Article ID: 259728 - Last Review: May 12, 2007 - Revision: 8.3 MS00-029: Windows Hangs with Fragmented IP DatagramsThis article was previously published under Q259728 On This PageSYMPTOMS Windows may become sluggish, or may stop responding (hang).
You may also notice that the System process is consuming most or all of the CPU
resources. CAUSE If IP fragments having a particular malformation are sent
to a Windows NT 4.0 or Windows 2000 computer in a continuous stream at a
relatively low data rate, an implementation flaw will cause the computer to
devote most or all of its CPU availability to processing the incoming
fragments. RESOLUTIONWindows 2000To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:260910
(http://support.microsoft.com/kb/260910/EN-US/
)
How to Obtain the Latest Windows 2000 Service Pack
The following file is available for download from the Microsoft
Download Center:Collapse this image  119591
(http://support.microsoft.com/kb/119591/EN-US/
)
How to Obtain Microsoft Support Files from Online Services
Microsoft scanned this file for viruses. Microsoft used the most
current virus-detection software that was available on the date that the file
was posted. The file is stored on security-enhanced servers that help to
prevent any unauthorized changes to the file.
Windows NT 4.0To resolve this problem, obtain the individual package referenced below or obtain the Windows NT 4.0 Security Rollup Package. For additional information on the SRP, click the article number below to view the article in the Microsoft Knowledge Base:299444
(http://support.microsoft.com/kb/299444/EN-US/
)
Post-Windows NT 4.0 Service Pack 6a Security Rollup Package (SRP)
The following files are available for download from the Microsoft
Download Center:
x86: For
additional information about how to download Microsoft Support files, click the
following article number to view the article in the Microsoft Knowledge Base:Collapse this image Alpha: Collapse this image 119591
(http://support.microsoft.com/kb/119591/EN-US/
)
How to Obtain Microsoft Support Files from Online Services Microsoft scanned this file for viruses. Microsoft used the most
current virus-detection software that was available on the date that the file
was posted. The file is stored on secure servers that prevent any unauthorized
changes to the file.The English version of this fix should have the following file attributes or later: Date Time Size File name Platform ------------------------------------------------ 04/27/2000 03:51p 174,512 Tcpip.sys x86 04/27/2000 03:50p 310,864 Tcpip.sys Alpha Windows NT Server 4.0, Terminal Server EditionTo resolve this problem, either obtain the hotfix referenced in this section or the Windows NT Server 4.0, Terminal Server Edition, Security Rollup Package (SRP). For additional information about the SRP, click the article number below to view the article in the Microsoft Knowledge Base:317636
(http://support.microsoft.com/kb/317636/EN-US/
)
Windows NT Server 4.0, Terminal Server Edition, Security Rollup Package
A supported fix is now available from Microsoft, but it is only
intended to correct the problem that is described in this article. Apply it
only to computers that are experiencing this specific problem.To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site: http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS
(http://support.microsoft.com/default.aspx?scid=fh;en-us;cntactms)
NOTE: In special cases, charges that are ordinarily incurred for
support calls may be canceled if a Microsoft Support Professional determines
that a specific update will resolve your problem. The usual support costs will
apply to additional support questions and issues that do not qualify for the
specific update in question.The following files are available for download from the Microsoft Download Center:
x86: For
additional information about how to download Microsoft Support files, click the
following article number to view the article in the Microsoft Knowledge Base:Collapse this image Alpha: Collapse this image 119591
(http://support.microsoft.com/kb/119591/EN-US/
)
How to Obtain Microsoft Support Files from Online Services Microsoft scanned this file for viruses. Microsoft used the most
current virus-detection software that was available on the date that the file
was posted. The file is stored on secure servers that prevent any unauthorized
changes to the file.The English version of this fix should have the following file attributes or later: Date Time Size File name Platform ------------------------------------------------ 04/27/2000 05:47p 173,008 Tcpip.sys x86 04/27/2000 05:35p 308,592 Tcpip.sys Alpha Windows 98This critical update is available as Security Update, May 19, 2000 from the following Microsoft web site:http://support.microsoft.com/ph/1139
(http://support.microsoft.com/ph/1139)
STATUSWindows 2000Microsoft has confirmed that this problem may cause a degree of security vulnerability in Windows 2000. This problem was first corrected in Windows 2000 Service Pack 1.Windows NT 4.0Microsoft has confirmed that this problem may cause a degree of security vulnerability in Windows NT 4.0.Windows 98Microsoft has confirmed that this problem may cause a degree of security vulnerability in Windows 98.Windows 95Microsoft has confirmed that this problem may cause a degree of security vulnerability in Windows 95.MORE INFORMATION For related information about this problem, please visit
the following Microsoft Web site: http://www.microsoft.com/technet/security/bulletin/ms00-029.mspx
(http://www.microsoft.com/technet/security/bulletin/ms00-029.mspx)
For additional security-related information about Microsoft
products, please visit the following Microsoft Web site: http://www.microsoft.com/security/
(http://www.microsoft.com/security/)
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