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(841451) - Describes a fix for a problem that occurs when a Content-Type header that is improperly formatted causes the QueryString part of a URL to be decoded incorrectly in ASP.NET.

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Microsoft Knowledge Base Article

This article contents is Microsoft Copyrighted material.
©2005-©2007 Microsoft Corporation. All rights reserved. Terms of Use | Trademarks
Article ID: 841451 - Last Review: April 7, 2006 - Revision: 2.1

FIX: A Content-Type header that is incorrectly formatted causes the QueryString part of the URL to be decoded incorrectly in ASP.NET

View products that this article applies to.

SYMPTOMS

The Microsoft ASP.NET Request.Url property and the Request.QueryString.Get method do not return correct data for a URL. The QueryString bytes are decoded as a Unicode string when they really are a UTF-8 string. Therefore, every two characters or two bytes are replaced with one Unicode character in the URL.
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CAUSE

A Content-Type header that is incorrectly formatted causes the QueryString part of a URL to be decoded incorrectly in ASP.NET. Specifically, this problem occurs when a Content-Type header does not end with a pair of quotation marks.
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RESOLUTION

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 .NET Framework service pack 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:
http://support.microsoft.com/contactus/?ws=support (http://support.microsoft.com/contactus/?ws=support)
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 English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel. 
Date         Time   Version            Size    File name
--------------------------------------------------------------
28-Apr-2004  15:54  1.1.4322.1037     258,048  Aspnet_isapi.dll  
28-Apr-2004  15:54  1.1.4322.1037      20,480  Aspnet_regiis.exe  
28-Apr-2004  15:54  1.1.4322.1037      32,768  Aspnet_state.exe  
28-Apr-2004  15:54  1.1.4322.1037      32,768  Aspnet_wp.exe    
05-Apr-2004  21:39                     33,718  Installpersistsqlstate.sql
05-Apr-2004  21:39                     34,342  Installsqlstate.sql
05-Apr-2004  21:39                     35,243  Installsqlstatetemplate.sql
28-Apr-2004  15:45  1.1.4322.1037      94,208  Perfcounter.dll  
28-Apr-2004  15:49                      8,685  Smartnav.js
29-Apr-2004  16:06  1.1.4322.1037   1,220,608  System.dll       
29-Apr-2004  16:06  1.1.4322.1037     241,664  System.messaging.dll
29-Apr-2004  16:06  1.1.4322.1037     323,584  System.runtime.remoting.dll  
29-Apr-2004  16:06  1.1.4322.1037     131,072  System.runtime.serialization.formatters.soap.dll
29-Apr-2004  16:06  1.1.4322.1037   1,257,472  System.web.dll   
29-Apr-2004  16:06  1.1.4322.1037     819,200  System.web.mobile.dll
29-Apr-2004  16:06  1.1.4322.1037     569,344  System.web.services.dll  
29-Apr-2004  16:06  1.1.4322.1037   1,339,392  System.xml.dll   
28-Apr-2004  15:49                     14,482  Webuivalidation.js
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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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MORE INFORMATION

For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
824684  (http://kbalertz.com/Feedback.aspx?kbNumber=824684/ ) Description of the standard terminology that is used to describe Microsoft software updates
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APPLIES TO
  • Microsoft ASP.NET 1.1
  • Microsoft .NET Framework 1.1
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Keywords: 
kbbug kbfix kbqfe kbwebforms kbappdev kbweb kbwebclasses kbhotfixserver KB841451
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