also exploit this vulnerability by running a specially crafted application to take complete control over the affected system. However, the attacker must have valid logon credentials and be able to log on locally to exploit this vulnerability in this scenario.

What systems are primarily at risk from the vulnerability? 
Workstations and terminal servers are primarily at risk.

What does the update do? 
The update addresses the vulnerability by correcting the way Windows handles specially crafted TrueType Font (TTF) files.

When this security bulletin was issued, had this vulnerability been publicly disclosed? 
No. Microsoft received information about this vulnerability through coordinated vulnerability disclosure.

When this security bulletin was issued, had Microsoft received any reports that this vulnerability was being exploited? 
No. Microsoft had not received any information to indicate that this vulnerability had been publicly used to attack customers when this security bulletin was originally issued.

Update Information

Security Central

Manage the software and security updates you need to deploy to the servers, desktop, and mobile systems in your organization. For more information see the TechNet Update Management Center. The Microsoft TechNet Security website provides additional information about security in Microsoft products.

Security updates are available from Microsoft Update and Windows Update. Security updates are also available from the Microsoft Download Center. You can find them most easily by doing a keyword search for "security update."

Finally, security updates can be downloaded from the Microsoft Update Catalog. The Microsoft Update Catalog provides a searchable catalog of content made available through Windows Update and Microsoft Update, including security updates, drivers and service packs. By searching using the security bulletin number (such as, "MS12-001"), you can add all the applicable updates to your basket (including different languages for an update), and download to the folder of your choosing. For more information about the Microsoft Update Catalog, see the Microsoft Update Catalog FAQ.

Detection and Deployment Guidance

Microsoft provides detection and deployment guidance for security updates. This guidance contains recommendations and information that can help IT professionals understand how to use various tools for detection and deployment of security updates. For more information, see Microsoft Knowledge Base Article 961747.

Microsoft Baseline Security Analyzer

Microsoft Baseline Security Analyzer (MBSA) lets administrators scan local and remote systems for missing security updates as well as common security misconfigurations. For more information, see Microsoft Baseline Security Analyzer.

The following table provides the MBSA detection summary for this security update.

Software MBSA
Windows XP Service Pack 3Yes
Windows XP Professional x64 Edition Service Pack 2Yes
Windows Server 2003 Service Pack 2Yes
Windows Server 2003 x64 Edition Service Pack 2Yes
Windows Server 2003 with SP2 for Itanium-based SystemsYes
Windows Vista Service Pack 2Yes
Windows Vista x64 Edition Service Pack 2Yes
Windows Server 2008 for 32-bit Systems Service Pack 2Yes
Windows Server 2008 for x64-based Systems Service Pack 2Yes
Windows Server 2008 for Itanium-based Systems Service Pack 2Yes
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1Yes
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1Yes
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1Yes
Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1Yes
Windows 8 for 32-bit SystemsNo
Windows 8 for 64-bit SystemsNo
Windows RTNo
Windows Server 2012No

Note For customers using legacy software not supported by the latest release of MBSA, Microsoft Update, and Windows Server Update Services, please see Microsoft Baseline Security Analyzer and reference the Legacy Product Support section on how to create comprehensive security update detection with legacy tools.

Windows Server Update Services

Windows Server Update Services (WSUS) enables information technology administrators to deploy the latest Microsoft product updates to computers that are running the Windows operating system. For more information about how to deploy security updates using Windows Server Update Services, see the TechNet article, Windows Server Update Services.

Systems Management Server

The following table provides the SMS detection and deployment summary for this security update.

SoftwareSMS 2003 with ITMUSystem Center Configuration Manager (All Supported Versions)
Windows XP Service Pack 3YesYes
Windows XP Professional x64 Edition Service Pack 2YesYes
Windows Server 2003 Service Pack 2YesYes
Windows Server 2003 x64 Edition Service Pack 2YesYes
Windows Server 2003 with SP2 for Itanium-based SystemsYesYes
Windows Vista Service Pack 2YesYes
Windows Vista x64 Edition Service Pack 2YesYes
Windows Server 2008 for 32-bit Systems Service Pack 2YesYes
Windows Server 2008 for x64-based Systems Service Pack 2YesYes
Windows Server 2008 for Itanium-based Systems Service Pack 2YesYes
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1YesYes
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems Service Pack 1YesYes
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for x64-based Systems Service Pack 1YesYes
Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1YesYes
Windows 8 for 32-bit SystemsYesYes
Windows 8 for 64-bit SystemsYesYes
Windows RTYesYes
Windows Server 2012YesYes

Note Microsoft discontinued support for SMS 2.0 on April 12, 2011. For SMS 2003, Microsoft also discontinued support for the Security Update Inventory Tool (SUIT) on April 12, 2011. Customers are encouraged to upgrade to System Center Configuration Manager. For customers remaining on SMS 2003 Service Pack 3, the Inventory Tool for Microsoft Updates (ITMU) is also an option.

For SMS 2003, the SMS 2003 Inventory Tool for Microsoft Updates (ITMU) can be used by SMS to detect security updates that are offered by Microsoft Update and that are supported by Windows Server Update Services. For more information about the SMS 2003 ITMU, see SMS 2003 Inventory Tool for Microsoft Updates. For more information about SMS scanning tools, see SMS 2003 Software Update Scanning Tools. See also Downloads for Systems Management Server 2003.

System Center Configuration Manager uses WSUS 3.0 for detection of updates. For more information, see System Center.

For more detailed information, see Microsoft Knowledge Base Article 910723: Summary list of monthly detection and deployment guidance articles.

Update Compatibility Evaluator and Application Compatibility Toolkit

Updates often write to the same files and registry settings required for your applications to run. This can trigger incompatibilities and increase the time it takes to deploy security updates. You can streamline testing and validating Windows updates against installed applications with the Update Compatibility Evaluator components included with Application Compatibility Toolkit.

The Application Compatibility Toolkit (ACT) contains the necessary tools and documentation to evaluate and mitigate application compatibility issues before deploying Windows Vista, a Windows Update, a Microsoft Security Update, or a new version of Windows Internet Explorer in your environment.

Affected Software

For information about the specific security update for your affected software, click the appropriate link:

Windows XP (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service PacksThe update for this issue will be included in a future service pack or update rollup
Deployment 
Installing without user interventionFor Windows XP Service Pack 3:
WindowsXP-KB2753842-v2-x86-ENU.exe /quiet
WindowsXP-KB2779030-x86-ENU.exe /quiet
For Windows XP Professional x64 Edition Service Pack 2:
WindowsServer2003.WindowsXP-KB2753842-v2-x64-ENU.exe /quiet
WindowsServer2003.WindowsXP-KB2779030-x64-ENU.exe /quiet
Installing without restartingFor Windows XP Service Pack 3:
WindowsXP-KB2753842-v2-x86-ENU.exe /norestart
WindowsXP-KB2779030-x86-ENU.exe /norestart
For Windows XP Professional x64 Edition Service Pack 2:
WindowsServer2003.WindowsXP-KB2753842-v2-x64-ENU.exe /norestart
WindowsServer2003.WindowsXP-KB2779030-x64-ENU.exe /norestart
Update log fileKB2753842-v2.log
KB2779030.log
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement 
Restart required?Yes, you must restart your system after you apply this security update.
HotPatchingNot applicable
Removal InformationUse Add or Remove Programs item in Control Panel or the Spuninst.exe utility located in the following folders: %Windir%\$NTUninstallKB2753842-v2$\Spuninst
%Windir%\$NTUninstallKB2779030$\Spuninst
File InformationSee Microsoft Knowledge Base Article 2753842 and Microsoft Knowledge Base Article 2779030
Registry Key VerificationFor all supported 32-bit editions of Windows XP:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP\SP4\KB2753842-v2\Filelist
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP\SP4\KB2779030\Filelist
For all supported x64-based editions of Windows XP:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP Version 2003\SP3\KB2753842-v2\Filelist
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP Version 2003\SP3\KB2779030\Filelist

Note The update for supported versions of Windows XP Professional x64 Edition also applies to supported versions of Windows Server 2003 x64 Edition.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

If you have previously installed a hotfix to update one of these files, the installer copies the RTMQFE, SP1QFE, or SP2QFE files to your system. Otherwise, the installer copies the RTMGDR, SP1GDR, or SP2GDR files to your system. Security updates may not contain all variations of these files. For more information about this behavior, see Microsoft Knowledge Base Article 824994.

For more information about the installer, see Microsoft Knowledge Base Article 832475.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/helpDisplays the command-line options.
Setup Modes
/passiveUnattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quietQuiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestartDoes not restart when installation has completed.
/forcerestartRestarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestartDisplays a dialog box prompting the local user to allow a restart.
Special Options
/overwriteoemOverwrites OEM files without prompting.
/nobackupDoes not back up files needed for uninstall.
/forceappscloseForces other programs to close when the computer shuts down.
/log:pathAllows the redirection of installation log files.
/integrate:pathIntegrates the update into the Windows source files. These files are located at the path that is specified in the switch.
/extract[:path]Extracts files without starting the Setup program.
/EREnables extended error reporting.
/verboseEnables verbose logging. During installation, creates %Windir%\CabBuild.log. This log details the files that are copied. Using this switch may cause the installation to proceed more slowly.

Note You can combine these switches into one command. For backward compatibility, the security update also supports the setup switches that the earlier version of the Setup program uses. For more information about the supported installation switches, see Microsoft Knowledge Base Article 262841.

Removing the Update

This security update supports the following setup switches.

Supported Spuninst.exe Switches
SwitchDescription
/helpDisplays the command-line options.
Setup Modes
/passiveUnattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quietQuiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestartDoes not restart when installation has completed
/forcerestartRestarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestartDisplays a dialog box prompting the local user to allow a restart.
Special Options
/forceappscloseForces other programs to close when the computer shuts down.
/log:pathAllows the redirection of installation log files.

Verifying That the Update Has Been Applied

  • Microsoft Baseline Security Analyzer

    To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.

  • File Version Verification

    Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.

    1. Click Start, and then click Search.
    2. In the Search Results pane, click All files and folders under Search Companion.
    3. In the All or part of the file name box, type a file name from the appropriate file information table, and then click Search.
    4. In the list of files, right-click a file name from the appropriate file information table, and then click Properties.

      Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
    5. On the Version tab, determine the version of the file that is installed on your system by comparing it to the version that is documented in the appropriate file information table.

      Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
  • Registry Key Verification

    You may also be able to verify the files that this security update has installed by reviewing the registry keys listed in the Reference Table in this section.

    These registry keys may not contain a complete list of installed files. Also, these registry keys may not be created correctly when an administrator or an OEM integrates or slipstreams this security update into the Windows installation source files.

Windows Server 2003 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service PacksThe update for this issue will be included in a future service pack or update rollup
Deployment
Installing without user interventionFor all supported 32-bit editions of Windows Server 2003:
WindowsServer2003-KB2753842-v2-x86-ENU.exe /quiet
WindowsServer2003-KB2779030-x86-ENU.exe /quiet
 For all supported x64-based editions of Windows Server 2003:
WindowsServer2003.WindowsXP-KB2753842-v2-x64-ENU.exe /quiet
WindowsServer2003.WindowsXP-KB2779030-x64-ENU.exe /quiet
For all supported Itanium-based editions of Windows Server 2003:
WindowsServer2003-KB2753842-v2-ia64-ENU.exe /quiet
WindowsServer2003-KB2779030-ia64-ENU.exe /quiet
Installing without restartingFor all supported 32-bit editions of Windows Server 2003:
WindowsServer2003-KB2753842-v2-x86-ENU.exe /norestart
WindowsServer2003-KB2779030-x86-ENU.exe /norestart
 For all supported x64-based editions of Windows Server 2003:
WindowsServer2003.WindowsXP-KB2753842-v2-x64-ENU.exe /norestart
WindowsServer2003.WindowsXP-KB2779030-x64-ENU.exe /norestart
For all supported Itanium-based editions of Windows Server 2003:
WindowsServer2003-KB2753842-v2-ia64-ENU.exe /norestart
WindowsServer2003-KB2779030-ia64-ENU.exe /norestart
Update log fileKB2753842-v2.log
KB2779030.log
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement 
Restart required?Yes, you must restart your system after you apply this security update.
HotPatchingThis security update does not support HotPatching. For more information about HotPatching, see Microsoft Knowledge Base Article 897341.
Removal InformationUse Add or Remove Programs item in Control Panel or the Spuninst.exe utility located in the following folders: %Windir%\$NTUninstallKB2753842-v2$\Spuninst
%Windir%\$NTUninstallKB2779030$\Spuninst
File InformationSee Microsoft Knowledge Base Article 2753842 and Microsoft Knowledge Base Article 2779030
Registry Key VerificationHKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Server 2003\SP3\KB2753842-v2\Filelist
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Server 2003\SP3\KB2779030\Filelist

Note The update for supported versions of Windows Server 2003 x64 Edition also applies to supported versions of Windows XP Professional x64 Edition.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

If you have previously installed a hotfix to update one of these files, the installer copies the RTMQFE, SP1QFE, or SP2QFE files to your system. Otherwise, the installer copies the RTMGDR, SP1GDR, or SP2GDR files to your system. Security updates may not contain all variations of these files. For more information about this behavior, see Microsoft Knowledge Base Article 824994.

For more information about the installer, see Microsoft Knowledge Base Article 832475.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/helpDisplays the command-line options.
Setup Modes
/passiveUnattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quietQuiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestartDoes not restart when installation has completed.
/forcerestartRestarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestartDisplays a dialog box prompting the local user to allow a restart.
Special Options
/overwriteoemOverwrites OEM files without prompting.
/nobackupDoes not back up files needed for uninstall.
/forceappscloseForces other programs to close when the computer shuts down.
/log:pathAllows the redirection of installation log files.
/integrate:pathIntegrates the update into the Windows source files. These files are located at the path that is specified in the switch.
/extract[:path]Extracts files without starting the Setup program.
/EREnables extended error reporting.
/verboseEnables verbose logging. During installation, creates %Windir%\CabBuild.log. This log details the files that are copied. Using this switch may cause the installation to proceed more slowly.

Note You can combine these switches into one command. For backward compatibility, the security update also supports many of the setup switches that the earlier version of the Setup program uses. For more information about the supported installation switches, see Microsoft Knowledge Base Article 262841.

Removing the Update

This security update supports the following setup switches.

Supported Spuninst.exe Switches
SwitchDescription
/helpDisplays the command-line options.
Setup Modes
/passiveUnattended Setup mode. No user interaction is required, but installation status is displayed. If a restart is required at the end of Setup, a dialog box will be presented to the user with a timer warning that the computer will restart in 30 seconds.
/quietQuiet mode. This is the same as unattended mode, but no status or error messages are displayed.
Restart Options
/norestartDoes not restart when installation has completed.
/forcerestartRestarts the computer after installation and force other applications to close at shutdown without saving open files first.
/warnrestart[:x]Presents a dialog box with a timer warning the user that the computer will restart in x seconds. (The default setting is 30 seconds.) Intended for use with the /quiet switch or the /passive switch.
/promptrestartDisplays a dialog box prompting the local user to allow a restart.
Special Options
/forceappscloseForces other programs to close when the computer shuts down.
/log:pathAllows the redirection of installation log files.

Verifying that the Update Has Been Applied

  • Microsoft Baseline Security Analyzer

    To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.

  • File Version Verification

    Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.

    1. Click Start, and then click Search.
    2. In the Search Results pane, click All files and folders under Search Companion.
    3. In the All or part of the file name box, type a file name from the appropriate file information table, and then click Search.
    4. In the list of files, right-click a file name from the appropriate file information table, and then click Properties.

      Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
    5. On the Version tab, determine the version of the file that is installed on your system by comparing it to the version that is documented in the appropriate file information table.

      Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
  • Registry Key Verification

    You may also be able to verify the files that this security update has installed by reviewing the registry keys listed in the Reference Table in this section.

    These registry keys may not contain a complete list of installed files. Also, these registry keys may not be created correctly when an administrator or an OEM integrates or slipstreams this security update into the Windows installation source files.

Windows Vista (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service PacksThe update for this issue will be included in a future service pack or update rollup
Deployment 
Installing without user interventionFor all supported 32-bit editions of Windows Vista:
Windows6.0-KB2753842-v2-x86.msu /quiet
Windows6.0-KB2779030-x86.msu /quiet
For all supported x64-based editions of Windows Vista:
Windows6.0-KB2753842-v2-x64.msu /quiet
Windows6.0-KB2779030-x64.msu /quiet
Installing without restartingFor all supported 32-bit editions of Windows Vista:
Windows6.0-KB2753842-v2-x86.msu /quiet /norestart
Windows6.0-KB2779030-x86.msu /quiet /norestart
For all supported x64-based editions of Windows Vista:
Windows6.0-KB2753842-v2-x64.msu /quiet /norestart
Windows6.0-KB2779030-x64.msu /quiet /norestart
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement 
Restart required?Yes, you must restart your system after you apply this security update.
HotPatchingNot applicable.
Removal InformationWUSA.exe does not support uninstall of updates. To uninstall an update installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates and select from the list of updates.
File InformationSee Microsoft Knowledge Base Article 2753842 and Microsoft Knowledge Base Article 2779030
Registry Key VerificationNote A registry key does not exist to validate the presence of this update.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/?, /h, /helpDisplays help on supported switches.
/quietSuppresses the display of status or error messages.
/norestartWhen combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.

Note For more information about the wusa.exe installer, see Microsoft Knowledge Base Article 934307.

Verifying That the Update Has Been Applied

  • Microsoft Baseline Security Analyzer

    To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.

  • File Version Verification

    Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.

    1. Click Start and then enter an update file name in the Start Search box.
    2. When the file appears under Programs, right-click the file name and click Properties.
    3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.

      Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
    4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.

      Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
    5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows Server 2008 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service PacksThe update for this issue will be included in a future service pack or update rollup
Deployment 
Installing without user interventionFor all supported 32-bit editions of Windows Server 2008:
Windows6.0-KB2753842-v2-x86.msu /quiet
Windows6.0-KB2779030-x86.msu /quiet
For all supported x64-based editions of Windows Server 2008:
Windows6.0-KB2753842-v2-x64.msu /quiet
Windows6.0-KB2779030-x64.msu /quiet
For all supported Itanium-based editions of Windows Server 2008:
Windows6.0-KB2753842-v2-ia64.msu /quiet
Windows6.0-KB2779030-ia64.msu /quiet
Installing without restartingFor all supported 32-bit editions of Windows Server 2008:
Windows6.0-KB2753842-v2-x86.msu /quiet /norestart
Windows6.0-KB2779030-x86.msu /quiet /norestart
For all supported x64-based editions of Windows Server 2008:
Windows6.0-KB2753842-v2-x64.msu /quiet /norestart
Windows6.0-KB2779030-x64.msu /quiet /norestart
For all supported Itanium-based editions of Windows Server 2008:
Windows6.0-KB2753842-v2-ia64.msu /quiet /norestart
Windows6.0-KB2779030-ia64.msu /quiet /norestart
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement 
Restart required?Yes, you must restart your system after you apply this security update.
HotPatchingNot applicable.
Removal InformationWUSA.exe does not support uninstall of updates. To uninstall an update installed by WUSA, click Control Panel, and then click Security. Under Windows Update, click View installed updates and select from the list of updates.
File InformationSee Microsoft Knowledge Base Article 2753842 and Microsoft Knowledge Base Article 2779030
Registry Key VerificationNote A registry key does not exist to validate the presence of this update.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/?, /h, /helpDisplays help on supported switches.
/quietSuppresses the display of status or error messages.
/norestartWhen combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.

Note For more information about the wusa.exe installer, see Microsoft Knowledge Base Article 934307.

Verifying That the Update Has Been Applied

  • Microsoft Baseline Security Analyzer

    To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.

  • File Version Verification

    Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.

    1. Click Start and then enter an update file name in the Start Search box.
    2. When the file appears under Programs, right-click the file name and click Properties.
    3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.

      Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
    4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.

      Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
    5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows 7 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service PacksThe update for this issue will be included in a future service pack or update rollup
Deployment 
Installing without user interventionFor all supported 32-bit editions of Windows 7:
Windows6.1-KB2753842-v2-x86.msu /quiet
Windows6.1-KB2779030-x86.msu /quiet
For all supported x64-based editions of Windows 7:
Windows6.1-KB2753842-v2-x64.msu /quiet
Windows6.1-KB2779030-x64.msu /quiet
Installing without restartingFor all supported 32-bit editions of Windows 7:
Windows6.1-KB2753842-v2-x86.msu /quiet /norestart
Windows6.1-KB2779030-x86.msu /quiet /norestart
For all supported x64-based editions of Windows 7:
Windows6.1-KB2753842-v2-x64.msu /quiet /norestart
Windows6.1-KB2779030-x64.msu /quiet /norestart
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement 
Restart required?Yes, you must restart your system after you apply this security update.
HotPatchingNot applicable.
Removal InformationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates and select from the list of updates.
File InformationSee Microsoft Knowledge Base Article 2753842 and Microsoft Knowledge Base Article 2779030
Registry Key VerificationNote A registry key does not exist to validate the presence of this update.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/?, /h, /helpDisplays help on supported switches.
/quietSuppresses the display of status or error messages.
/norestartWhen combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.
/warnrestart:<seconds>When combined with /quiet, the installer will warn the user before initiating restart.
/promptrestartWhen combined with /quiet, the installer will prompt before initiating restart.
/forcerestartWhen combined with /quiet, the installer will forcefully close applications and initiate restart.
/log:<file name>Enables logging to specified file.
/extract:<destination>Extracts the package contents to the destination folder.
/uninstall /kb:<KB Number>Uninstalls the security update.

Note For more information about the wusa.exe installer, see "Windows Update Stand-alone Installer" in the TechNet article, Miscellaneous Changes in Windows 7.

Verifying That the Update Has Been Applied

  • Microsoft Baseline Security Analyzer

    To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.

  • File Version Verification

    Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.

    1. Click Start and then enter an update file name in the Search box.
    2. When the file appears under Programs, right-click the file name and click Properties.
    3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.

      Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
    4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.

      Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
    5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows Server 2008 R2 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service PacksThe update for this issue will be included in a future service pack or update rollup
Deployment 
Installing without user interventionFor all supported x64-based editions of Windows Server 2008 R2:
Windows6.1-KB2753842-v2-x64.msu /quiet
Windows6.1-KB2779030-x64.msu /quiet
For all supported Itanium-based editions of Windows Server 2008 R2:
Windows6.1-KB2753842-v2-ia64.msu /quiet
Windows6.1-KB2779030-ia64.msu /quiet
Installing without restartingFor all supported x64-based editions of Windows Server 2008 R2:
Windows6.1-KB2753842-v2-x64.msu /quiet /norestart
Windows6.1-KB2779030-x64.msu /quiet /norestart
For all supported Itanium-based editions of Windows Server 2008 R2:
Windows6.1-KB2753842-v2-ia64.msu /quiet /norestart
Windows6.1-KB2779030-ia64.msu /quiet /norestart
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement 
Restart required?Yes, you must restart your system after you apply this security update.
HotPatchingNot applicable.
Removal InformationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, and then under Windows Update, click View installed updates and select from the list of updates.
File InformationSee Microsoft Knowledge Base Article 2753842 and Microsoft Knowledge Base Article 2779030
Registry Key VerificationNote A registry key does not exist to validate the presence of this update.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/?, /h, /helpDisplays help on supported switches.
/quietSuppresses the display of status or error messages.
/norestartWhen combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.
/warnrestart:<seconds>When combined with /quiet, the installer will warn the user before initiating restart.
/promptrestartWhen combined with /quiet, the installer will prompt before initiating restart.
/forcerestartWhen combined with /quiet, the installer will forcefully close applications and initiate restart.
/log:<file name>Enables logging to specified file.
/extract:<destination>Extracts the package contents to the destination folder.
/uninstall /kb:<KB Number>Uninstalls the security update.

Note For more information about the wusa.exe installer, see "Windows Update Stand-alone Installer" in the TechNet article, Miscellaneous Changes in Windows 7.

Verifying That the Update Has Been Applied

  • Microsoft Baseline Security Analyzer

    To verify that a security update has been applied to an affected system, you may be able to use the Microsoft Baseline Security Analyzer (MBSA) tool. See the section, Detection and Deployment Tools and Guidance, earlier in this bulletin for more information.

  • File Version Verification

    Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.

    1. Click Start and then enter an update file name in the Start Search box.
    2. When the file appears under Programs, right-click the file name and click Properties.
    3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.

      Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
    4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.

      Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
    5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows 8 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service PacksThe update for this issue will be included in a future service pack or update rollup
Deployment 
Installing without user interventionFor all supported 32-bit editions of Windows 8:
Windows8-RT-KB2753842-v2-x86.msu /quiet
Windows8-RT-KB2779030-x86.msu /quiet
For all supported x64-based editions of Windows 8:
Windows8-RT-KB2753842-v2-x64.msu /quiet
Windows8-RT-KB2779030-x64.msu /quiet
Installing without restartingFor all supported 32-bit editions of Windows 8:
Windows8-RT-KB2753842-v2-x86.msu /quiet /norestart
Windows8-RT-KB2779030-x86.msu /quiet /norestart
For all supported x64-based editions of Windows 8:
Windows8-RT-KB2753842-v2-x64.msu /quiet /norestart
Windows8-RT-KB2779030-x64.msu /quiet /norestart
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement 
Restart required?Yes, you must restart your system after you apply this security update.
HotPatchingNot applicable.
Removal InformationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, then click Installed updates and select from the list of updates.
File InformationSee Microsoft Knowledge Base Article 2753842 and Microsoft Knowledge Base Article 2779030
Registry Key VerificationNote A registry key does not exist to validate the presence of this update.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/?, /h, /helpDisplays help on supported switches.
/quietSuppresses the display of status or error messages.
/norestartWhen combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.
/warnrestart:<seconds>When combined with /quiet, the installer will warn the user before initiating restart.
/promptrestartWhen combined with /quiet, the installer will prompt before initiating restart.
/forcerestartWhen combined with /quiet, the installer will forcefully close applications and initiate restart.
/log:<file name>Enables logging to specified file.
/extract:<destination>Extracts the package contents to the destination folder.
/uninstall /kb:<KB Number>Uninstalls the security update.

Note For more information about the wusa.exe installer, see "Windows Update Stand-alone Installer" in the TechNet article, Miscellaneous Changes in Windows 7.

Verifying That the Update Has Been Applied

  • File Version Verification

    Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.

    1. Click Start and then enter an update file name in the Search box.
    2. When the file appears under Programs, right-click the file name and click Properties.
    3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.

      Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
    4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.

      Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
    5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows Server 2012 (all editions)

Reference Table

The following table contains the security update information for this software. You can find additional information in the subsection, Deployment Information, in this section.

Inclusion in Future Service PacksThe update for this issue will be included in a future service pack or update rollup
Deployment 
Installing without user interventionFor all supported editions of Windows Server 2012:
Windows8-RT-KB2753842-v2-x64.msu /quiet
Windows8-RT-KB2779030-x64.msu /quiet
Installing without restartingFor all supported editions of Windows Server 2012:
Windows8-RT-KB2753842-v2-x64.msu /quiet /norestart
Windows8-RT-KB2779030-x64.msu /quiet /norestart
Further informationSee the subsection, Detection and Deployment Tools and Guidance
Restart Requirement 
Restart required?Yes, you must restart your system after you apply this security update.
HotPatchingNot applicable.
Removal InformationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, then click Installed updates and select from the list of updates.
File InformationSee Microsoft Knowledge Base Article 2753842 and Microsoft Knowledge Base Article 2779030
Registry Key VerificationNote A registry key does not exist to validate the presence of this update.

Deployment Information

Installing the Update

When you install this security update, the installer checks whether one or more of the files that are being updated on your system have previously been updated by a Microsoft hotfix.

For more information about the terminology that appears in this bulletin, such as hotfix, see Microsoft Knowledge Base Article 824684.

This security update supports the following setup switches.

Supported Security Update Installation Switches
SwitchDescription
/?, /h, /helpDisplays help on supported switches.
/quietSuppresses the display of status or error messages.
/norestartWhen combined with /quiet, the system will not be restarted after installation even if a restart is required to complete installation.
/warnrestart:<seconds>When combined with /quiet, the installer will warn the user before initiating restart.
/promptrestartWhen combined with /quiet, the installer will prompt before initiating restart.
/forcerestartWhen combined with /quiet, the installer will forcefully close applications and initiate restart.
/log:<file name>Enables logging to specified file.
/extract:<destination>Extracts the package contents to the destination folder.
/uninstall /kb:<KB Number>Uninstalls the security update.

Note For more information about the wusa.exe installer, see "Windows Update Stand-alone Installer" in the TechNet article, Miscellaneous Changes in Windows 7.

Verifying That the Update Has Been Applied

  • File Version Verification

    Because there are several editions of Microsoft Windows, the following steps may be different on your system. If they are, see your product documentation to complete these steps.

    1. Click Start and then enter an update file name in the Start Search box.
    2. When the file appears under Programs, right-click the file name and click Properties.
    3. On the General tab, compare the file size with the file information tables provided in the bulletin KB article.

      Note Depending on the edition of the operating system, or the programs that are installed on your system, some files that are listed in the file information table may not be installed.
    4. You can also click the Details tab and compare information, such as file version and date modified, with the file information tables provided in the bulletin KB article.

      Note Attributes other than the file version may change during installation. Comparing other file attributes to the information in the file information table is not a supported method of verifying that the update has been applied. Also, in certain cases, files may be renamed during installation. If the file or version information is not present, use one of the other available methods to verify update installation.
    5. Finally, you can also click the Previous Versions tab and compare file information for the previous version of the file with the file information for the new, or updated, version of the file.

Windows RT (all editions)

The following table contains the security update information for this software.

Inclusion in Future Service PacksThe update for this issue will be included in a future service pack or update rollup.
Deployment 
This update is available via Windows Update only.
Restart Requirement 
Restart required?Yes, you must restart your system after you apply this security update.
Removal InformationClick Control Panel, click System and Security, and then under Windows Update, click Installed updates and select from the list of updates.
File InformationSee Microsoft Knowledge Base Article 2753842 and Microsoft Knowledge Base Article 2779030

Other Information

Acknowledgments

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

  • Eetu Luodemaa and Joni Vähämäki of Documill, working with the Chromium Security Rewards Program, for reporting the Windows Font Parsing Vulnerability (CVE-2012-2556)

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 (December 11, 2012): Bulletin published.
  • V1.1 (December 14, 2012): Added a link to Microsoft Knowledge Base Article 2783534 under Known Issues in the Executive Summary.
  • V2.0 (December 20, 2012): Rereleased update KB2753842 to resolve an issue with OpenType fonts not properly rendering after the original update was installed. Customers who have successfully installed the original KB2753842 update need to install the rereleased update.

Built at 2014-04-16T02:39:51Z-07:00

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