DOCUMENT:Q242559
TITLE   :Files on an FTP Server Can Be Improperly Accessed
PRODUCT :MCIS
PROD/VER:2.5
OPER/SYS:WINDOWS NT

-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Commercial Internet System version 2.5
   on the following platforms: Alpha, NT, winnt, x86 
-------------------------------------------------------------------------------

SYMPTOMS
========

After you apply the hotfix referenced in the following Microsoft Knowledge Base
article, there is a possibility that files located on a Microsoft FTP server can
be viewed and downloaded regardless of NTFS file or folder permissions.

   Q237987 FTP GET Does Not Work Correctly on UNC Virtual Directories

If the aforementioned hotfix is applied to your IIS 4.0-based computer or if you
have applied a hotfix with the version number of 0719 through 0722, it is
recommended that you update your system with the security patch mentioned below.

RESOLUTION
==========

A supported fix that corrects this problem is now available from Microsoft, but
it has not been fully regression tested and should be applied only to systems
experiencing this specific problem. If you are not severely affected by this
specific problem, Microsoft recommends that you wait for the next Commercial
Internet System service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services
to obtain the fix. For a complete list of Microsoft Product Support Services
phone numbers and information on support costs, please go to the following
address on the World Wide Web:

   http://www.microsoft.com/support/supportnet/overview/overview.asp

The English version of this fix should have the following file attributes or
later:

   Date      Time    Version      Size    File name     Platform
   -------------------------------------------------------------
   09/16/99  03:40PM 8.0.351.0   85,264   Ftpsvc2.dll   x86
   09/16/99  12:39PM 8.0.351.0  150,288   Ftpsvc2.dll   Alpha

This hotfix has been posted to the following Internet location as as Q242559.exe
(x86):

   ftp://ftp.microsoft.com/bussys/mcis/mcis-public/fixes/usa/mcis25/security/
   ftpsvc-fix/x86/

This hotfix has been posted to the following Internet location as as Q242559.exe
(Alpha):

   ftp://ftp.microsoft.com/bussys/mcis/mcis-public/fixes/usa/mcis25/security/
   ftpsvc-fix/Alpha/

STATUS
======

Microsoft has confirmed this to be a problem in Commercial Internet System 2.5.

MORE INFORMATION
================

For additional information about how to fix this problem in Internet Information
Server version 4.0, click the article number below to view the article in the
Microsoft Knowledge Base:

   Q241407 Files on an FTP Server Can Be Improperly Accessed

For related information on this problem, please visit the following Microsoft Web
site:

   http://www.microsoft.com/security/bulletins/ms99-039.asp

For additional security-related information about Microsoft products, please
visit the following Microsoft Web site:

   http://www.microsoft.com/security/

Additional query words:
============================================================================

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.