what you don't know can hurt you

ms00-088

ms00-088
Posted Nov 17, 2000

Microsoft Security Bulletin (MS00-088) - Microsoft has released a patch that eliminates a vulnerability in the Microsoft Exchange 2000 and Exchange 2000 Enterprise Servers that could potentially allow an unauthorized user remote access to the server. Microsoft FAQ on this issue available here

tags | remote
MD5 | e367a3cd735c5313af66b556007865f5

ms00-088

Change Mirror Download
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.

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