exploit the possibilities

ms01-054

ms01-054
Posted Nov 2, 2001

Microsoft Security Advisory MS01-054 - A vulnerability in the UPnP service which is enabled by default on Windows ME and XP allows for a remote denial of service attack causing slow performance to system failure. This vulnerability is exploited over TCP ports 1900 and 5000. Microsoft FAQ on this issue available here.

tags | remote, denial of service, tcp
systems | windows, me
MD5 | 503b32fc1a9a46e28d598488f16fb840

ms01-054

Change Mirror Download
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- -
- ----------------------------------------------------------------------
Title: Invalid Universal Plug and Play Request can Disrupt
System Operation
Date: 01 November 2001
Software: Windows 98, Windows ME, Windows XP
Impact: Denial of Service
Bulletin: MS01-054

Microsoft encourages customers to review the Security Bulletin at:
http://www.microsoft.com/technet/security/bulletin/MS01-054.asp.
- -
- ----------------------------------------------------------------------

Issue:
======
The Universal Plug and Play (UPnP) service allows computers to
discover and use network-based devices. Windows ME and XP include
native UPnP services; Windows 98 and 98SE do not include a native
UPnP service, but one can be installed via the Internet Connection
Sharing client that ships with Windows XP.

A vulnerability results because the UPnP service does not correctly
handle certain types of invalid UPnP requests. On Windows 98, 98SE,
and ME systems, receiving such a request could cause a variety of
effects ranging from slow performance to system failure. On
Windows XP, the effect is less serious as the flaw consists of a
memory leak. Each time a Windows XP system received such a request,
a small amount of system memory would become unavailable;
if repeated many times, it could deplete system resources to
the point where performance slowed or stopped altogether.

Mitigating Factors:
====================

- Standard firewalling practices (specifically, blocking ports 1900
and 5000) could be used to protect corporate networks from
Internet-based attacks.

- On Windows 98 and 98SE, there is no native UPnP support for these
systems. Windows 98 and 98SE systems would only be affected if
the Internet Connection Sharing Client from Windows XP had been
installed on the system.

- On Windows ME, UPnP supportis neither installed nor running by
default. (However, some OEMs do configure pre-built systems
with the service installed and running).

- On Windows XP, the Internet Connection Firewall, which runs
by default, would impede an attacker's ability to locate and
attack the system.

Patch Availability:
===================
- A patch is available to fix this vulnerability. Please read the
Security Bulletin at
http://www.microsoft.com/technet/security/bulletin/ms01-054.asp
for information on obtaining this patch.

Acknowledgment:
===============
- 'Ken' from FTU (franklin_tech_unlimited@yahoo.com)

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

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.

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