Service Control Manager Named Pipe Impersonation Vulnerability (269523)


The information in this article applies to:

  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Professional
This article was previously published under Q269523

SYMPTOMS

It may be possible for a non-privileged user to elevate their existing security context to that of a service that was started by Service Control Manager (SCM). A malicious user could use a named pipe connection to instruct a Windows 2000-based computer to start a pre-defined process that has a security permission higher than the actual security permission that is assigned to the user.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

The following file is available for download from the Microsoft Download Center:

DownloadDownload Q269523_W2K_SP2_x86_en.exe now

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to Obtain Microsoft Support Files from Online Services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file. The English version of this fix should have the following file attributes or later:
   Date       Time     Size      File name
   --------------------------------------------------
   07/25/00   06:18p   707,344   Kernel32.dll
   07/25/00   06:17p   85,776    Services.exe

STATUS

Microsoft has confirmed that this is a problem in Microsoft Windows 2000. This problem was first corrected in Windows 2000 Service Pack 2.

MORE INFORMATION

For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:

249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

For related information about this problem, please visit the following Microsoft Web site:

http://www.microsoft.com/security/bulletins/ms00-053faq.asp

For additional security-related information about Microsoft products, please visit the following Microsoft Web site:

http://www.microsoft.com/security

Modification Type:MinorLast Reviewed:7/8/2005
Keywords:kbbug kbfix kbgraphxlinkcritical KbSECBulletin kbSecurity kbWin2000PreSP2Fix KB269523
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