Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2000.232 -- Microsoft Security Bulletin (MS00-062)
Patch Available for "Local Security Policy Corruption" Vulnerability
29 August 2000
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Windows 2000
Vendor: Microsoft
Operating System: Windows 2000
Platform: N/A
Impact: Denial of Service
Access Required: Remote
- --------------------------BEGIN INCLUDED TEXT--------------------
- -----BEGIN PGP SIGNED MESSAGE-----
Microsoft Security Bulletin (MS00-062)
- - --------------------------------------
Patch Available for "Local Security Policy Corruption" Vulnerability
Originally posted: August 28, 2000
Summary
=======
Microsoft has released a patch that eliminates a security
vulnerability in Microsoft(r) Windows(r) 2000. The vulnerability
could allow a malicious user to disrupt normal operation of an
affected machine, and potentially of an entire network. Customers
who have applied Windows 2000 Service Pack 1 are already protected
against the vulnerability and do not need to take any further
action.
Frequently asked questions regarding this vulnerability and the
patch can be found at
http://www.microsoft.com/technet/security/bulletin/fq00-062.asp
Issue
=====
This vulnerability could allow a malicious user to corrupt parts of a
Windows 2000 system's local security policy, with the effect of
disrupting domain membership and trust relationship information. If a
workstation or member server were attacked via this vulnerability,
it would effectively remove the machine from the domain; if a domain
controller were attacked, it could no longer process domain logon
requests. Recovering from such an attack would likely require that a
known-working configuration be restored from backup.
It would not be necessary to be an authenticated domain member in
order to mount an attack via this vulnerability. Any user who could
establish a RPC connection with an affected machine and send the
proper command sequence to it could exploit the vulnerability. If
the malicious user were an intranet user, he could likely attack any
machine within the network; if the malicious user were on the
Internet, he could likely attack only machines on the network edge
that allow RPC connections.
The vulnerability was discovered by an internal security team at
Microsoft, and, to the best of our knowledge, it is not known "in
the wild". Nevertheless, because of the serious consequences of the
vulnerability, Microsoft encourages all Windows 2000 users to either
apply the patch or Windows 2000 Service Pack 1 immediately.
Affected Software Versions
==========================
- Microsoft Windows 2000 Professional
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Advanced Server
Note: Microsoft Windows 2000 Datacenter Server is not affected by
this vulnerability.
Patch Availability
==================
- http://www.microsoft.com/Downloads/Release.asp?ReleaseID=24019
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 MS00-062,
http://www.microsoft.com/technet/security/bulletin/fq00-062.asp
- Microsoft Knowledge Base article Q269609 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.
Revisions
=========
- August 28, 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 August 28, 2000
(c) 2000 Microsoft Corporation. All rights reserved. Terms of use
- -----BEGIN PGP SIGNATURE-----
Version: PGP Personal Privacy 6.5.3
iQEVAwUBOarHGI0ZSRQxA/UrAQFDYwf/ci8ATl8EuuVeMEOw4dDdNmObFHopJUaC
I/+Tqu2l2JKQxhj7foNNNt3uaXVqIuGj8QcV1VVGt+fXnuPPP6F7k3Ye+/k3OCDW
6jxZc3OmBIm2GM2Ak/ukyVmaGGbY0mzAlruSTriSf1xVX/c5vuxK6ogprDriTVJe
WYO0CmLAhC2hF7UTT/O8R9CjC69MbkpA+DPY82XGu6z+BX0vyM/m8Y2lZZGOxzLy
3uk/hCC7wmOz7qum+Z8jXoPOrm8uObZWc9SZG9adoXChUFdWZ7XmE8gPuXqHYep1
81YQvIzmJhI4wNr1NZa8PrcVUyey9Cct+nD/eKJUR5sY+6yH5hfMEQ==
=RjD4
- -----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
iQCVAwUBOcd24ih9+71yA2DNAQEwYQP/dZWtAXNFVh82IvTXHMT6cv3W6scxkXGZ
IFZZ1D3WMoUtQV8voLt36VyAGv5/0+N0vzBggqY2ChAkGEbQhuD0zqZOyBHwM9+m
vSgPIsrvX0/bDAcr+9Q2cmxl50QPjACTyc7EDNQzozAe8VXnTyFfKwFLFHYLZie+
GhQ+ukEjqtI=
=gjD+
-----END PGP SIGNATURE-----