Security Bulletin MS00-077 (version 2.0)

2001-06-23T00:00:00
ID SECURITYVULNS:DOC:1756
Type securityvulns
Reporter Securityvulns
Modified 2001-06-23T00:00:00

Description


Title: Patch Available for "NetMeeting Desktop Sharing" Vulnerability Released: 13 October 2000 Revised: 21 June 2001 (version 2.0) Software: Netmeeting Impact: Denial of service Bulletin: MS00-077

Microsoft encourages customers to review the Security Bulletin at: http://www.microsoft.com/technet/security/bulletin/MS00-077.asp.


Reason for Revision:

A new variant of the originally reported vulnerability has been found.
The patch has been updated to address both the original and new variants.

Issue:

A remote denial of service vulnerability has been discovered in a component of Microsoft(r) NetMeeting. The denial of service can occur when a malicious client sends a particular malformed string to a port which the NetMeeting service is listening on and with Remote Desktop Sharing enabled.

Although the NetMeeting application is provided as part of Windows(r) 2000 products, the application and affected component is not enabled by default, and customers who have not enabled it would not be at risk from this vulnerability.

Mitigating Factors:

  • NetMeeting is not enabled by default on either Windows 2000 or Windows NT(r) 4.0.
  • The vulnerability could not be used for any broader attack - that is, it could not be used to compromise data within a Netmeeting session or usurp administrative control of a remote desktop session.

Patch Availability:

  • A patch is available to fix this vulnerability. Please read the Security Bulletin http://www.microsoft.com/technet/security/bulletin/ms00-077.asp for information on obtaining this patch.

Acknowledgment:

  • Peter Grundl

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