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Microsoft Security Bulletin MS13-049 - Important

Vulnerability in Kernel-Mode Driver Could Allow Denial of Service

Published: June 11, 2013

Version: 1.0

General Information

Executive Summary

This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow denial of service if an attacker sends specially crafted packets to the server. Firewall best practices and standard default firewall configurations can help protect networks from attacks that originate outside the enterprise perimeter.

This security update is rated Important for all supported editions of Windows 8, Windows Server 2012, and Windows RT, and Moderate for all supported editions of Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerability by correcting the way that the Windows TCP/IP driver handles specially crafted packets. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

Recommendation. Most 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 at the earliest opportunity 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.

Knowledge Base Article

Knowledge Base Article2845690
File informationYes
SHA1/SHA2 hashesYes
Known issuesYes

Affected and Non-Affected Software

The following software has 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 Vista
Windows Vista Service Pack 2
(2845690)
Denial of ServiceModerate 2790655 in MS13-018
Windows Vista x64 Edition Service Pack 2
(2845690)
Denial of ServiceModerate 2790655 in MS13-018
Windows Server 2008
Windows Server 2008 for 32-bit Systems Service Pack 2
(2845690)
Denial of ServiceModerate 2790655 in MS13-018
Windows Server 2008 for x64-based Systems Service Pack 2
(2845690)
Denial of ServiceModerate 2790655 in MS13-018
Windows Server 2008 for Itanium-based Systems Service Pack 2
(2845690)
Denial of ServiceModerate 2790655 in MS13-018
Windows 7
Windows 7 for 32-bit Systems Service Pack 1
(2845690)
Denial of ServiceModerate 2790655 in MS13-018
Windows 7 for x64-based Systems Service Pack 1
(2845690)
Denial of ServiceModerate 2790655 in MS13-018
Windows Server 2008 R2
Windows Server 2008 R2 for x64-based Systems Service Pack 1
(2845690)
Denial of ServiceModerate 2790655 in MS13-018
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
(2845690)
Denial of ServiceModerate 2790655 in MS13-018
Windows 8
Windows 8 for 32-bit Systems
(2845690)
Denial of ServiceImportant 2790655 in MS13-018
Windows 8 for 64-bit Systems
(2845690)
Denial of ServiceImportant 2790655 in MS13-018
Windows Server 2012
Windows Server 2012
(2845690)
Denial of ServiceImportant 2790655 in MS13-018
Windows RT
Windows RT[1]
(2845690)
Denial of ServiceImportant 2790655 in MS13-018
Server Core installation option
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
(2845690)
Denial of ServiceModerate 2790655 in MS13-018
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
(2845690)
Denial of ServiceModerate 2790655 in MS13-018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
(2845690)
Denial of ServiceModerate 2790655 in MS13-018
Windows Server 2012 (Server Core installation)
(2845690)
Denial of ServiceImportant 2790655 in MS13-018

[1]This update is available via Windows Update.

Non-Affected Software

Operating System
Windows XP Service Pack 3
Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP2 for Itanium-based Systems

 

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 has 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 June bulletin summary. For more information, see Microsoft Exploitability Index.

Vulnerability Severity Rating and Maximum Security Impact by Affected Software
Affected SoftwareTCP/IP Integer Overflow Vulnerability - CVE-2013-3138Aggregate Severity Rating
Windows Vista
Windows Vista Service Pack 2 Moderate 
Denial of Service
Moderate 
Windows Vista x64 Edition Service Pack 2 Moderate 
Denial of Service
Moderate 
Windows Server 2008
Windows Server 2008 for 32-bit Systems Service Pack 2 Moderate 
Denial of Service
Moderate 
Windows Server 2008 for x64-based Systems Service Pack Moderate 
Denial of Service
Moderate 
Windows Server 2008 for Itanium-based Systems Service Pack 2 Moderate 
Denial of Service
Moderate 
Windows 7
Windows 7 for 32-bit Systems Service Pack 1 Moderate 
Denial of Service
Moderate 
Windows 7 for x64-based Systems Service Pack 1 Moderate 
Denial of Service
Moderate 
Windows Server 2008 R2
Windows Server 2008 R2 for x64-based Systems Service Pack 1Moderate 
Denial of Service
Moderate 
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 Moderate 
Denial of Service
Moderate 
Windows 8
Windows 8 for 32-bit Systems Important 
Denial of Service
Important 
Windows 8 for 64-bit Systems Important 
Denial of Service
Important 
Windows Server 2012
Windows Server 2012 Important 
Denial of Service
Important 
Windows RT
Windows RTImportant 
Denial of Service
Important 
Server Core installation option
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)Moderate 
Denial of Service
Moderate 
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Moderate 
Denial of Service
Moderate 
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Moderate 
Denial of Service
Moderate 
Windows Server 2012 (Server Core installation) Important 
Denial of Service
Important 

A denial of service vulnerability exists in the way that the Windows TCP/IP driver improperly handles packets during TCP connection. An attacker who successfully exploited this vulnerability could cause the target system to stop responding.

To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2013-3138.

Mitigating Factors

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:

  • Firewall best practices and standard default firewall configurations can help protect networks from attacks that originate outside the enterprise perimeter. Best practices recommend that systems connected directly to the Internet have a minimal number of ports exposed.

Workarounds

Microsoft has not identified any workarounds for this vulnerability.

FAQ

What is the scope of the vulnerability? 
This is a denial of service vulnerability.

What causes the vulnerability? 
The vulnerability is caused when the TCP/IP driver improperly handles packets during TCP connection.

What might an attacker use the vulnerability to do? 
An attacker who successfully exploited this vulnerability could cause the target system to stop responding.

How could an attacker exploit the vulnerability? 
An attacker could exploit this vulnerability by sending specially crafted packets to the server.

What systems are primarily at risk from the vulnerability? 
Workstations and terminal servers are primarily at risk. Servers could be at more risk if administrators allow users to log on to servers and to run programs. However, best practices strongly discourage allowing this.

What does the update do? 
The update addresses the vulnerability by correcting the way that the Windows TCP/IP driver handles specially crafted packets.

When this security bulletin was issued, had this vulnerability been publicly disclosed? 
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.

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

Several resources are available to help administrators deploy security updates. 

  • Microsoft Baseline Security Analyzer (MBSA) lets administrators scan local and remote systems for missing security updates and common security misconfigurations. 
  • Windows Server Update Services (WSUS), Systems Management Server (SMS), and System Center Configuration Manager (SCCM) help administrators distribute security updates. 
  • The Update Compatibility Evaluator components included with Application Compatibility Toolkit aid in streamlining the testing and validation of Windows updates against installed applications. 

For information about these and other tools that are available, see Security Tools for IT Pros

Affected Software

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

Windows Vista (all editions)

Reference Table

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

Security update file namesFor all supported 32-bit editions of Windows Vista:
Windows6.0-KB2845690-x86.msu
For all supported x64-based editions of Windows Vista:
Windows6.0-KB2845690-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementYes, you must restart your system after you apply this security update.
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 2845690
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows Server 2008 (all editions)

Reference Table

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

Security update file namesFor all supported 32-bit editions of Windows Server 2008:
Windows6.0-KB2845690-x86.msu
For all supported x64-based editions of Windows Server 2008:
Windows6.0-KB2845690-x64.msu
For all supported Itanium-based editions of Windows Server 2008:
Windows6.0-KB2845690-ia64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementYes, you must restart your system after you apply this security update.
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 2845690
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows 7 (all editions)

Reference Table

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

Security update file nameFor all supported 32-bit editions of Windows 7:
Windows6.1-KB2845690-x86.msu
For all supported x64-based editions of Windows 7:
Windows6.1-KB2845690-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementYes, you must restart your system after you apply this security update.
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 2845690
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows Server 2008 R2 (all editions)

Reference Table

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

Security update file nameFor all supported x64-based editions of Windows Server 2008 R2:
Windows6.1-KB2845690-x64.msu
For all supported Itanium-based editions of Windows Server 2008 R2:
Windows6.1-KB2845690-ia64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementYes, you must restart your system after you apply this security update.
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 2845690
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows 8 (all editions)

Reference Table

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

Security update file nameFor all supported 32-bit editions of Windows 8:
Windows8-RT-KB2845690-x86.msu
For all supported 64-bit editions of Windows 8:
Windows8-RT-KB2845690-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementYes, you must restart your system after you apply this security update.
Removal informationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 2845690
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows Server 2012 (all editions)

Reference Table

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

Security update file nameFor all supported editions of Windows Server 2012:
Windows8-RT-KB2845690-x64.msu
Installation switchesSee Microsoft Knowledge Base Article 934307
Restart requirementYes, you must restart your system after you apply this security update.
Removal informationTo uninstall an update installed by WUSA, use the /Uninstall setup switch or click Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File informationSee Microsoft Knowledge Base Article 2845690
Registry key verificationNote A registry key does not exist to validate the presence of this update.

Windows RT (all editions)

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

DeploymentThis update is available via Windows Update only.
Restart RequirementYes, you must restart your system after you apply this security update.
Removal InformationClick Control Panel, click System and Security, click Windows Update, and then under See also, click Installed updates and select from the list of updates.
File InformationSee Microsoft Knowledge Base Article 2845690

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 (June 11, 2013): Bulletin published.

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

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