[ SOURCE: http://www.secureroot.com/security/advisories/9744303655.html ] -----BEGIN PGP SIGNED MESSAGE----- Microsoft Security Bulletin (MS00-088) - -------------------------------------- Patch Available for "Exchange User Account" Vulnerability Originally posted: November 16, 2000 Summary ======= Microsoft has released a patch that eliminates a security vulnerability in Microsoft(r) Exchange 2000 Server and Exchange 2000 Enterprise Server. This vulnerability could potentially allow an unauthorized user to remotely login to an Exchange 2000 server and possibly other servers on the affected computer's network. Frequently asked questions regarding this vulnerability and the patch can be found at http://www.microsoft.com/technet/security/bulletin/fq00-088.asp Issue ===== In early shipments of Exchange 2000, setup creates an account with a known username and password. If a malicious user learned the username and password, he or she could log onto the account. Under normal circumstances, this account only has local user rights - it is not a privileged account and cannot access Exchange 2000 data. However, if Exchange 2000 were installed on a Domain Controller, the account would also have Domain user privileges, and could thus gain access to other resources in the affected Domain. Nevertheless, he would still be restricted from accessing Exchange 2000 data. To eliminate the security vulnerability, Microsoft has provided a manual procedure, discussed in the FAQ, and a tool to protect our customers. Microsoft also recommends that customers affected by this vulnerability disable or delete this account after setup completes. In addition, Exchange 2000 SP1 will contain a fix that removes this vulnerability. Affected Software Versions ========================== - Microsoft Exchange 2000 Server CDs without "Rev. A" stamped on the CD on the line below the Part No. - Microsoft Exchange 2000 Enterprise Server CDs without "Rev. A" stamped on the CD below the Part No. Note: This also applies to evaluation editions and to Microsoft Exchange 2000 Server and Microsoft Exchange 2000 Enterprise Server included on the October 2000 Select CDs. Patch Availability ================== - The Tool can be downloaded from: http://www.microsoft.com/Downloads/Release.asp?ReleaseID=25866 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 MS00-088, http://www.microsoft.com/technet/security/bulletin/fq00-088.asp - Microsoft Knowledge Base (KB) article Q278523, http://www.microsoft.com/technet/support/kb.asp?ID=278523 - 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. Revisions ========= - November 16, 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 16, 2000 (c) 2000 Microsoft Corporation. All rights reserved. Terms of use. -----BEGIN PGP SIGNATURE----- Version: PGP Personal Privacy 6.5.3 iQEVAwUBOhRZLI0ZSRQxA/UrAQH/yQf/SfOoloJE4MZweN2XWCCMexpKajTR+upp BWWNPTUkFMdxox9rBryoPDaqLIuT94wjoTF9qaCqHvZUOT7azHsld++UahpqjIxM RDSZgcaIjeUlk1evTlazB2vGa6mtC5sb6LTQU6kwwChMMKnw7MwcYjJa7aXDjKBb dwpLamDsuGcbP5dC8oDmKrOuzATy36wtJRYnnjsvDLWCW/lv2fMw1fyEI6DI5LJy Jsgn29QvGAkav4bNtsxF5OaOW6BPgzUXCnutHOQJJVsFXypugBEhfy0Cni6t60fd iCRY0h5/KrzBYLGVuGzeDSx8DfbEXkyrm9+zP9g9JxmeP50vZ4J6Vw== =qsRV -----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. 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.