Security :: "Request For The Permission Of Type 'System.Security.Permissions.FileIOPermission" Error?
Feb 22, 2011
Here is my code
[Code]....
"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.
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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
[Code]....
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.
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[code]....
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Jul 12, 2010
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[Code]....
:: REMOVED FOR SIMPLICITY :: Stack Trace:
[Code]....
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[Code]....
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[Code]....
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[Code]....
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I got the error
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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.
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Stack Trace:
[PolicyException: Required permissions cannot be acquired.]
System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet& denied, Boolean checkExecutionPermission) +7602199
System.Security.SecurityManager.ResolvePolicy(Evidence evidence, PermissionSet reqdPset, PermissionSet optPset, PermissionSet denyPset, PermissionSet& denied, Int32& securitySpecialFlags, Boolean checkExecutionPermission) +57
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HRESULT: 0x80131417)]
System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +0
System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +43
System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +127
System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +142
System.Reflection.Assembly.Load(String assemblyString) +28
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +46
[ConfigurationErrorsException: Could not load file or assembly 'Infragistics2.WebUI.UltraWebListbar.v8.3, Version=8.3.20083.1009, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb' or one of its dependencies. Failed to grant minimum permission requests. (Exception
from HRESULT: 0x80131417)]
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +613
System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +203
System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +105
System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +178
System.Web.Compilation.BuildProvidersCompiler..ctor(VirtualPath configPath, Boolean supportLocalization, String outputAssemblyName) +54
System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) +229
System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) +261
System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) +101
System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +126
System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +62
System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +33
System.Web.UI.PageHandlerFactory.System.Web.IHttpHandlerFactory2.GetHandler(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +40
System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) +160
System.Web.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +93
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155
The website has a separate application pool defined for it running under the Network Service account. I have checked the settings for the virtual directory for the application but nothing seems wrong. I have tried defining the trust level in web.config to full trust but this does not fix the issue. I have looked into defining the trust level for the application through the machine.config file but I am unsure of how to proceed with this.
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Dec 27, 2010
We use a build tool, TeamCity to do our builds. I have a directory locally with javascript files that works fine, but when its built and pushed to our test server and I try to get to any files in the directory I get: 401 - Unauthorized: Access is denied due to invalid credentials.
I've changed permissions several time on the server (2008/IIS 7) and still the problem persists. I have other directories that have javascripts and when I put the path into the browser for them I get the source.
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Jun 18, 2010
I wrote an asp.net application that I'm trying to run on a godaddy domain I bought. I need to read a file in a folder that I did not give read access to so that your average user cannot see in the informaion in that folder. I assumed that the asp.net program would have the same credentials as myself because server-side code. Turns out I am wrong. When I go to use the asp.net application it throws an access denied error saying that the ASP.NET user account has to be given permissions to access the folder.
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Here is the code I found:
[Code]....
(of course I filled in the username and password with the correct info)
When I went to use it again it threw this error:
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Oct 13, 2010
There appears to be a recent issue with how CreateDirectory resolves FileIOPermission that is causing issues on our server.
Reading through some similar posts on the issue there is a lot of misinformation being given out, so I am hoping to get some kind of clarification.
Given the following setup:
1. Windows Server 2003 SP2 running IIS6 with latest version of .NET Framework 3.5 SP1 fully patched
2. A web site created under IIS6 running under Medium Trust and with the Network Service user being given Full Control over the virtual directory.
3. Running System.IO.Directory.CreateDirectory with the following code:
System.IO.Directory.CreateDirectory(Server.MapPath("~/testfolder"))
4. Fails with:
[Code]....
It appears CreateDirectory is breaking the permissions somehow, as the medium trust rules are as follows:
<IPermission version="1" Read="$AppDir$" Write="$AppDir$" Append="$AppDir$" PathDiscovery="$AppDir$"/>
These rules all point to being able to create directories within the virtual directory/application folder. In fact I am certain this has worked in the past, but recently has stopped working.
Note that this is not an NTFS permissions issue, files can be written,read and deleted in the virtual directory, only CreateDirectory is restricted somehow.
So what is going on, has a recent security update changed this functionality so that Medium Trust no longer has the ability to create directories?
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Apr 5, 2010
I'm getting the error
"System.Security.SecurityException: Request for the permission of type 'System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed."
When trying to access my simply aspx form on our local network. It works fine when debugging using Microsoft Visual studio 2008 however, when I deploy the aspx form on IIS 7.0 I get the error above. The form was working fine until I added a ajax calendar extender. I've also reviewed other posts relating to this one, such as changing<trust level="Full"> with no avail. I have listed a portion of my web.config file below.
<system.web>
<trust level="Full" originUrl=""/>
<compilation debug="false">
<assemblies>
<add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
[Code]....
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Jun 30, 2010
I have implemented rights based security as I describe here: http://forums.asp.net/p/1380280/2916291.aspxThis has been working well for awhile now, but I am moving the site to IIS 7 and encountering problems. I am able to reach the login screen for my app - but upon login get this error: "Unable to cast object of type 'System.Web.Security.RolePrincipal' to type 'RightsLib.RightPrincipal'."As described in the linked post, I have a "RightsLib.dll" that contains the relevant classes like "RightsHttpModule.cs", "RightPrincipal.cs" etc...My app no longer seems to be able to work with RightsLib.dll. RightsLib.dll resides in the bin directory of my app, and I have a reference to it in my project.me what I'm doing wrong, or what has changed to affect this in IIS 7?The only relevant entry in Web.config I'm aware of.
[Code]....
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Jan 3, 2010
I have been using Grid View sorting with images already but this case is slightly different.
I was going through the tutorial here [URL] pages there is a grid and i tried to implement sorting with images to this grid but i failed.
Here is my c# code
[Code]....
aspx page
[Code]....
The problem here is the datasource of Gridview is of type System.Web.Security.MembershipUserCollection
I am not sure how to convert or assign System.Web.Security.MembershipUserCollection datasource to a dataset or datatable/DataView and sort it.
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Oct 21, 2010
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Exception: System.TypeLoadException
Message: Could not load type 'System.Security.Authentication.ExtendedProtection.ChannelBinding' from assembly 'System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
StackTrace: at System.Web.Hosting.IIS7WorkerRequest.Dispose()
at System.Web.Hosting.PipelineRuntime.DisposeHandlerPrivate(HttpContext context)
at System.Web.HttpRuntime.FinishRequestNotification(IIS7WorkerRequest wr, HttpContext context, RequestNotificationStatus& status)
at System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context)
at System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)
at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags)
Faulting application w3wp.exe, version 7.0.6002.18005, time stamp 0x49e023cf, faulting module kernel32.dll, version 6.0.6002.18005, time stamp 0x49e037dd
it's on SP2 already
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Feb 15, 2010
I am writing an internal web app for a company who wont to use their existing Active Directory Logins (rather than a seperate SQL Database User Login Table).
To do this I have done the following
web.config
<authentication mode="Windows">
<identity impersonate="true"/>
<authorization>
<deny users="?"/>
<!-- Allow Public Users to Access -->
<allow users="*"/>
</authorization>
<roleManager enabled="true"
defaultProvider="AspNetWindowsTokenRoleProvider"/>
End
This seems to work on my localhost but I have a couple of questions for you guys.
1) How does this process know which active directory to authenticate against? I know in code you can do
LdapAuthentication adAuth = new LdapAuthentication("LDAP://Server");
But there seems to be no way to do this in the web.config (I'm guessing it will just use the active directory on current machine it's running on?). Is there away to specify which active directory I'd like it to authenticate against?
2) If a user tries to access this remotely (i.e. not on their native windows account) what will happen, will it just default to a login form or just throw a "Permission Denied" error?
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I am doing some testing and want to find out best practice for creating a new user to assign to an appPool. I know that the default ASPNET account, on IIS 6.0, is very low permissions. For experienced folks, what are the bare permissions required to grant this new user? Yes, I am aware that various NTFS rights are required for different operations, such as reading outside of the application path, writing to the NTFS share, etc. I am just looking at a base install.
Dino Esposito wrote in Chapter 15 of Programming Microsoft ASP.NET 2.0 - Core Reference that the following directories would need the respective permissions:
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Mar 11, 2010
I've create a custom membership provider
[Code]....
and on web.cofig file
[Code]....
and I tried also
[Code]....
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