C# - Are Conditions For Raising "potentially Dangerous Request.Form Value" Errors Dependent On .NET Configuration And Version?

Jul 7, 2010

I'm testing a Tiny_MCE plugin for BlogEngine.NET extension I wrote earlier and I keep receiving the following error message whenever I use my own extension or the extremely popular SyntaxHighlighter extension which both have similar behaviors and both implement Tiny_MCE plugins:

Url :
'http://localhost/admin/Pages/Add_entry.aspx'
Raw Url : /admin/Pages/Add_entry.aspx[code]...

My question is thus: although I receive this error on my local environment (IIS 7.5 ASP.NET 4.0 Integrated App Pool) I receive no error whatsoever on my live environment (IIS 7.5 ASP.NET 3.5 SP1/ 3.0 / 2.0.) Additionally whenever I test the extension using debug mode in Visual Studio 2010 and run the site off of a separate instance I don't receive this error.I'm almost certain that the fact that this issue only occurs on my localhost IIS instance indicates that it's a configuration issue or a behavior specific to ASP.NET 4.0, but I don't know what exactly.

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On a windows 2008 web server, I get the following error whenever posting a form containing html tags in textboxes:

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I am Getting this error

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I'm using a php script to http post some xml files to a .net URL.

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[Update : I have inserted this post in "XML Web Services" section by mistake, so if you are a moderator or Admin, please shift it to "Security" section or any other relevant section]

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I am using Webhandler to upload images to the server. I want to send the folder name so on that folder the images will save. I am using this URI format and got the below error.

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Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack
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[HttpException (0x80004005): A potentially dangerous Request.Path value was detected from the client (?).]
System.Web.HttpRequest.ValidateInputIfRequiredByConfig() +8884233
System.Web.ValidateRequestExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +35
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

Version

Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1

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I'm getting this error below, but it is in Admin pages so it will never be a potentially dangerous request. Is there a way to override it?

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