Microsoft PGM vulnerable to remote code execution

2006-09-1200:00:00

www.kb.cert.org

0.76 High

EPSS

Percentile

98.2%

JSON

Overview

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

Description

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.

Impact

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

Solution

Upgrade
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

455516

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Updated: September 12, 2006

Status

Affected

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.

Addendum

See Microsoft Security Bulletin MS06-052 for more details.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23455516 Feedback>).