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Microsoft Security Bulletin (MS00-068)
- --------------------------------------

Patch Available for "OCX Attachment" Vulnerability
Originally posted: September 26, 2000

Summary
=======
Microsoft has released a patch that eliminates a security
vulnerability in Microsoft(r) Windows Media Player (WMP) 7 but
primarily affects e-mail applications. The net effect of the
vulnerability is that it could enable a malicious user to create an
e-mail that, when closed after being read, could cause the e-mail
application to fail.

Frequently asked questions regarding this vulnerability and the patch
can be found at
http://www.microsoft.com/technet/security/bulletin/fq00-068.asp

Issue
=====
OCX controls are containers that can hold multiple ActiveX controls.
A particular OCX control, associated with Windows Media Player, could
be used in a denial of service attack against RTF-enabled e-mail
clients such as Outlook and Outlook Express. If the affected control
were programmatically embedded into an RTF mail and then sent to
another user, the user's mail client would fail when he closed the
mail.
The vulnerability would not cause any lasting effects. The user could
resume normal operation by restarting the mail client and deleting
the affected mail.

Affected Software Versions
===========================
 - Microsoft Windows Media Player 7

Patch Availability
==================
 - Microsoft Windows Media Player 7
   http://www.microsoft.com/Downloads/Release.asp?ReleaseID=24421

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 MS00-068,
   http://www.microsoft.com/technet/security/bulletin/fq00-068.asp
 - Microsoft Knowledge Base article Q274303 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 Luciano Martins of USSR Labs (www.ussrback.com) for
reporting this issue to us and working with us to protect customers.

Revisions
=========
September 26, 2000: Bulletin Created.

- -----------------------------------------------------------------

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THE FOREGOING LIMITATION MAY NOT APPLY.

Last Updated September 26, 2000
(c) 2000 Microsoft Corporation. All rights reserved. Terms of use.

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