Title: Microsoft Windows PGM Invalid Fragment Remote Denial Of Service Vulnerability
Severity: MODERATE
Description:
Microsoft Pragmatic General Multicast (PGM) is a multicast protocol to detect, report on, and request retransmission of incomplete or lost inbound data.
Microsoft Windows is prone to a remote denial-of-service vulnerability because of the way that it handles malformed PGM packets. Specifically, code that handles the parsing of PGM traffic fails to properly handle PGM packets that contain an invalid fragment option.
To leverage this issue, attackers submit specially crafted PGM traffic to vulnerable computers.
Attackers can exploit this issue to cause affected computers to stop responding until all the malformed packets have been processed. Successful attacks will deny service to legitimate users.
On computers running Windows XP and Windows Server 2003, PGM is enabled only when Microsoft Message Queuing (MSMQ) 3.0 is installed. The MSMQ service is not installed by default.
On computers running Windows Vista or Windows Server 2008, PGM is enabled only when Microsoft Message Queuing (MSMQ) 4.0 is installed and when PGM is specifically enabled. The MSMQ service is not installed by default. When MSMQ is installed, PGM processing is not enabled by default.
Affected Products:
- Microsoft Windows Server 2003 Datacenter Edition Itanium SP1
- Microsoft Windows Server 2003 Datacenter Edition SP1
- Microsoft Windows Server 2003 Datacenter x64 Edition
- Microsoft Windows Server 2003 Datacenter x64 Edition SP2
- Microsoft Windows Server 2003 Enterprise Edition Itanium SP1
- Microsoft Windows Server 2003 Enterprise Edition SP1
- Microsoft Windows Server 2003 Enterprise x64 Edition
- Microsoft Windows Server 2003 Enterprise x64 Edition SP2
- Microsoft Windows Server 2003 Itanium SP1
- Microsoft Windows Server 2003 Itanium SP2
- Microsoft Windows Server 2003 SP1
- Microsoft Windows Server 2003 SP2
- Microsoft Windows Server 2003 Standard Edition SP1
- Microsoft Windows Server 2003 Standard Edition SP2
- Microsoft Windows Server 2003 Standard x64 Edition
- Microsoft Windows Server 2003 Web Edition SP1
- Microsoft Windows Server 2003 Web Edition SP2
- Microsoft Windows Server 2003 x64 SP1
- Microsoft Windows Server 2003 x64 SP2
- Microsoft Windows Server 2008 for 32-bit Systems
- Microsoft Windows Server 2008 for Itanium-based Systems
- Microsoft Windows Server 2008 for x64-based Systems
- Microsoft Windows Vista
- Microsoft Windows Vista Business
- Microsoft Windows Vista Business 64-bit edition
- Microsoft Windows Vista Business 64-bit edition SP1
- Microsoft Windows Vista Business SP1
- Microsoft Windows Vista Enterprise
- Microsoft Windows Vista Enterprise 64-bit edition
- Microsoft Windows Vista Enterprise 64-bit edition SP1
- Microsoft Windows Vista Enterprise SP1
- Microsoft Windows Vista Home Basic
- Microsoft Windows Vista Home Basic 64-bit edition
- Microsoft Windows Vista Home Basic 64-bit edition SP1
- Microsoft Windows Vista Home Basic SP1
- Microsoft Windows Vista Home Premium
- Microsoft Windows Vista Home Premium 64-bit edition
- Microsoft Windows Vista Home Premium 64-bit edition SP1
- Microsoft Windows Vista Home Premium SP1
- Microsoft Windows Vista SP1
- Microsoft Windows Vista Ultimate
- Microsoft Windows Vista Ultimate 64-bit edition
- Microsoft Windows Vista Ultimate 64-bit edition SP1
- Microsoft Windows Vista Ultimate SP1
- Microsoft Windows Vista x64 Edition
- Microsoft Windows Vista x64 Edition SP1
- Microsoft Windows XP Home SP2
- Microsoft Windows XP Home SP3
- Microsoft Windows XP Media Center Edition SP2
- Microsoft Windows XP Media Center Edition SP3
- Microsoft Windows XP Professional SP2
- Microsoft Windows XP Professional SP3
- Microsoft Windows XP Professional x64 Edition
- Microsoft Windows XP Professional x64 Edition SP2
References:
- Microsoft: Microsoft Security Bulletin MS08-036
- Microsoft: Microsoft Windows Homepage
- Microsoft Security Vulnerability Research & Defense: MS08-036: PGM? What is PGM?
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