Article ID: 260205
Article Last Modified on 11/21/2006
APPLIES TO
- Microsoft Internet Information Services 5.0
- Microsoft Internet Information Server 4.0
This article was previously published under Q260205
Notice
We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:
SYMPTOMS
An HTTP GET request with a large number of dots (..) or dot-slashes (././) in the URL can cause high CPU utilization for the Inetinfo process.
CAUSE
IIS determines how to process a URL based on its extension. When there are a large number of dots or dot-slashes, the Inetinfo process consumes all the CPU power for the time that it takes to determine the right extension.
RESOLUTION
Windows 2000
Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to obtain the latest Windows 2000 service pack
Hotfix information
The following files are available for download from the Microsoft Download Center:
![[GRAPHIC: Download]](/wiki/index.php?title=File:Download.gif){kind=small}
English Language Version
Arabic Language Version
Chinese (Simplified) Language Version
Chinese (Traditional) Language Version
Czech Language Version
Danish Language Version
Dutch Language Version
Finnish Language Version
French Language Version
German Language Version
Greek Language Version
Hebrew Language Version
Hungarian Language Version
Italian Language Version
Japanese Language Version
Japanese NEC Language Version
Korean Language Version
Norwegian Language Version
Polish Language Version
Portuguese (Brazilian) Language Version
Portuguese Language Version
Russian Language Version
Spanish Language Version
Swedish Language Version
Turkish Language Version
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 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 prevent any unauthorized changes to the file.
Windows NT 4.0
Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft Windows NT 4.0 that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
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:
US English:
Alpha: Download Myrdot4a.exe now
Chinese (Simplified):
Alpha: Download Myrdot4a.exe now
Chinese (Traditional):
Alpha: Download Myrdot4a.exe now
Dutch:
Alpha: Download Myrdot4a.exe now
French:
Alpha: Download Myrdot4a.exe now
German:
Alpha: Download Myrdot4a.exe now
Japanese:
Alpha: Download Myrdot4a.exe now
Korean:
Alpha: Download Myrdot4a.exe now
Portuguese (Brazil):
Alpha: Download Myrdot4a.exe now
Spanish:
Alpha: Download Myrdot4a.exe now
Swedish:
Alpha: Download Myrdot4a.exe now
Note Debug symbol files are required by an administrator to do both kernel and user mode debugging, providing a method to resolve global variables and function names in the loaded executable file. Click the file names below to download the symbol files.
US English:
Alpha: Download Myrdot4as.exe now
Chinese (Simplified):
Alpha: Download Myrdot4as.exe now
Chinese (Traditional):
Alpha: Download Myrdot4as.exe now
German:
Alpha: Download Myrdot4as.exe now
Japanese:
Alpha: Download Myrdot4as.exe now
Korean:
Alpha: Download Myrdot4as.exe now
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 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 prevent any unauthorized changes to the file.
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table.
Date Time Version Size File name Platform
------------------------------------------------------------
4/24/00 12:11PM 4.2.743.1 228,496 W3svc.dll x86
4/24/00 12:11PM 4.2.743.1 25,360 Sspifilt.dll x86
4/24/00 12:11PM 4.2.743.1 38,256 Ssinc.dll x86
4/24/00 12:10PM 4.2.743.1 185,760 Infocomm.dll x86
Microsoft Windows NT Server version 4.0, Terminal Server Edition
Security Rollup Package information
To resolve this problem, obtain the Windows NT Server 4.0, Terminal Server Edition, Security Rollup Package (SRP). For more information about the SRP, click the following article number to view the article in the Microsoft Knowledge Base:
317636 Windows NT Server 4.0, Terminal Server Edition, Security Rollup Package
STATUS
Windows 2000
Microsoft has confirmed that this is a problem in Internet Information Services 5.0. This problem was first corrected in Windows 2000 Service Pack 1.
Windows NT 4.0
Microsoft has confirmed that this is a problem in Internet Information Server 4.0.
MORE INFORMATION
With this hotfix installed, the dots in the URL are counted. If the number of dots exceeds the default value of 100, you receive an error message. You can also configure this value through the registry. To do this, follow these steps:
- Start Registry Editor.
- Locate the following key in the registry:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\w3svc\Parameters - On the Edit menu, click Add Value, and then add the following registry value:
Value Name: MAXDEPTHDOTS
Data Type: REG_DWORD
Value: 100 - Quit Registry Editor.
For more information about this problem, visit the following Microsoft TechNet Web site:
For more information about security and Microsoft products, visit the following Microsoft TechNet Web site:
For more information about how to install Windows 2000 and Windows 2000 fixes at the same time, click the following article number to view the article in the Microsoft Knowledge Base:
249149 Installing Microsoft Windows 2000 and Windows 2000 hotfixes
Additional query words: security_patch
Keywords: kbdownload kbbug kbfix kbwin2000sp1fix kbgraphxlinkcritical kbqfe kbsecurity kbhotfixserver KB260205
