exploit the possibilities

ms00-075

ms00-075
Posted Oct 15, 2000

Microsoft Security Bulletin (MS00-075) - Microsoft has released a patch that eliminates the "Microsoft VM ActiveX Component" vulnerability in Microsoft virtual machine (Microsoft VM) for Windows 95, 98, Windows Me, Windows NT 4.0, and Windows 2000. If a malicious web site operator coaxes a user into visiting his site, the vulnerability allows him to take any desired action on a visiting user's machine by using ActiveX controls which are marked unsafe for scripting. Microsoft FAQ on this issue available here.

tags | web, activex
systems | windows, 2k, 9x, nt, me
MD5 | f562e92f2e04f1a3989aacaa4838d86f

ms00-075

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----

Microsoft Security Bulletin (MS00-075)
- --------------------------------------

Patch Available for "Microsoft VM ActiveX Component" Vulnerability
Originally posted: October 12, 2000

Summary
=======
Microsoft has released a patch that eliminates a security
vulnerability in Microsoft(r) virtual machine (Microsoft VM). If a
malicious web site operator were able to coax a user into visiting
his site, the vulnerability could allow him to take any desired
action on a visiting user's machine.

Frequently asked questions regarding this vulnerability and the patch
can be found at
http://www.microsoft.com/technet/security/bulletin/fq00-075.asp

Issue
=====
The Microsoft VM is a virtual machine for the Win32(r) operating
environment. It runs atop Microsoft(r) Windows 95, 98, Windows Me,
Windows NT 4.0, or Windows 2000. It ships as part of each operating
system, and also as part of Microsoft Internet Explorer. The version
of the Microsoft VM that ships with Microsoft Internet Explorer 4.x
and Internet Explorer 5.x contains a security vulnerability that
could allow a Java applet, on a malicious web site to take any
desired action on a visiting user's machine.

The Microsoft virtual machine (Microsoft VM) contains functionality
that allows ActiveX controls to be created and manipulated by Java
applications or applets. This functionality is intended to only be
available to stand-alone Java applications or digitally signed
applets. However, this vulnerability allows ActiveX controls to be
created and used from a web page, or from within a HTML based e-mail
message, without requiring a signed applet. If a user visited a
malicious web site that exploited this vulnerability, a Java applet
on one of the web pages could run any desired ActiveX control, even
ones that are marked as unsafe for scripting. This would enable the
malicious web site operator to take any desired action on the user's
machine.

Web sites placed within the Restricted Sites zone in Internet
Explorer will not be able to exploit this vulnerability.

Affected Software Versions
==========================
Versions of the Microsoft VM are identified by build numbers, which
can be determined using the JVIEW tool, as discussed in the FAQ. The
following builds of the Microsoft VM are affected:

- All builds in the 2000 series.
- All builds in the 3100 series.
- All builds in the 3200 series.
- All builds in the 3300 series.

Patch Availability
==================
- 2000-series Microsoft VM customers will be provided with an update
soon.
- 3100-series Microsoft VM customers upgrade to build 3318 or later
from:
http://www.microsoft.com/java/vm/dl_vm40.htm
- 3200-series Microsoft VM customers upgrade to build 3318 or later
from:
http://www.microsoft.com/java/vm/dl_vm40.htm
- 3300-series Microsoft VM customers upgrade to build 3318 or later
from:
http://www.microsoft.com/java/vm/dl_vm40.htm

This fix supersedes the patch supplied in MS00-059

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 MS00-75,
http://www.microsoft.com/technet/security/bulletin/fq00-075.asp
- Microsoft Knowledge Base (KB) article Q275609,
http://www.microsoft.com/technet/support/kb.asp?ID=275609
discusses
this issue in more detail.
- 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
=========
- October 12, 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 October 12, 2000
(c) 2000 Microsoft Corporation. All rights reserved. Terms of use.

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