Configuration :: Server Trust Level And Twitter Application Interface - Error "System.Security.Permissions.SecurityPermission, Mscorlib"
Oct 14, 2010
There seems to be an issue with the "Trust" level when executing within a "Cloud" environment. In order for the following app to work it needs a trust level of at least "Medium." This web app is developed using VB.NET 3.5, and Visual Studio 2008. The app works perfectly on my local sever but when deployed/published to the "Cloud" it returns the error: System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. I have added all 4 required values, ConsumerKey, ConsumerSecret, OAuthToken, and OAuthTokenSecret to the web.config file in the "appSettings" section of the "configuration"
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If found that by going to [URL] and signing into the account that is using the application, then go to the "Settings" page, go to the bottom of the page and click on the "API" menu option. Once the API page appears you will clik on the button "2", Register An App. On the right side on the new page, you will see a button "View Your Applications." If you have previously registered your app, click this button, If not fill out the appliction for a new app. Now at the View your Applications page, select the app you want to get the authorization keys for where is says "Edit Details". Now click on the button to the right that says, "Application Detail." Here you will find your Consumer Key and your Consumer Secret Key. On the right side of this page you will see the menu option "My Access Token", click it and you will find your oauth_token and your oauth_token_secret keys! Not that you have all the keys, put them in the "appSettings" section of the web.config file. Add "Dim twConn As New TwitterVB2.TwitterAPI" at the top of the page.
I then created a subroutine where I pass in the Tweet:
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This code works great in an enviornment that allows at least a "Medium" trust level. However it appears that many of the "new" hosting envrionments such as "Cloud Hosting" and others do not allow this trust level automatically!However if the trust level is less than "Medium" on your host you will likely receive the error message: "Twitter Returned: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed." If anyone has found a fix for this "Trust Level"
I am using Itext sharp to create a pdf. I am adding an image and I keep getting this error
Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, ersion=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
it is this bit of code that is causing this
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If i comment this out, the PDF builds and no errors are thrown (there is just no image)
I don't understand cause I am am trying to do is read a file.
Error Description while browsing the website under IIS "The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file." Initially I deleted the virtual directory, created again, set the permission to anonymous, set the browse and execute permissions, no solution. Then after doing many trials, I found out the basic problem reading the error "not allowed by the security policy". In web configuration file if we set the security policy to Fully Trusted, then problem solved and application working fine. or Set the trust level to the main configuration file in he "C:WINDOWSMicrosoft.NETFrameworkv2.0.50727CONFIGweb.config"
It's a ?/$%/$%"!$ mess ... My webpage contains a winform user control. That user control send text to LPT1.It acts like an ActiveX. I set my website (on localmachine) as a trust one in IE and set all properties for ActiveX under security tab. The user control is showed under IE but I got a System.Security.Permissions.SecurityPermission when execute it.When I sign my control, IE can't display it ! I registered the dll in the .Net Framework Configuration tool
I am getting following error message while running ASP.net 2003 application. In login page after providing username and pwd i am getting this error. Error: Server Error " " in Application Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in configuraion file. Exception Details:System.Security.SecurityException: Required registry access is not allowed.
Web hosting provider has set the .net trust level as Medium. so report viewer & crystal reports are not working. it required full trust.so is it possible to execute the reports in medium trust? and how?
ReportDoc.Load(Server.MapPath("~/Reports/Proposal.rpt")); DataTable dt = cm.DisplayUserInfo("select * from tblProposal_Master where proposal_id='000006'").Tables[0]; ReportDoc.SetDataSource(dt); CRV.ReportSource = ReportDoc; CRV.DataBind();
"fileUpload" is the FileUpload ASP.NET control. The SaveAs method writes the user uploaded file to a specified location on the server. IT WORKS. That tells me that the ASP.NET process has the proper write permission to write to the file.The next line uses an assembly called PdfSharp which you can use to open PDF files and manipulate them. In this case, the line simply opens up the user uploaded file. That is where the error occurs. WTH?
It works on my production machine. It does not work on my local machine. It USED TO. It was never a problem before.So why would it be fine to WRITE to the server, but trying to open a file give an error? Makes no sense. Googling yields a suggestion to put <trust level="Full" originUrl="" /> under <system.web> in web.config. It does not work.
My web application is composed of several Visual Studio projects. It currently runs fine under high trust level (<trust level = "High" />). When I try to run it under medium trust level, I get this error:
Security Exception
Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.
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.
Get current ASP.NET Trust Level programmatically):
but for C#, and would like to have it for VB.NET. Any chance of someone expert in both VB.NET and C# that can translate this to VB code?
I tried myself and got the following VB.NET code but it generates an error inside my VWD:
Private Function GetCurrentTrustLevel() As AspNetHostingPermissionLevel For Each trustLevel As AspNetHostingPermissionLevel In New _ AspNetHostingPermissionLevel() {AspNetHostingPermissionLevel.Unrestricted, _ AspNetHostingPermissionLevel.High, AspNetHostingPermissionLevel.Medium, _ AspNetHostingPermissionLevel.Low, AspNetHostingPermissionLevel.Minimal} Try New AspNetHostingPermission(trustLevel).Demand() Catch generatedExceptionName As System.Security.SecurityException Continue Try End Try Return trustLevel Next Return AspNetHostingPermissionLevel.None End Function
These parts seems to be wrong:
New AspNetHostingPermission(trustLevel).Demand() and
Continue Try
Obviously, need to be handled by someone fluent in both C# and VB.NET and can spot the errors in VB.NET
My hosting provider just changed the trust level to medium but I cant figureout where to place the configuration on the web.config file! I have spent hours trying to figureout with no luck. here my web.config file
I am trying to use SqlCacheDependency in my web site.I got in touch with my hosting compnay and they said that they support cache but they set the trust level to medium and what I try to do needs full trust level whihch they cannot provide for me.
can someone show me a way or a code samples that use SqlCacheDependency with medium level trust?
the broker is enabled in the hosting sql server
this code raise the error that the hosting providers said that they cannot support in medium level:
I download a webchart.dll file and used it in my application. Everything went right on my local machine. But issue came when i uploaded the file on the server. I am getting trust level medium issue. The assesmbly doesnot run on medium trust level. How can i run assembly in medium trust level.
i wrote all my code on my computer so i had a high trust level, after ftping my site and database to godaddy.com i realized they have a medium level trust enviroment.... i called the tech support and they said they were sorry but they couldnt change it for me... heres my code. any idea how to get it to work in medium level trust? I am trying to create a new directory where all of a users upload goes. The folder is created dynamically when the upload page loads.
I have done project in .NET 1.1. when i am opening that project in vs2005 that through solution explorer and build i am getting error like below.
It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS.
i am configured my local with virtual directory also. i open through local iis it is working fine .but if i run the application then i am getting error above.common thing s i have done are my application has 3 weconfigs in 3 folders and one main config. and i have taken individual authentications and authorisations in main config only. this is not a priblem .actually this problem will occur if we have webconfigs and each have permissions then we will get this right, no problem i seperated.
but why i am getting this error. if i open in vs2008 also i am getting this error,
We had a UAT and Production version of a .NET web application. UAT was taking around 5 seconds to run a particular operation while Prod was taking 35+ seconds.
This even happened when pointing both web applications at the same database and putting them both on the same machine.
The culprit was finally found to be the following entry, which was in the Prod but not UAT web.config
<trust level="High" originUrl="" />
why this would cause such a significant performance degradation??
I am using VS 2008, IIS 7, .NET 3.5 on a vista machine. I created a new web-site using "HTTP", thus to use IIS. The application being created by VS 2008 created the virtual directory.
There are only two objects created initially with a new website "Default.aspx" and "web.config" file. I've made no changes and choose to view in browser and receive the following error:
It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS.
I've removed and reinstalled IIS 7. None of the sites previously created work. I've validated that a duplicate webconfig doesn't exist.
I am about to deploy an ASP .NET application (developed with LINQ-to-SQL). I have taken following precautions: Database access via user with limited access, however, since application is to access the sensitive data, I can't deprive this limited access user from it Database server is not exposed to external network - is hiding behind DMZ and all external ports are blocked I have done thorough security testing of the web-application; SQL Injections, rights management, illegal data access (via post/get data tempering) Application is operating on SSL
1 - I am using ASP .NET authorization API; any recommendation for avoiding session hijacking (in case someone some-how gets to know the session key). Is there are way to change the authentication cookie less prone to threats? Say like, changing it after every request? (I know I am get very conscious about this particular item)
2 - Data in the database is not encrypted. To make things ultra-secure, I am thinking about implementing transparent data encryption. Can someone share his/her experience or a link about implementing data level encryption with SQL Server 2008 along with pros-and-cons?
3 - Recommendation for storing connection string in web.config. Is using integrated security better then using encrypted database connection string?
I have to handle error related to web application. I am not sure how its works. I am thinking that I will add an error page (error.aspx) and in global.asax ,application_onError, I will redirecting the user to error page and that should be enough ! i mean it will handle error automatically.
am connecting online database in my website. whenever forms in idle one shows in server side. after refereshing that error cleared.what is the problem. that like thisA transport-level error has occurred when sending the request to the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.
I am trying to load some dll's into a MEF DirectoryCatalog within an ASP.NET MVC application:
var catalog = new DirectoryCatalog(HttpRuntime.BinDirectory, "Toptable.Mobile.*.dll");
When I run the app through the Cassini web server (i.e. F5) everything runs fine however when hosted in IIS(7) I get the following exception:
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The .NET trust levels for the application are set to "Full" both for the site and globally and I have set the trust level in web.config (system.web/trust) to Full.
when i run my application i got this error like...
Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Security.Policy.PolicyException: Required permissions cannot be acquired.
I'm trying to send an email. My code is fine, but I'm getting a permissions error:
This is a server I'm administering myself, so I have access to the IIS 7 panel. The trouble is I don't know what to set to get mail working. Anyone got any experience of this?
My permissions error:
Access to the path 'c:7c5658db-d4cd-40cf-a686-6e9630e287f9.eml' is denied.
Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.UnauthorizedAccessException: Access to the path 'c:7c5658db-d4cd-40cf-a686-6e9630e287f9.eml' is denied.
ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}ASPNET on IIS 5 or Network Service on IIS 6) that is used if the application is not impersonating. If the application is impersonating via <identity impersonate="true"/>, the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user.
To grant ASP.NET access to a file, right-click the file in Explorer, choose "Properties" and select the Security tab. Click "Add" to add the appropriate user or group. Highlight the ASP.NET account, and check the boxes for the desired access._______________________________
