VULNERABILITY The risk is HIGH. Vulnerability allows remote ASSESSMENT: administrative access without prior privileges.
- - --- Begin Microsoft Bulletin --- Microsoft Security Bulletin (MS00-083) Patch Available for “Netmon Protocol Parsing” Vulnerability Originally posted: November 01, 2000 Summary Microsoft has released a patch that eliminates a security vulnerability in Microsoft® Windows NT® and Windows® 2000 server products and Systems Management Server. The vulnerability could allow a malicious user to gain control of an affected server. Frequently asked questions regarding this vulnerability and the patch can be found at: http://www.microsoft.com/technet/security/bulletin/fq00-083.asp Issue Microsoft ships two versions of Network Monitor (Netmon): a basic version that ships with Windows NT 4.0 and Windows 2000 server products, and full version that ships as part of Systems Management server (SMS) 1.2 and 2.0. Both versions include protocol parsers that aid administrators in interpreting and analyzing previously-captured network data. However, several of the parsers have unchecked buffers. If a malicious user delivered a specially-malformed frame to a server that was monitoring network traffic, and the administrator parsed it using an affected parser, it would have the effect of either causing Netmon to fail or causing code of the malicious user’s choice to run on the machine. Netmon requires administrative privileges to run, but should only be run by local, rather than domain, administrators. If this is done, the vulnerability could be used to gain complete control over the local machine, but could not be used to gain control over a domain. Netmon does not ship on workstation products, so unless SMS had been installed on a workstation, it would not be affected by this vulnerability. Affected Software Versions Microsoft Windows NT 4.0 Server Microsoft Windows NT 4.0 Server, Terminal Server Edition Microsoft Windows NT 4.0 Server, Enterprise Edition Microsoft Windows 2000 Server Microsoft Windows 2000 Advanced Server Microsoft Windows 2000 Datacenter Server Microsoft Systems Management Server 1.2 Microsoft Systems Management Server 2.0 Note: Netmon does not ship as part of Windows NT 4.0 Workstation or Windows 2000 Professional. These products would only be affected if SMS had been installed on them. Patch Availability Microsoft Windows NT 4.0 Server and Windows NT 4.0 Server, Enterprise Edition: http://www.microsoft.com/Downloads/Release.asp?ReleaseID=25487 Microsoft Windows NT 4.0 Server, Terminal Server Edition: To be released shortly. Microsoft Windows 2000 Server, Advanced Server and Datacenter Server: http://www.microsoft.com/Downloads/Release.asp?ReleaseID=25485 Microsoft Systems Management Server 1.2: http://www.microsoft.com/Downloads/Release.asp?ReleaseID=25505 Microsoft Systems Management Server 2.0: http://www.microsoft.com/Downloads/Release.asp?ReleaseID=25514 Note: Customers who are running SMS should apply the SMS patch, regardless of the platform they are running on. Customers who are not running SMS but are using an affected server should apply the operating system patch. Note: The patch for Windows NT 4.0 Server and Windows NT 4.0 Server, Enterprise Edition, should be applied atop Service Pack 6a. It will be included in Service Pack 7. The patch for Windows NT 4.0 Server, Terminal Server Edition, should be applied atop Service Pack 6. It will be included in Service Pack 7. The patch for Windows 2000 can be applied to computers running Windows 2000 "Gold" or Service Pack 1. It will be included in Windows Service Pack 2. The patch for SMS 1.2 should be applied atop SMS 1.2 Service Pack 4. The patch for SMS 2.0 can be applied to SMS 2.0 Gold, Service Pack 1, or Service Pack 2. It will be included in Service Pack 3. 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 MS00-083, http://www.microsoft.com/technet/security/bulletin/fq00-083.asp Microsoft Knowledge Base article Q274835 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 COVERT Labs at PGP Security, Inc., and the ISS X-force for reporting this issue to us and working with us to protect customers. - - --- End Microsoft Bulletin ---
CIAC wishes to acknowledge the contributions of Microsoft for information contained in this bulletin.
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UCRL-MI-119788
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