Issue
By sending fragmented IGMP packets to a Windows 95, 98 or Windows NT 4.0 machine, it is possible to disrupt the normal operation of the machine. This vulnerability primarily affects Windows 95 and 98 machines. Depending on a variety of factors, sending such packets to a Windows 95 or 98 machine may elicit behavior ranging from slow performance to crashing.
Windows NT contains the same vulnerability, but other system mechanisms compensate and make it much more difficult to mount a successful attack.
Affected Software Versions
. Microsoft Windows 95
. Microsoft Windows 98
. Microsoft Windows 98 Second Edition
. Microsoft Windows NT Workstation 4.0
. Microsoft Windows NT Server 4.0
. Microsoft Windows NT Server 4.0, Enterprise Edition
. Microsoft Windows NT Server 4.0, Terminal Server Edition
Vulnerability Identifier: CVE-1999-0918
Patch Availability
. Windows 95:
http://www.microsoft.com/windows95/downloa...int/default.asp . Windows 98:
http://www.microsoft.com/windows98/downloa...int/default.asp . Windows NT Workstation 4.0; Windows NT Server 4.0; Windows NT Server, Enterprise Edition:
http://www.microsoft.com/technet/security/...ailability.mspx . Windows NT Server 4.0, Terminal Server Edition:
http://www.microsoft.com/technet/security/...ailability.mspx Note The Windows 95 and 98 versions of this patch also are available via WindowsUpdate.
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