Two vulnerabilities have been identified in Microsoft Windows, which could be exploited by remote attackers to cause a denial of service. These issues are caused by errors in the Pragmatic General Multicast (PGM) protocol when handling PGM packets with an invalid option length field or fragment option, which could be exploited by a remote anonymous attacker to cause a vulnerable system to become non-responsive.
Note: PGM is only enabled when Microsoft Message Queuing (MSMQ) 3.0 is installed on Windows XP and Windows Server 2003, or when MSMQ 4.0 is installed on Windows Vista and Windows Server 2008 and PGM is specifically enabled. The MSMQ service is not installed by default.
Credits
Vulnerabilities reported by the vendor.
ChangeLog
2008-06-10 : Initial release
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