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Security Bulletin
Published: August 13, 2013 | Updated: December 16, 2013
Version: 1.1
This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if an attacker sends a specially crafted RPC request.
This security update is rated Important for all supported releases of Microsoft Windows. For more information, see the subsection, Affected and Non-Affected Software, in this section.
The security update addresses the vulnerability by correcting the way that Microsoft Windows handles asynchronous RPC messages. 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 | 2849470 |
|---|---|
| File information | Yes |
| SHA1/SHA2 hashes | Yes |
| Known issues | Yes |
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 System | Maximum Security Impact | Aggregate Severity Rating | Updates Replaced |
|---|---|---|---|
| Windows XP | |||
| Windows XP Service Pack 3 (2849470) | Elevation of Privilege | Important | 2360937 in MS10-084 |
| Windows XP Professional x64 Edition Service Pack 2 (2849470) | Elevation of Privilege | Important | 2360937 in MS10-084 |
| Windows Server 2003 | |||
| Windows Server 2003 Service Pack 2 (2849470) | Elevation of Privilege | Important | 2360937 in MS10-084 |
| Windows Server 2003 x64 Edition Service Pack 2 (2849470) | Elevation of Privilege | Important | 2360937 in MS10-084 |
| Windows Server 2003 with SP2 for Itanium-based Systems (2849470) | Elevation of Privilege | Important | 2360937 in MS10-084 |
| Windows Vista | |||
| Windows Vista Service Pack 2 (2849470) | Elevation of Privilege | Important | 970238 in MS09-026 |
| Windows Vista x64 Edition Service Pack 2 (2849470) | Elevation of Privilege | Important | 970238 in MS09-026 |
| Windows Server 2008 | |||
| Windows Server 2008 for 32-bit Systems Service Pack 2 (2849470) | Elevation of Privilege | Important | 970238 in MS09-026 |
| Windows Server 2008 for x64-based Systems Service Pack 2 (2849470) | Elevation of Privilege | Important | 970238 in MS09-026 |
| Windows Server 2008 for Itanium-based Systems Service Pack 2 (2849470) | Elevation of Privilege | Important | 970238 in MS09-026 |
| Windows 7 | |||
| Windows 7 for 32-bit Systems Service Pack 1 (2849470) | Elevation of Privilege | Important | None |
| Windows 7 for x64-based Systems Service Pack 1 (2849470) | Elevation of Privilege | Important | None |
| Windows Server 2008 R2 | |||
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (2849470) | Elevation of Privilege | Important | None |
| Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 (2849470) | Elevation of Privilege | Important | None |
| Windows 8 | |||
| Windows 8 for 32-bit Systems (2849470) | Elevation of Privilege | Important | None |
| Windows 8 for 64-bit Systems (2849470) | Elevation of Privilege | Important | None |
| Windows Server 2012 | |||
| Windows Server 2012 (2849470) | Elevation of Privilege | Important | None |
| Windows RT | |||
| Windows RT[1](2849470) | Elevation of Privilege | Important | None |
| Server Core installation option | |||
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) (2849470) | Elevation of Privilege | Important | 970238 in MS09-026 |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) (2849470) | Elevation of Privilege | Important | 970238 in MS09-026 |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) (2849470) | Elevation of Privilege | Important | None |
| Windows Server 2012 (Server Core installation) (2849470) | Elevation of Privilege | Important | None |
[1]This update is available via 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 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.
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 August bulletin summary. For more information, see Microsoft Exploitability Index.
| Affected Software | Remote Procedure Call Vulnerability - CVE-2013-3175 | Aggregate Severity Rating |
|---|---|---|
| Windows XP | ||
| Windows XP Service Pack 3 | Important Elevation of Privilege | Important |
| Windows XP Professional x64 Edition Service Pack 2 | Important Elevation of Privilege | Important |
| Windows Server 2003 | ||
| Windows Server 2003 Service Pack 2 | Important Elevation of Privilege | Important |
| Windows Server 2003 x64 Edition Service Pack 2 | Important Elevation of Privilege | Important |
| Windows Server 2003 with SP2 for Itanium-based Systems | Important Elevation of Privilege | Important |
| Windows Vista | ||
| Windows Vista Service Pack 2 | Important Elevation of Privilege | Important |
| Windows Vista x64 Edition Service Pack 2 | Important Elevation of Privilege | Important |
| Windows Server 2008 | ||
| Windows Server 2008 for 32-bit Systems Service Pack 2 | Important Elevation of Privilege | Important |
| Windows Server 2008 for x64-based Systems Service Pack 2 | Important Elevation of Privilege | Important |
| Windows Server 2008 for Itanium-based Systems Service Pack 2 | Important Elevation of Privilege | Important |
| Windows 7 | ||
| Windows 7 for 32-bit Systems Service Pack 1 | Important Elevation of Privilege | Important |
| Windows 7 for x64-based Systems Service Pack 1 | Important Elevation of Privilege | Important |
| Windows Server 2008 R2 | ||
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | Important Elevation of Privilege | Important |
| Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 | Important Elevation of Privilege | Important |
| Windows 8 | ||
| Windows 8 for 32-bit Systems | Important Elevation of Privilege | Important |
| Windows 8 for 64-bit Systems | Important Elevation of Privilege | Important |
| Windows Server 2012 | ||
| Windows Server 2012 | Important Elevation of Privilege | Important |
| Windows RT | ||
| Windows RT | Important Elevation of Privilege | Important |
| Windows Server Core installation option | ||
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | Important Elevation of Privilege | Important |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | Important Elevation of Privilege | Important |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | Important Elevation of Privilege | Important |
| Windows Server 2012 (Server Core installation) | Important Elevation of Privilege | Important |
An elevation of privilege vulnerability exists in the way that Windows handles asynchronous RPC requests. An attacker who successfully exploited this vulnerability could execute arbitrary code and take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2013-3175.
Microsoft has not identified any mitigating factors for this vulnerability.
Microsoft has not identified any workarounds for this vulnerability.
What is the scope of the vulnerability?
This is an elevation of privilege vulnerability.
What causes the vulnerability?
The vulnerability is caused by the way that Windows handles asynchronous RPC requests.
What is Remote Procedure Call (RPC)?
Microsoft Remote Procedure Call (RPC) is an inter-process communication (IPC) mechanism that enables data exchange and invocation of functionality residing in a different process. That process can be on the same computer, on the local area network (LAN), or across the Internet. The Microsoft RPC mechanism uses other IPC mechanisms, such as named pipes, NetBIOS, or Winsock, to establish communications between the client and the server. With RPC, essential program logic and related procedure code can exist on different computers, which is important for distributed applications. For more information, see the TechNet article, What Is RPC?.
What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability could execute arbitrary code within the context of another user. If that other user has elevated rights, 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?
An attacker could exploit the vulnerability by making malformed RPC requests to a shared host.
What systems are primarily at risk from the vulnerability?
Both workstations and servers are at risk. Systems that allow RPC traffic from untrusted networks could be at more risk.
What does the update do?
The security update addresses the vulnerability by modifying the way that Microsoft Windows handles asynchronous RPC messages.
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.
Several resources are available to help administrators deploy security updates.
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:
Reference Table
The following table contains the security update information for this software.
| Security update file names | For Windows XP Service Pack 3:\ WindowsXP-KB2849470-x86-enu.exe |
|---|---|
| For Windows XP Professional x64 Edition Service Pack 2:\ WindowsServer2003.WindowsXP-KB2849470-x64-enu.exe | |
| Installation switches | See Microsoft Knowledge Base Article 262841 |
| Update log file | KB2849470.log |
| Restart requirement | Yes, you must restart your system after you apply this security update. |
| Removal information | Use Add or Remove Programs item in Control Panel or the Spuninst.exe utility located in the %Windir%$NTUninstallKB2849470$\Spuninst folder |
| File information | See Microsoft Knowledge Base Article 2849470 |
| Registry key verification | For all supported 32-bit editions of Windows XP:\ HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP\SP4\KB2849470\Filelist |
| For all supported x64-based editions of Windows XP:\ HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP Version 2003\SP3\KB2849470\Filelist |
Note The update for supported versions of Windows XP Professional x64 Edition also applies to supported versions of Windows Server 2003 x64 Edition.
Reference Table
The following table contains the security update information for this software.
| Security update file names | For all supported 32-bit editions of Windows Server 2003:\ WindowsServer2003-KB2849470-x86-enu.exe |
|---|---|
| For all supported x64-based editions of Windows Server 2003:\ WindowsServer2003.WindowsXP-KB2849470-x64-enu.exe | |
| For all supported Itanium-based editions of Windows Server 2003:WindowsServer2003-KB2849470-ia64-enu.exe | |
| Installation switches | See Microsoft Knowledge Base Article 262841 |
| Update log file | KB2849470.log |
| Restart requirement | Yes, you must restart your system after you apply this security update. |
| Removal information | Use Add or Remove Programs item in Control Panel or the Spuninst.exe utility located in the %Windir%$NTUninstallKB2849470$\Spuninst folder |
| File information | See Microsoft Knowledge Base Article 2849470 |
| Registry key verification | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows Server 2003\SP3\KB2849470\Filelist |
Note The update for supported versions of Windows Server 2003 x64 Edition also applies to supported versions of Windows XP Professional x64 Edition.
Reference Table
The following table contains the security update information for this software.
| Security update file names | For all supported 32-bit editions of Windows Vista:\ Windows6.0-KB2849470-x86.msu |
|---|---|
| For all supported x64-based editions of Windows Vista:\ Windows6.0-KB2849470-x64.msu | |
| Installation switches | See Microsoft Knowledge Base Article 934307 |
| Restart requirement | Yes, you must restart your system after you apply this security update. |
| Removal information | WUSA.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 information | See Microsoft Knowledge Base Article 2849470 |
| Registry key verification | Note A registry key does not exist to validate the presence of this update. |
Reference Table
The following table contains the security update information for this software.
| Security update file names | For all supported 32-bit editions of Windows Server 2008:\ Windows6.0-KB2849470-x86.msu |
|---|---|
| For all supported x64-based editions of Windows Server 2008:\ Windows6.0-KB2849470-x64.msu | |
| For all supported Itanium-based editions of Windows Server 2008:\ Windows6.0-KB2849470-ia64.msu | |
| Installation switches | See Microsoft Knowledge Base Article 934307 |
| Restart requirement | Yes, you must restart your system after you apply this security update. |
| Removal information | WUSA.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 information | See Microsoft Knowledge Base Article 2849470 |
| Registry key verification | Note A registry key does not exist to validate the presence of this update. |
Reference Table
The following table contains the security update information for this software.
| Security update file name | For all supported 32-bit editions of Windows 7:\ Windows6.1-KB2849470-x86.msu |
|---|---|
| For all supported x64-based editions of Windows 7:\ Windows6.1-KB2849470-x64.msu | |
| Installation switches | See Microsoft Knowledge Base Article 934307 |
| Restart requirement | Yes, you must restart your system after you apply this security update. |
| Removal information | To 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 information | See Microsoft Knowledge Base Article 2849470 |
| Registry key verification | Note A registry key does not exist to validate the presence of this update. |
Reference Table
The following table contains the security update information for this software.
| Security update file name | For all supported x64-based editions of Windows Server 2008 R2:\ Windows6.1-KB2849470-x64.msu |
|---|---|
| For all supported Itanium-based editions of Windows Server 2008 R2:\ Windows6.1-KB2849470-ia64.msu | |
| Installation switches | See Microsoft Knowledge Base Article 934307 |
| Restart requirement | Yes, you must restart your system after you apply this security update. |
| Removal information | To 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 information | See Microsoft Knowledge Base Article 2849470 |
| Registry key verification | Note A registry key does not exist to validate the presence of this update. |
Reference Table
The following table contains the security update information for this software.
| Security update file name | For all supported 32-bit editions of Windows 8:\ Windows8-RT-KB2849470-x86.msu |
|---|---|
| For all supported 64-bit editions of Windows 8:\ Windows8-RT-KB2849470-x64.msu | |
| Installation switches | See Microsoft Knowledge Base Article 934307 |
| Restart requirement | Yes, you must restart your system after you apply this security update. |
| Removal information | To 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 information | See Microsoft Knowledge Base Article 2849470 |
| Registry key verification | Note A registry key does not exist to validate the presence of this update. |
Reference Table
The following table contains the security update information for this software.
| Security update file name | For all supported editions of Windows Server 2012:\ Windows8-RT-KB2849470-x64.msu |
|---|---|
| Installation switches | See Microsoft Knowledge Base Article 934307 |
| Restart requirement | Yes, you must restart your system after you apply this security update. |
| Removal information | To 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 information | See Microsoft Knowledge Base Article 2849470 |
| Registry key verification | Note A registry key does not exist to validate the presence of this update. |
The following table contains the security update information for this software.
| Deployment | This update is available via Windows Update only. |
| Restart Requirement | Yes, you must restart your system after you apply this security update. |
| Removal Information | 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 Information | See Microsoft Knowledge Base Article 2849470 |
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.
How to obtain help and support for this security update
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.
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