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Microsoft PGM vulnerable to remote code execution

Vulnerability Note VU#455516

Original Release Date: 2006-09-12 | Last Revised: 2006-09-13


A buffer overflow vulnerability in Microsoft's Pragmatic General Multicast (PGM) protocol implementation may allow an attacker to execute arbitrary code.


The Pragmatic General Multicast (PGM) protocol is an experimental protocol defined in RFC 3208. Microsoft's implementation of the PGM protocol is the Microsoft Message Queuing Services (MSMQ).

A buffer overflow vulnerability exists in the MSMQ service that may allow a remote, unauthenticated attacker to execute arbitrary code. An attacker may be able to send a specially-crafted message that triggers the overflow when received by a vulnerable system.

Per Microsoft, primarily Windows XP is affected by this vulnerability.


A remote, unauthenticated attacker can run arbitrary code with system privileges.


Microsoft has released an update that addresses this issue.

Do not install unnecessary services
The MSMQ service is not installed by default on Windows XP systems. Do not install this service unless multicast support is required.

Restrict access
MSMQ uses the ports listed in the Message Queuing section of Network Ports Used by Key Microsoft Server Products.

Vendor Information


Microsoft Corporation Affected

Updated:  September 12, 2006



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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


See Microsoft Security Bulletin MS06-052 for more details.

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

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Thanks to Microsoft for supplying information on this vulnerability. Microsoft thanks David Warden of NuPaper Inc. for reporting this vulnerability.

This document was written by Ryan Giobbi.

Other Information

CVE IDs: CVE-2006-3442
Severity Metric: 9.95
Date Public: 2006-09-12
Date First Published: 2006-09-12
Date Last Updated: 2006-09-13 18:26 UTC
Document Revision: 35

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