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RPC service crashes on a Windows 7-based or Windows Server 2008 R2-based COM client

View products that this article applies to.

Symptoms

Consider the following scenario:
  • You have a Windows 7-based or Windows Server 2008 R2-based computer that runs as a COM client.
  • You have a COM server that supports remote procedure calls (RPCs) from the COM client. 
  • The COM client uses the RemoteServerName registry entry to obtain the remote COM server name dynamically.
In this scenario, the RPC service crashes on the COM client. Additionally, the COM client restarts after the RPC service crashes.

Note The RemoteServerName registry entry is located under the following registry subkey:
\HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\{GUID}

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Cause

This issue occurs because the GetRegistryStringValue function assumes that the value type of the RemoteServerName registry entry is REG_MULTI_SZ. Therefore, a heap overflow occurs in the rpcss!GetRegistryStringValue method.

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Resolution

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:
  • Windows 7
  • Windows 7 Service Pack 1 (SP1)
  • Windows Server 2008 R2
  • Windows Server 2008 R2 Service Pack 1 (SP1)
For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To apply this hotfix, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.
File information
The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows 7 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
    VersionProductMilestoneService branch
    6.1.760
    0.21xxx    		Windows 7 and Windows Server 2008 R2RTMLDR
    6.1.760
    1.22xxx    		Windows 7 and Windows Server 2008 R2SP1LDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7 and for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintaining the state of the updated component. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows 7
File nameFile versionFile sizeDateTimePlatformService branch
Rpcss.dll6.1.7600.21448376,32013-Feb-201312:38x86X86_MICROSOFT-WINDOWS-COM-BASE-QFE
Rpcss.dll6.1.7601.22249377,34413-Feb-201311:26x86X86_MICROSOFT-WINDOWS-COM-BASE-QFE
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatformService branch
Rpcss.dll6.1.7600.21448509,95213-Feb-201313:21x64AMD64_MICROSOFT-WINDOWS-COM-BASE-QFE
Rpcss.dll6.1.7601.22249512,00013-Feb-201312:25x64AMD64_MICROSOFT-WINDOWS-COM-BASE-QFE
For all supported IA-64-based versions of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatformService branch
Rpcss.dll6.1.7600.214481,085,95213-Feb-201312:31IA-64IA64_MICROSOFT-WINDOWS-COM-BASE-QFE
Rpcss.dll6.1.7601.222491,086,46413-Feb-201311:24IA-64IA64_MICROSOFT-WINDOWS-COM-BASE-QFE

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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More Information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
File nameX86_279d4e6878a35c5360b92e70fc78fe69_31bf3856ad364e35_6.1.7601.22249_none_883515b136ce96ee.manifest
File versionNot applicable
File size706
Date (UTC)13-Feb-2013
Time (UTC)15:05
PlatformNot applicable
File nameX86_96ef921cc8ac94d3a769a97ee7ec1d29_31bf3856ad364e35_6.1.7600.21448_none_688ca72f6317f987.manifest
File versionNot applicable
File size706
Date (UTC)13-Feb-2013
Time (UTC)15:05
PlatformNot applicable
File nameX86_microsoft-windows-com-base-qfe-rpcss_31bf3856ad364e35_6.1.7600.21448_none_6a58f8b0b82e2959.manifest
File versionNot applicable
File size2,003
Date (UTC)13-Feb-2013
Time (UTC)13:08
PlatformNot applicable
File nameX86_microsoft-windows-com-base-qfe-rpcss_31bf3856ad364e35_6.1.7601.22249_none_6c405600b553ae9c.manifest
File versionNot applicable
File size2,003
Date (UTC)13-Feb-2013
Time (UTC)11:55
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameAmd64_9ce9198114bce21d2937344f4d6037cc_31bf3856ad364e35_6.1.7601.22249_none_c1c8a7e719d4e1b2.manifest
File versionNot applicable
File size710
Date (UTC)13-Feb-2013
Time (UTC)15:05
PlatformNot applicable
File nameAmd64_ea90006165610869f049c4aa106b660c_31bf3856ad364e35_6.1.7600.21448_none_2a569f66e280b609.manifest
File versionNot applicable
File size710
Date (UTC)13-Feb-2013
Time (UTC)15:05
PlatformNot applicable
File nameAmd64_microsoft-windows-com-base-qfe-rpcss_31bf3856ad364e35_6.1.7600.21448_none_c6779434708b9a8f.manifest
File versionNot applicable
File size2,005
Date (UTC)13-Feb-2013
Time (UTC)14:20
PlatformNot applicable
File nameAmd64_microsoft-windows-com-base-qfe-rpcss_31bf3856ad364e35_6.1.7601.22249_none_c85ef1846db11fd2.manifest
File versionNot applicable
File size2,005
Date (UTC)13-Feb-2013
Time (UTC)13:00
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File nameIa64_8a961a382c805c5d3ee3dc1ccba71e83_31bf3856ad364e35_6.1.7600.21448_none_6110991dba6b569a.manifest
File versionNot applicable
File size708
Date (UTC)13-Feb-2013
Time (UTC)15:05
PlatformNot applicable
File nameIa64_e3cdb1e4e2252a71f45a2c3374d63e70_31bf3856ad364e35_6.1.7601.22249_none_26c09b4ee7259f52.manifest
File versionNot applicable
File size708
Date (UTC)13-Feb-2013
Time (UTC)15:05
PlatformNot applicable
File nameIa64_microsoft-windows-com-base-qfe-rpcss_31bf3856ad364e35_6.1.7600.21448_none_6a5a9ca6b82c3255.manifest
File versionNot applicable
File size2,004
Date (UTC)13-Feb-2013
Time (UTC)14:07
PlatformNot applicable
File nameIa64_microsoft-windows-com-base-qfe-rpcss_31bf3856ad364e35_6.1.7601.22249_none_6c41f9f6b551b798.manifest
File versionNot applicable
File size2,004
Date (UTC)13-Feb-2013
Time (UTC)11:53
PlatformNot applicable

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Keywords: kb, kbautohotfix, kbqfe, kbhotfixserver, kbfix, kbsurveynew, kbexpertiseadvanced

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Article Info
Article ID : 2815853
Revision : 1
Created on : 1/7/2017
Published on : 4/9/2013
Exists online : False
Views : 138