Enabling SSL in ASP.NET MVC 5 app results in OpenIdConnectProtocolValidator issue

Question

I have an ASP.NET MVC 5 app that authenticates against Azure Active Directory. I wanted to enable SSL on it across the app. and hence leveraged global filters as follows:

public class FilterConfig
{
    /// <summary>
    /// Registers the global filters.
    /// </summary>
    /// <param name="filters">The filters.</param>
    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new RequireHttpsAttribute());
    }
}

After this I also set 'Enable SSL' in the project's properties to true. This gave me the following SSL URL -> https://localhost:34567. I updated the project to have this in its IIS Express path under the 'Web Tab' under Servers in 'Project URL'. However on running the site I run in to the following error:

IDX10311: RequireNonce is 'true' (default) but validationContext.Nonce is null. A nonce cannot be validated. If you don't need to check the nonce, set OpenIdConnectProtocolValidator.RequireNonce to 'false'.

I have auth. enabled on the site. I use Azure Active directory.

The security code is as follows:

app.UseOpenIdConnectAuthentication(
            new OpenIdConnectAuthenticationOptions
            {
                ClientId = clientId,
                Authority = authority,
                PostLogoutRedirectUri = postLogoutRedirectUri                    
            });

        app.UseWindowsAzureActiveDirectoryBearerAuthentication(
            new WindowsAzureActiveDirectoryBearerAuthenticationOptions
            {
                Audience = audience,
                Tenant = tenant,      
            });

The auth. values are being read from the web.config and are as follows:

<add key="ida:ClientId" value="<some_guid>" />
<add key="ida:Audience" value="https://localhost:34567/" />
<add key="ida:AADInstance" value="https://login.windows.net/{0}" />
<add key="ida:Tenant" value="microsoft.onmicrosoft.com" />
<add key="ida:PostLogoutRedirectUri" value="https://localhost:34567/" />

I tried setting RequireNonce to false as directed in the error message as follows:

ProtocolValidator = new OpenIdConnectProtocolValidator
                {
                    RequireNonce = false
                }

But this just resulted in an invalid request error.

Could someone help me understand what the problem is here? Everything worked great until SSL was enabled.

Answer 1

You can ignore exceptions if the error message starts with OICE_20004 or contains IDX10311. Note: do it on your own risk.

Notifications = new OpenIdConnectAuthenticationNotifications()
{
    RedirectToIdentityProvider = (context) =>
    {
        // Ensure the URI is picked up dynamically from the request;
        string appBaseUrl = context.Request.Scheme + "://" + context.Request.Host + context.Request.PathBase + context.Request.Uri.PathAndQuery;
        context.ProtocolMessage.RedirectUri = context.Request.Scheme + "://" + context.Request.Host + context.Request.PathBase + context.Request.Uri.PathAndQuery;
        context.ProtocolMessage.PostLogoutRedirectUri = appBaseUrl;
        return Task.FromResult(0);
    },
    AuthenticationFailed = (context) =>
    {
        if (context.Exception.Message.StartsWith("OICE_20004") || context.Exception.Message.Contains("IDX10311"))
        {
            context.SkipToNextMiddleware();
            return Task.FromResult(0);
        }
        return Task.FromResult(0);
    },
}