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Microsoft Security Bulletin (MS00-040)
From: secnotif () MICROSOFT COM (Microsoft Product Security)
Date: Thu, 8 Jun 2000 16:56:31 -0700
The following is a Security Bulletin from the Microsoft Product Security Notification Service. Please do not reply to this message, as it was sent from an unattended mailbox. ******************************** -----BEGIN PGP SIGNED MESSAGE----- Microsoft Security Bulletin (MS00-040) -----BEGIN PGP SIGNATURE----- Version: PGP 6.0.2 iQEVAwUBOUAy1o0ZSRQxA/UrAQFuWwf9FYnh1nL0kq2oeZv4X723K1k36cCHvfyL 4E3gWltp7MNf7294v8Nih94bJy1OTCvqoniAchDjgmZVN8JGndmV+GI1Ud+gjrGn t6Y1rtlbN2N2A095YC4Hr5Xc11Q+kUFVyfCn2/xlWMUHBtqg1erUIZu4Mc+2tD34 Y7X5ww3GPL95BI/3bkyIggF64uZSmXamURgEkd/9kVQOaqTNEaC5r+63H+bijD3E QqKcnWhLZiBbjajHFZbOnLXBWjW6BhNv6e6MXXj+J0W6EBq0QLCu2NvoVIiwAaT+ vB/F01UlpTMTISsFVG7YsOQnjwYFepVglE7xOatMPwQO/Uwjabgorw== =mTOp -----END PGP SIGNATURE----- -------------------------------------- Patch Available for "Remote Registry Access Authentication" Vulnerability Originally posted: June 08, 2000 Summary ======= Microsoft has released a patch that eliminates a security vulnerability in Microsoft(r) Windows NT 4.0. Under certain conditions, the vulnerability could be used to cause a Windows NT 4.0 machine to fail. Frequently asked questions regarding this vulnerability and the patch can be found at http://www.microsoft.com/technet/security/bulletin/fq00-040.asp Issue ===== Before a request to access the registry from a remote machine can be processed, it must first be authenticated by the Remote Registry server. If the request is malformed in a specific fashion, it could be misinterpreted by the remote registry server, causing it to fail. Because the Remote Registry server is contained within the winlogon.exe system process on Windows NT 4.0, a failure in that process would cause the entire system to fail. Only an authenticated user could levy such a request -- an anonymous (or null-session) connection could not cause this failure. An affected machine could be put back into service by rebooting. Affected Software Versions ========================== - Microsoft Windows NT 4.0 Workstation - Microsoft Windows NT 4.0 Server - Microsoft Windows NT 4.0 Server, Enterprise Edition - Microsoft Windows NT 4.0 Server, Terminal Server Edition Note: Windows 2000 is not affected by this vulnerability. Patch Availability ================== - Microsoft Windows NT 4.0 Workstation, Server, and Server, Enterprise Edition: http://www.microsoft.com/Downloads/Release.asp?ReleaseID=21772 - Microsoft Windows NT 4.0 Server, Terminal Server Edition: To be released shortly 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 MS00-040, http://www.microsoft.com/technet/security/bulletin/fq00-040.asp - Microsoft Knowledge Base article Q264684 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 Technical Support is available at http://support.microsoft.com/support/contact/default.asp. Acknowledgments =============== Microsoft thanks Renaud Deraison from the Nessus Team (http://www.nessus.org/) for reporting this issue to us and working with us to protect customers. Revisions ========= - June 08, 2000: Bulletin Created. ----------------------------------------------------------- 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. Last Updated June 08, 2000 (c) 2000 Microsoft Corporation. All rights reserved. Terms of use. ******************************************************************* You have received this e-mail bulletin as a result of your registration to the Microsoft Product Security Notification Service. You may unsubscribe from this e-mail notification service at any time by sending an e-mail to MICROSOFT_SECURITY-SIGNOFF-REQUEST () ANNOUNCE MICROSOFT COM The subject line and message body are not used in processing the request, and can be anything you like. To verify the digital signature on this bulletin, please download our PGP key at http://www.microsoft.com/technet/security/notify.asp. For more information on the Microsoft Security Notification Service please visit http://www.microsoft.com/technet/security/notify.asp. For security-related information about Microsoft products, please visit the Microsoft Security Advisor web site at http://www.microsoft.com/security.
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