SecurityvulnsSECURITYVULNS:DOC:503Security Bulletin (MS00-053)
Microsoft Security Bulletin (MS00-053)
Patch Available for "Service Control Manager Named Pipe
Impersonation" Vulnerability
Originally posted: August 02, 2000
Summary
Microsoft has released a patch that eliminates a security
vulnerability in Microsoft(r) Windows 2000(r). The vulnerability
could allow a user logged onto a Windows 2000 machine from the
keyboard to become an administrator on the machine.
Frequently asked questions regarding this vulnerability
and the patch can be found at
http://www.microsoft.com/technet/security/bulletin/fq00-053.asp
Issue
The Service Control Manager (services.exe) is an administrative tool
provided in Windows 2000 that allows system services (Server,
Workstation, Alerter, ClipBook, etc.) to be created or modified. The
SCM creates a named pipe for each service as it starts, however,
should a malicious program predict and create the named pipe for a
specific service before the service starts, the program could
impersonate the privileges of the service. This could allow the
malicious program to run in the context of the given service, with
either specific user or LocalSystem privileges.
The primary risk from this vulnerability is that a malicious user
could exploit this vulnerability to gain additional privileges on
the local machine. A malicious user would require the ability to log
onto the target machine interactively and run arbitrary programs in
order to exploit this vulnerability, and as a result, workstations
and terminal servers would be at greatest risk.
Affected Software Versions
- Microsoft Windows 2000 Professional
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Advanced Server
Patch Availability
Note: Additional security patches are available at the Microsoft
Download Center
More Information
Please see the following references for more information related to
this issue.
- Frequently Asked Questions: Microsoft Security Bulletin MS00-053,
http://www.microsoft.com/technet/security/bulletin/fq00-053.asp - Microsoft Knowledge Base article Q269523 discusses this issue
and will be available soon. - Microsoft TechNet Security web site,
http://www.microsoft.com/technet/security/default.asp
Obtaining Support on this Issue
This is a fully supported patch. Information on contacting
Microsoft Product Support Services is available at
http://support.microsoft.com/support/contact/default.asp.
Acknowledgments
Microsoft thanks the R&D department of Guardent (www.guardent.com)
for reporting this issue to us and working with us to protect
customers.
Revisions
August 02, 2000: Bulletin Created.
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Last Updated August 2, 2000
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