Microsoft PGM vulnerable to remote code execution

ID VU:455516
Type cert
Reporter CERT
Modified 2006-09-13T00:00:00



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.

Systems Affected

Vendor| Status| Date Notified| Date Updated
Microsoft Corporation| | -| 12 Sep 2006
If you are a vendor and your product is affected, let us know.

CVSS Metrics

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


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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
  • Date Public: 12 Sep 2006
  • Date First Published: 12 Sep 2006
  • Date Last Updated: 13 Sep 2006
  • Severity Metric: 9.95
  • Document Revision: 32