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Microsoft Security Bulletin (MS00-087)
From: Microsoft Product Security <secnotif () MICROSOFT COM>
Date: Thu, 9 Nov 2000 18:33:38 -0500
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----- 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. ******************************** Microsoft Security Bulletin (MS00-087) - -------------------------------------- Patch Available for "Terminal Server Login Buffer Overflow" Vulnerability Originally posted: November 08, 2000 Summary ======= Microsoft has released a patch that eliminates a security vulnerability in Microsoft(r) Windows NT 4.0 Terminal Server. The vulnerability could allow a malicious user to cause the Terminal Server to fail or, in certain instances, to execute hostile code on the server. Frequently asked questions regarding this vulnerability and the patch can be found at http://www.microsoft.com/technet/security/bulletin/fq00-087.asp Issue ===== An unchecked buffer in the Terminal Server login prompt could allow a malicious user to cause the Terminal Server to execute arbitrary code. The ability to execute arbitrary code would enable the malicious user to add, change, or delete data, run code already on the server, or upload new code to the server and run it. The malicious user would not need to successfully login to the Terminal Server in order to initiate this attack. This vulnerability could be exploited remotely if connection requests are not filtered. By default, Terminal Server listens on tcp port 3389. This port should be blocked at the firewall and/or router if Terminal Server access from the Internet is not required. Affected Software Versions ========================== - Microsoft Windows NT 4.0 Terminal Server Patch Availability ================== - Microsoft Windows NT 4.0 Terminal Server: http://www.microsoft.com/Downloads/Release.asp?ReleaseID=25565 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 MS00-087 http://www.microsoft.com/technet/security/bulletin/fq00-087.asp - Microsoft Knowledge Base article Q277910 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 Bruno Acselrad of CORE SDI (www.core-sdi.com) for reporting this issue to us and working with us to protect customers. Revisions ========= November 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 November 08, 2000 -----BEGIN PGP SIGNATURE----- Version: PGP Personal Privacy 6.5.3 iQEVAwUBOgnZ/o0ZSRQxA/UrAQEWFwf/eUrzfHXx4FAmCT/+YYDVAXKo0GDOYMj7 VCuwMD0jvai9rtws7fkaZsL4zbo9Lkq5PP/IN4Tw3Dm8IQdIORlEG0E9+Ed1/oc5 3RMOX3PS1OWH5rUU6MHBtqfbel5qemEEU6P+iM8G48ZBkEPam0X62XpW0DopnS3j biVoCT6WKF51IL3PIy7vGLcBVthEcFvL9tbrpPr8uQjmNkPvXEZ8mGiOsxWWh2K5 i9E9xpQ3sgD7wOjCxlTHNzPvL4ubOvufaityQK73vl5rFbrdxKEfU2fBNuLgnsDd azKhjeQsGm/8adrPz4ZNXavu39iceY5S2r0UDW6Ks9EahRBBZAzEkg== =t8sV -----END PGP SIGNATURE----- ******************************************************************* 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. 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