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Related information

  Проблемы с безопасностью на уровне ресурсов в Windows 95/98/ME (Share Level Password)

  NSFOCUS SA2000-03: Microsoft WIN9X Share Service File Handle              Vulnerab
ility

  NSFOCUS SA2000-05: Microsoft Windows 9x NETBIOS password              verifica
tion vulnerability

From:MICROSOFT <secure_(at)_microsoft.com>
Date:11.10.2000
Subject:Security Bulletin (MS00-072)

Microsoft Security Bulletin (MS00-072)
- --------------------------------------

Patch Available for "Share Level Password" Vulnerability
Originally posted: October 10, 2000

Summary
=======
Microsoft has released a patch that eliminates a security
vulnerability in Microsoft(r) Windows 95, 98, 98SE, and Windows Me.
The vulnerability could allow a malicious user to programmatically
access a Windows 9x/ME file share without knowing the entire password
assigned to that share.

Frequently asked questions regarding this vulnerability and the patch
can be found at
http://www.microsoft.com/technet/security/bulletin/fq00-072.asp

Issue
=====
Microsoft Windows 9x/Me provides a password protection feature
referred to as (share level access) for the File and Print Sharing
service. However, due to the way the password feature is currently
implemented, a file share could be compromised, by a malicious user
who used a special client utility, without that user knowing the
entire password required to access that share.

Only share level access permissions are vulnerable. If a Windows 9x
or Windows Me machine were part of a Windows NT domain, user-level
access controls could be enforced on file shares and passwords would
not be needed to allow access to those shares. Windows NT and Windows
2000 machines can only be setup with user-level file share access
controls and are not susceptible to this vulnerability.

Affected Software Versions
==========================
Microsoft Windows 95
Microsoft Windows 98
Microsoft Windows 98 Second Edition
Microsoft Windows Me

Patch Availability
==================
Microsoft Windows 95
Patch available shortly
Microsoft Windows 98 and 98 Second Edition
http://download.microsoft.com/download/win98SE/Update/11958/W98/EN-US/
273991USA8.EXE
Microsoft Windows Me
http://download.microsoft.com/download/winme/Update/11958/WinMe/EN-US/
273991USAM.EXE

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 MS00-072,
http://www.microsoft.com/technet/security/bulletin/fq00-072.asp
Microsoft Knowledge Base article Q273991 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 Nsfocus Security Team (http://www.nsfocus.com) for
reporting this issue to us and working with us to protect customers.

Revisions
October 10, 2000: Bulletin Created.

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Last Updated October 10, 2000
(c) 2000 Microsoft Corporation. All rights reserved. Terms of use.

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