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Microsoft Security Bulletin (MS00-025)
Procedure Available to Eliminate "Link View Server-Side Component"
Vulnerability
Originally Posted: April 14, 2000
A procedure is available to eliminate a security vulnerability in
several web server products. The vulnerability could allow a user who
has privileges on a web server to read certain files from other web
sites hosted on the same computer.
Frequently asked questions regarding this vulnerability and
the procedure can be found at
http://www.microsoft.com/technet/security/bulletin/fq00-025.asp
Dvwssr.dll is a server-side component used to support the Link View
feature in Visual Interdev 1.0. By design, it provides .asp files to
clients who have web authoring privileges on the server. However, it
does not properly restrict the files that a web author can request,
with the result that a user who has web authoring privileges on one
web site could request .asp files from anywhere on the server,
including other web sites hosted on it. However, even with this
vulnerability, the component would only comply with the request if
the specific file granted read access to the user.
There are some significant restrictions to this vulnerability:
The affected component is part of Visual Interdev 1.0. However, it is
a server-side component, and is included in the following products:
NOTE:
To eliminate this vulnerability, customers who are hosting web sites
should delete all copies of the file Dvwssr.dll from their servers.
The FAQ provides step-by-step instructions for doing this. The only
functionality lost by deleting the file is the ability to generate
link views using Visual Interdev 1.0.
Please see the following references for more information related to
this issue.
Information on contacting Microsoft Technical Support is available
at http://support.microsoft.com/support/contact/default.asp.
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 April 14, 2000
(c) 2000 Microsoft Corporation. All rights reserved. Terms of use.
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