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Microsoft Windows TCP/IP fails to properly validate IGMP packets

Vulnerability Note VU#839284

Original Release Date: 2006-02-14 | Last Revised: 2006-02-19

Overview

Microsoft Windows implementations of the TCP/IP protocol fail to properly validate IGMP packets, leading to a denial-of-service condition.

Description

TCP and IGMP

The Transmission Control Protocol (TCP) is defined in RFC 793 as a means to provide reliable host-to-host transmission between hosts in a packet-switched computer network. The Internet Group Management Protocol version 3 (IGMPv3) is defined in RFC 3376 as a protocol to help manage multicast connections over the internet.

The Vulnerability

The Microsoft implementation of TCP/IP fails to properly handle specially crafted IGMPv3 packets, possibly leading to a denial-of-service condition. For more information, including a list of vulnerable systems, please refer to Microsoft Security Bulletin MS06-007.

Impact

By sending a specially crafted IGMPv3 packet to a vulnerable system, an unauthenticated, remote attacker could cause that system to stop responding.

Solution

Apply an Update

Microsoft has addressed this issue in Microsoft Security Bulletin MS06-007.

Please see Microsoft Security Bulletin MS06-007 for a list of workarounds to mitigate this vulnerability.

Vendor Information

839284
Expand all

Microsoft Corporation

Updated:  February 14, 2006

Status

  Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Please see http://www.microsoft.com/technet/security/Bulletin/MS06-007.mspx.

If you have feedback, comments, or additional information about this vulnerability, please send us email.


CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A

References

Credit

This vulnerability was reported in Microsoft Security Bulletin MS06-007 . Microsoft credits Douglas Nascimento of Datacom with providing information regarding this issue.

This document was written by Jeff Gennari.

Other Information

CVE IDs: CVE-2006-0021
Severity Metric: 21.00
Date Public: 2006-02-14
Date First Published: 2006-02-14
Date Last Updated: 2006-02-19 13:38 UTC
Document Revision: 19

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