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Microsoft Security Bulletin MS13-012 - Critical

Vulnerabilities in Microsoft Exchange Server Could Allow Remote Code Execution

Published: February 12, 2013 | Updated: February 13, 2013

Version: 1.1

General Information

Executive Summary

This security update resolves publicly disclosed vulnerabilities in Microsoft Exchange Server. The most severe vulnerability is in Microsoft Exchange Server WebReady Document Viewing, and could allow remote code execution in the security context of the transcoding service on the Exchange server if a user previews a specially crafted file using Outlook Web App (OWA). The transcoding service in Exchange that is used for WebReady Document Viewing is running in the LocalService account. The LocalService account has minimum privileges on the local computer and presents anonymous credentials on the network.

This security update is rated Critical for all supported editions of Microsoft Exchange Server 2007 and Microsoft Exchange Server 2010. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerabilities by updating the affected Oracle Outside In libraries to a non-vulnerable version. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerabilities entry under the next section, Vulnerability Information.

Recommendation. Customers can configure automatic updating to check online for updates from Microsoft Update by using the Microsoft Update service. Customers who have automatic updating enabled and configured to check online for updates from Microsoft Update typically 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 from Microsoft Update and install this update manually. For information about specific configuration options in automatic updating in supported editions of Windows XP and Windows Server 2003, see Microsoft Knowledge Base Article 294871. For information about automatic updating in supported editions of Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2, see Understanding Windows automatic updating.

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

SoftwareMaximum Security ImpactAggregate Severity RatingUpdates Replaced
Microsoft Server Software
Microsoft Exchange Server 2007 Service Pack 3 
(KB2788321)
Remote Code ExecutionCriticalKB2746157 in MS12-080
Microsoft Exchange Server 2010 Service Pack 2 
(KB2746164)
Remote Code ExecutionCriticalKB2785908 in MS12-080

Non-Affected Software 

Microsoft Server Software
Microsoft Exchange Server 2003 Service Pack 2 
Microsoft Exchange Server 2010 Service Pack 3 
Microsoft Exchange Server 2013 RTM

There are multiple vulnerabilities discussed in the Oracle Critical Patch Update Advisory - January 2013. How are the vulnerabilities addressed by this update? 
CVE-2013-0393 and CVE-2013-0418 discussed in the Oracle Critical Patch Update Advisory - January 2013 affect Microsoft Exchange Server and are addressed by this update.

Does this update contain any non-security related changes to functionality? 
Yes. In addition to the changes that are listed in the Vulnerability Information section of this bulletin, this update includes other functionality changes as described in the associated KB articles for each update rollup.

These are vulnerabilities in third-party code, Oracle Outside In libraries. Why is Microsoft issuing a security update? 
Microsoft licenses a custom implementation of the Oracle Outside In libraries, specific to the product in which the third-party code is used. Microsoft is issuing this security update to help ensure that all customers using this third-party code in Microsoft Exchange are protected from these vulnerabilities.

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 2809279.

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 February bulletin summary. For more information, see Microsoft Exploitability Index.

Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected SoftwareOracle Outside In Contains Multiple Exploitable Vulnerabilities:
CVE-2013-0393
Oracle Outside In Contains Multiple Exploitable Vulnerabilities:
CVE-2013-0418
Aggregate Severity Rating
Microsoft Exchange Server 2007 Service Pack 3 Important 
Denial of Service
Critical 
Remote Code Execution
Critical
Microsoft Exchange Server 2010 Service Pack 2 Important 
Denial of Service
Critical 
Remote Code Execution
Critical

Two vulnerabilities exist in Microsoft Exchange Server through the WebReady Document Viewing feature. The more severe vulnerability, CVE-2013-0418, could allow remote code execution as the LocalService account if a user views a specially crafted file through Outlook Web Access in a browser. An attacker who successfully exploited this vulnerability could run code on the affected Exchange Server, but only as the LocalService account. The LocalService account has minimum privileges on the local computer and presents anonymous credentials on the network. The other vulnerability, CVE-2013-0393, could cause the affected Exchange Server to become unresponsive if a user views a specially crafted file through Outlook Web Access in a browser. Note that CVE-2013-0393 would not allow an attacker to execute code or to elevate user rights.

To view these vulnerabilities as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2013-0418 and CVE-2013-0393.

Mitigating Factors for Oracle Outside In Contains Multiple Exploitable Vulnerabilities

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:

  • The transcoding service in Exchange that is used for WebReady Document Viewing is running in the LocalService account. The LocalService account has minimum privileges on the local computer and presents anonymous credentials on the network. This is a mitigating factor for CVE-2013-0418.

Workarounds for Oracle Outside In Contains Multiple Exploitable Vulnerabilities

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 WebReady document view
    1. Log in to the Exchange Management Shell as an Exchange Organization Administrator.
    2. Issue the following PowerShell command:

      Get-OwaVirtualDirectory | where {$_.OwaVersion -eq 'Exchange2007' -or $_.OwaVersion -eq 'Exchange2010'} | Set-OwaVirtualDirectory -WebReadyDocumentViewingOnPublicComputersEnabled:$False -WebReadyDocumentViewingOnPrivateComputersEnabled:$False

    Impact of workaround. OWA users may not be able to preview the content of email attachments.

    How do I undo the workaround?

    1. Log in to the Exchange Management Shell as an Exchange Organization Administrator.
    2. Issue the following PowerShell command:

      Get-OwaVirtualDirectory | where {$_.OwaVersion -eq 'Exchange2007' -or $_.OwaVersion -eq 'Exchange2010'} | Set-OwaVirtualDirectory -WebReadyDocumentViewingOnPublicComputersEnabled:$True -WebReadyDocumentViewingOnPrivateComputersEnabled:$True

      Note The above steps assume the Exchange Administrator had previously allowed WebReady Documents to be viewed on both Public and Private logons to OWA. The appropriate $True or $False value should be used to set the desired behavior based upon user logon.

FAQ for Oracle Outside In Contains Multiple Exploitable Vulnerabilities

What is the scope of the vulnerabilities? 
Two vulnerabilities exist in Microsoft Exchange Server through the WebReady Document Viewing feature. The more severe vulnerability, CVE-2013-0418, is a remote code execution vulnerability. The other vulnerability, CVE-2013-0393, is a denial of service vulnerability.

What causes the vulnerabilities? 
The WebReady service parses files using the Oracle Outside In libraries in order to provide a preview of the document in the browser. The vulnerabilities are caused when WebReady Document Viewer is used to preview a specially crafted file.

The mapping of CVE identifiers to the vulnerable file parsers are as follows:

CVE IdentifierAffected File Parser
CVE-2013-0418Paradox DB
CVE-2013-0393Paradox DB

Microsoft Exchange Server does not list Paradox database as a supported file type for rendering in OWA. Do I still need to apply this update? 
Yes. An attacker could send an email message that includes a Paradox Database as an embedded attachment in a file type supported by Exchange.

What are the Oracle Outside In libraries? 
In Microsoft Exchange Server 2007 and Microsoft Exchange Server 2010, Outlook Web App (OWA) users are provided with a feature called WebReady Document Viewing that allows users to view certain attachments as a webpage instead of relying on local applications to open/view it. The Oracle Outside In libraries are used by the conversion process in the server backend to support the WebReady feature. Microsoft licenses these libraries from Oracle.

What is WebReady Document Viewing? 
WebReady Document Viewing allows users to view certain attachments as a webpage. Microsoft Exchange 2007 and Microsoft Exchange 2010 do the conversion, so the user doesn't need anything other than a web browser.

What might an attacker use these vulnerabilities to do? 
An attacker who successfully exploited CVE-2013-0418 could run arbitrary code as LocalService on the affected Exchange server. An attacker could then install programs; view, change, or delete data; or take any other action that the server process has access to do. The LocalService account has minimum privileges on the local computer and presents anonymous credentials on the network.

An attacker who successfully exploited CVE-2013-0393 could cause the affected Exchange Server to become unresponsive if a user views a specially crafted file through Outlook Web Access in a browser. Note that CVE-2013-0393 would not allow an attacker to execute code or to elevate user rights.

How could an attacker exploit these vulnerabilities? 
An attacker could send an email message containing a specially crafted file to a user on an affected version of Exchange. The vulnerabilities could be exploited when the user previews the specially crafted file in the browser.

What systems are primarily at risk from the vulnerabilities? 
Exchange server systems are primarily at risk from these vulnerabilities.

What does the update do? 
The update addresses the vulnerabilities by updating the affected Oracle Outside In libraries to a non-vulnerable version.

When this security bulletin was issued, had these vulnerabilities been publicly disclosed? 
Yes. These vulnerabilities have been publicly disclosed. They have been assigned the following Common Vulnerability and Exposure numbers:

When this security bulletin was issued, had Microsoft received any reports that these vulnerabilities were being exploited? 
No. Microsoft had not received any information to indicate that these vulnerabilities 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."

For customers of Microsoft Office for Mac, Microsoft AutoUpdate for Mac can help keep your Microsoft software up to date. For more information about using Microsoft AutoUpdate for Mac, see Check for software updates automatically.

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
Microsoft Exchange Server 2007 Service Pack 3 Yes
Microsoft Exchange Server 2010 Service Pack 2 Yes

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)
Microsoft Exchange Server 2007 Service Pack 3 YesYes
Microsoft Exchange Server 2010 Service Pack 2 YesYes

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:

Microsoft Exchange Server 2007 Service Pack 3

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 supported editions of Microsoft Exchange Server 2007:
Exchange2007-KB2788321-x64-en.msp /quiet
Installing without restartingFor supported editions of Microsoft Exchange Server 2007:
Exchange2007-KB2788321-x64-en.msp /norestart
Update log fileKB2788321.log
Further informationFor detection and deployment, see the earlier section, Detection and Deployment Tools and Guidance.
Restart Requirement
Restart required?No, this update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.

To help reduce the chance that a restart will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart, see Microsoft Knowledge Base Article 887012.
HotPatchingNot applicable
Removal InformationUse Add or Remove Programs tool in Control Panel.
File InformationSee Microsoft Knowledge Base Article 2809279
Registry Key VerificationFor Microsoft Exchange Server 2007 Service Pack 2 for x64-based Systems:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Exchange 2007\SP2\KB2788321

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 Exchange 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
/helpDisplays the command-line options.
Setup Modes
/q[n|b|r|f] or /quietSets user interface level.
n - No user interaction
b - Basic user interaction
r - Reduced user interaction
f - Full user interaction (default)
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.
/promptrestartDisplays a dialog box prompting the local user to allow a restart.
Logging Options
/l[i|w|e|a|r|u|c|m|o|p|v|x|+|!|*] <LogFile>i - Status messages
w - Nonfatal warnings
e - All error messages
a - Start up of actions
r - Action-specific records
u - User requests
c - Initial UI parameters
m - Out-of-memory or fatal exit information
o - Out-of-disk-space messages
p - Terminal properties
v - Verbose output
x - Extra debugging information
+ - Append to existing log file
! - Flush each line to the log
* - Log all information, except for v and x options
/log<LogFile>Equivalent of /l* <LogFile>

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.

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.
  • 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.

Microsoft Exchange Server 2010 Service Pack 2

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 Microsoft Exchange Server 2010 Service Pack 2:
Exchange2010-KB2746164-x64-EN.msp /quiet
Installing without restartingFor Microsoft Exchange Server 2010 Service Pack 2:
Exchange2010-KB2746164-x64-EN.msp /norestart
Update log fileKB2746164.log
Further informationFor detection and deployment, see the earlier section, Detection and Deployment Tools and Guidance.
Restart Requirement
Restart required?No, this update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, a message appears that advises you to restart.

To help reduce the chance that a restart will be required, stop all affected services and close all applications that may use the affected files prior to installing the security update. For more information about the reasons why you may be prompted to restart, see Microsoft Knowledge Base Article 887012.
HotPatchingNot applicable
Removal InformationUse Add or Remove Programs tool in Control Panel.
File InformationSee Microsoft Knowledge Base Article 2809279
Registry Key VerificationFor supported editions of Microsoft Exchange Server 2010:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Exchange 2010\SP1\KB2746164

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 Exchange 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
/helpDisplays the command-line options.
Setup Modes
/q[n|b|r|f] or /quietSets user interface level.
n - No user interaction
b - Basic user interaction
r - Reduced user interaction
f - Full user interaction (default)
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.
/promptrestartDisplays a dialog box prompting the local user to allow a restart.
Logging Options
/l[i|w|e|a|r|u|c|m|o|p|v|x|+|!|*] <LogFile>i - Status messages
w - Nonfatal warnings
e - All error messages
a - Start up of actions
r - Action-specific records
u - User requests
c - Initial UI parameters
m - Out-of-memory or fatal exit information
o - Out-of-disk-space messages
p - Terminal properties
v - Verbose output
x - Extra debugging information
+ - Append to existing log file
! - Flush each line to the log
* - Log all information, except for v and x options
/log<LogFile>Equivalent of /l* <LogFile>

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.

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.
  • 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.

Other Information

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 (February 12, 2013): Bulletin published.
  • V1.1 (February 13, 2013): Clarified that Microsoft Exchange Server 2010 Service Pack 3 is not affected by the vulnerabilities described in this bulletin. This is an informational change only.

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

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