Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2000.331 -- Microsoft Security Bulletin (MS00-085)
Patch Available for "ActiveX Parameter Validation" Vulnerability
6 November 2000
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: ActiveX
Vendor: Microsoft
Operating System: Windows 2000
Impact: Execute arbitrary code/commands
Access Required: Remote
- --------------------------BEGIN INCLUDED TEXT--------------------
- -----BEGIN PGP SIGNED MESSAGE-----
Microsoft Security Bulletin (MS00-085)
- - --------------------------------------
Patch Available for "ActiveX Parameter Validation" Vulnerability
Originally posted: November 2, 2000
Summary
=======
Microsoft has released a patch that eliminates a security
vulnerability in Microsoft(r) Windows 2000. The vulnerability could
allow enable a malicious user to potentially run code on another
user's machine.
Frequently asked questions regarding this vulnerability and the patch
can be found at
http://www.microsoft.com/technet/security/bulletin/fq00-085.asp
Issue
=====
An ActiveX control that ships as part of Windows 2000 contains an
unchecked buffer. If the control was called from a web page or HTML
mail using a specially-malformed parameter, it would be possible to
cause code to execute on the machine via a buffer overrun. This could
potentially enable a malicious user to take any desire action on the
user's machine, limited only by the permissions of the user.
The vulnerability could only be exploited if ActiveX controls are
enabled in IE, Outlook or Outlook Express. The Security Zones feature
in IE enables customers to limit what web sites can do, and customers
who have used the feature to prevent untrusted sites from invoking
ActiveX controls would be at minimal risk from the web-based attack
scenario. Customers who have applied the Outlook Security Update
would be protected against the mail-borne scenario, since it moves
mail into the Restricted Sites Zone, thereby preventing HTML mails
from invoking ActiveX controls.
Affected Software Versions
==========================
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Professional
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Datacenter Server
Patch Availability
==================
- http://www.microsoft.com/Downloads/Release.asp?ReleaseID=25532
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 MS00-085,
http://www.microsoft.com/technet/security/bulletin/fq00-085.asp
- Microsoft Knowledge Base article Q278511 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 USSR Labs (www.ussrback.com) for reporting
this issue to us and working with us to protect customers.
Revisions
=========
- November 2, 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 November 2, 2000
(c) 2000 Microsoft Corporation. All rights reserved. Terms of use.
- -----BEGIN PGP SIGNATURE-----
Version: PGP Personal Privacy 6.5.3
iQEVAwUBOgJkuo0ZSRQxA/UrAQE/DQgAjuJmk4QastmOeFUnagfE7WdRHb2YsFHZ
MNXi0ghniQfNGASKUJ+jUxSG/OtnKnSko0Dm4l1e0gI9MbshoZ+l04J4A9Yyw2mP
CNmXLLPevSNyBm0sHpmMob0KulZ8/95mk7OIuWWoGYXm8yqRlXrh4ewi8ID3kA94
N9Xp3yM6R5yDPTljn6jsXJ9xdSpNESLuVI9uNR7pDgwggEuEAFd59xpLuk9mAjSQ
CkfS0Ak1WL6wKVzl/fVdnOlkB4PS7YBASWJ2lU7V7QcZZ5XWzVJLc+8r/a0P2WMJ
p3F+H7YbQ4t82sXD1Beh9RPJcNG6yLiMZwHx+vmuY8m4sSGzNtjBMQ==
=j2P2
- -----END PGP SIGNATURE-----
- --------------------------END INCLUDED TEXT--------------------
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to use any or all of this information is
the responsibility of each user or organisation, and should be done so in
accordance with site policies and procedures.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the original authors to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/Information/advisories.html
If you believe that your system has been compromised, contact AusCERT or
your representative in FIRST (Forum of Incident Response and Security
Teams).
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for emergencies.
-----BEGIN PGP SIGNATURE-----
Version: 2.6.3i
Charset: noconv
Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key
iQCVAwUBOlSNLSh9+71yA2DNAQFGGgP/ZDHgn328qpLcm8QLf8P6wW54/pPp0cKM
ADEQAuFCcWSLhsPi/hYRM2fW8vWcRBy0sLL3fHPabgefF+Lb/TFbKORB1PD4EEdr
3yJpaW3x4icwSWbNLZZWb9ObZDBP7Bub7/JhKq3NtpIuMGuFh5T4B4ZryVrzSu5k
wDXSPXHFaOU=
=123m
-----END PGP SIGNATURE-----