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Security in .NET: Enforce Code Access Rights with the Common Language Runtime

Posted By:      Posted Date: August 21, 2010    Points: 0   Category :ASP.Net

Component-based software is vulnerable to attack. Large numbers of DLLs that are not tightly controlled are at the heart of the problem. Code access security in the Common Language Runtime of the Microsoft .NET Framework addresses this common security hole. In this model, the CLR acts as the traffic cop to assemblies, keeping track of where they came from and what security restraints should be placed on them. Another way the .NET Framework addresses security is by providing preexisting classes which have built-in security. These are the classes that are invoked in .NET when performing risky operations such as reading and writing files, displaying dialog boxes, and so on. Of course, if a component calls unmanaged code, it can bypass code access security measures. This article covers these and other security issues.

Keith Brown

MSDN Magazine February 2001

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I have tried "SecurityManager.SecurityEnabled =  false" but I m failing to set this property from my application.

I have tried caspol -security off from VS command prompt but from my code I always gets TRUE for SecurityManager.SecurityEnabled.

I m using CLR v2.0

Please let me know how I can disable CAS from my application.



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          I am studying for MCTS - 70-536 , I want more details about caspol utility, its command line options. I have gone through the Link http://msdn.microsoft.com/en-us/library/cb6t8dtz%28VS.80%29.aspx and the MCTS - 70-536 Self Paced Training Kit , 2nd Edition, but I could not find its detailed command line options. Please refer any book or link which can give extensive details about caspol utility.

Thank You



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I have website that uses .NET 3.5 and Ajax tool kit.  The strange thing is it works fine in two environments but it errors with the following error on production site:


Server Error in '/UPS' Application.

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Exception Details: System.InvalidProgramException: Common Language Runtime detected an invalid program.

Source Error:

Line 13:     <aj:ComboBox ID="ComboBox1"  runat="server">
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Line 16:     </aj:MaskedEditExtender>
Line 17:   

Source File: d:\Search\UPS\TestAjax.aspx    Line: 15

Stack Trac

Common Language RunTime Debugging Service

     We have built application in C#. This exe works fine with small Reports. But failed and give following error message whenever we try to run a big reports/processes:

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Any help will be grate appriciated...


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