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TUCoPS :: Windows :: ciacm015.htm

Microsoft Universal Plug and Play Request Vulnerability Affects Win98/Me/XP



Microsoft Universal Plug and Play Request Vulnerability Privacy and Legal Notice

CIAC INFORMATION BULLETIN

M-015: Microsoft Universal Plug and Play Request Vulnerability

[Microsoft Security Bulletin MS01-054]

November 15, 2001 15:00 GMT

PROBLEM: The Universal Plug and Play (UPnP) service allows computers to discover and use network-based devices.
PLATFORM: Windows 98
Windows 98SE
Windows ME
Windows XP
DAMAGE: Invalid UPnP request could result with a variety of effects from slow performance to system failures.
SOLUTION: Install available patch.

VULNERABILITY
ASSESSMENT:
The risk is LOW. Standard firewall practices could be used to protect networks from Internet-based attacks. UPnP is not installed by default.

LINKS:  
  CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/m-015.shtml
  ORIGINAL BULLETIN: http://www.microsoft.com/technet/treeview/default.asp?url=/technet/security/bulletin/MS01-054.asp
  PATCHES: http://www.microsoft.com/Downloads/Release.asp?ReleaseID=33592 http://download.microsoft.com/download/winme/Update/21388/WinMe/ENUS/311311USAM.EXE http://www.microsoft.com/Windowsupdate

[***** Start Microsoft Security Bulletin MS01-054 *****]



Invalid Universal Plug and Play Request can Disrupt System Operation

Originally posted: November 01, 2001

Updated: November 13, 2001



Summary

Who should read this bulletin: Customers using Microsoft® Windows® ME or XP, or who 

have installed the Windows XP Internet Connection Sharing client on Windows 98 or 

98SE. 



Impact of vulnerability: Denial of service 



Maximum Severity Rating: Low 



Recommendation: Windows XP customers should apply the Critical Update listed below in 

Patch Availability, as it contains fixes for a number of issues, including this one. 

Customers using Windows 98, 98SE or ME should apply the patch if the Universal Plug 

and Play service is installed and running. 



Affected Software: 



Microsoft Windows 98 

Microsoft Windows 98SE 

Microsoft Windows ME 

Microsoft Windows XP 



Note: Windows 98 and 98SE are only affected if the Internet Connection Sharing that 

ships with Windows XP has been installed on the machine. 







Technical details

Technical description: 





On November 08, 2001 Microsoft discovered that the Windows ME patch failed to properly 

register the upnp.dll. On November 13, 2001, Microsoft released a corrected version of 

the Windows ME patch. Microsoft recommends that customers who installed the original 

Windows ME patch download and install the new one. Customers using other systems do 

not need to take any additional action, as only the Windows ME patch contained the 

error. 



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:

General: 



Standard firewalling practices (specifically, blocking ports 1900 and 5000) could be 

used to protect corporate networks from Internet-based attacks. 



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. 



Windows ME: 

Windows ME provides native UPnP support, but it is neither installed nor running by 

default. (However, some OEMs do configure pre-built systems with the service installed 

and running). 



Windows XP: 

Internet Connection Firewall, which runs by default, would impede an attacker's 

ability to locate and attack the system. 



Severity Rating:  Internet Servers Intranet Servers Client Systems 

Windows 98 None None Low 

Windows 98SE None None Low 

Windows ME None None Low 

Windows XP None None Low 



The above assessment is based on the types of systems affected by the vulnerability, 

their typical deployment patterns, and the effect that exploiting the vulnerability 

would have on them. The vulnerability only affects client operating systems on which 

the UPnP service is running, and poses a denial of service vulnerability at worst. 





Vulnerability identifier: CAN-2001-0721 



Tested Versions:

Microsoft tested Windows ME, Windows NT 4.0, Windows 2000 and Windows XP, and the UPnP 

service that can be installed on Windows 98 and 98SE, to assess whether they are 

affected by these vulnerabilities. Previous versions are no longer supported, and may 

or may not be affected by these vulnerabilities.







Patch availability

Download locations for this patch 



Microsoft 98 and 98SE: 

http://www.microsoft.com/Downloads/Release.asp?ReleaseID=33592



Microsoft ME: 

http://download.microsoft.com/download/winme/Update/21388/WinMe/EN-US/311311USAM.EXE

 

Microsoft XP: 

This issue is eliminated via the update titled "Windows XP Update Package, October 25, 

2001", at http://www.microsoft.com/Windowsupdate 



 

Additional information about this patch



Installation platforms: 



The patch for Windows 98 and 98SE can be installed on any Windows 98 or 98SE system on 

which the Windows XP Internet Connection Sharing client has been installed. 



The patch for Windows ME can be installed on systems running Windows ME Gold. 



The patch for Windows XP can be installed on systems running Windows XP Gold. 





Inclusion in future service packs:





No future service packs are planned for Windows 98, 98SE or ME. 



The fix for this issue will be included in Windows XP Service Pack 1. 





Reboot needed: Yes 





Superseded patches: None. 



Verifying patch installation:

Windows 98 and 98SE: 



To verify that the patch has been installed on the machine, select Start, then Run, 

then run the QFECheck utility. If the patch is installed, "Windows 98 Q309521 Update" 

will be listed among the installed patches.

 

To verify the individual files, use the file manifest provided in Knowledge Base 

article Q309521. 



Windows ME: 

To verify that the patch has been installed on the machine, select Start, then Run, 

then run the QFECheck utility. If the patch is installed, "Windows Millennium Edition 

Q311311 Update" will be listed among the installed patches. 



To verify the individual files, use the file manifest provided in Knowledge Base 

article Q311311. 



Windows XP: 

To verify that the patch has been installed on the machine, confirm that the following 

registry key has been created on the machine:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP\SP1\q309521. 



To verify the individual files, use the date/time and version information provided in 

the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP\SP1\q309521\Filelist.



 

Caveats:

None 



Localization:





Localized versions of the patches for Windows 98, 98SE and ME are under development, 

and will be available via WindowsUpdate shortly. German and Japanese versions are 

available for download today, as discussed in Knowledge Base article Q311311. 

Localized versions of the Windows XP patch are available from WindowsUpdate. 





Obtaining other security patches: 

Patches for other security issues are available from the following locations: 



Security patches are available from the Microsoft Download Center, and can be most 

easily found by doing a keyword search for "security_patch". 



Patches for consumer platforms are available from the WindowsUpdate web site 



All patches available via WindowsUpdate also are available in a redistributable form 

from the WindowsUpdate Corporate site. 





Other information: 



Acknowledgments

Microsoft thanks 'Ken' from FTU for reporting this issue to us and working with us to 

protect customers. 





Support: 



Microsoft Knowledge Base article Q311311, and Q309521 discusses this issue and will be 

available approximately 24 hours after the release of this bulletin. Knowledge Base 

articles can be found on the Microsoft Online Support web site.

 

Technical support is available from Microsoft Product Support Services. There is no 

charge for support calls associated with security patches. 



Security Resources: The Microsoft TechNet Security Web Site provides additional 

information about security in Microsoft products. 



Disclaimer: 

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. 





Revisions: 





V1.0 (November 01, 2001): Bulletin Created. 



V2.0 (November 08,2001): Bulletin updated to reflect removal of WindowsME patch after 

a problem was found with it. 



V2.5 (November 13, 2001): Bulletin updated to reflect new patch for WindowsME. 



[***** End Microsoft Security Bulletin MS01-054 *****]


CIAC wishes to acknowledge the contributions of Microsoft for the information contained in this bulletin.
CIAC services are available to DOE, DOE Contractors, and the NIH. CIAC can be contacted at:

    Voice:          +1 925-422-8193 (7 x 24)

    FAX:            +1 925-423-8002

    STU-III:        +1 925-423-2604

    E-mail:          ciac@llnl.gov

    World Wide Web:  http://www.ciac.org/

                     http://ciac.llnl.gov

                     (same machine -- either one will work)

    Anonymous FTP:   ftp.ciac.org

                     ciac.llnl.gov

                     (same machine -- either one will work)


This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes.
UCRL-MI-119788
[Privacy and Legal Notice]


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