CODEWITHSUNDEEP
azure-active-directoryaccess-tokenrolesmicrosoft-identity-platform
JakeUT
JakeUT

Reputation: 527

Azure AD roles claim missing in Token

I have an app where the AzureAD login is working fine. However, I would like to identify if the user is in a custom role defined on the App Registration.

I have added my user account to the custom role in the Enterprise Application linked to the App Registration.

The App Registration is set up with ID Token checked.

I have my program.cs with the following code:

builder.Services.AddAuthentication(OpenIdConnectDefaults.AuthenticationScheme)
    .AddMicrosoftIdentityWebApp(builder.Configuration.GetSection("AzureAd"));

builder.Services.Configure<OpenIdConnectOptions>(OpenIdConnectDefaults.AuthenticationScheme, options =>
{
    options.TokenValidationParameters.RoleClaimType = "roles";
});

Yet when look at the User object, it has all my user information but no claim for roles.

Any idea why?

Thanks in advance, Jake.

EDIT: Claims token screenshot (url instead of friendly name for roles, tid, etc.) enter image description here

Upvotes: 1

Views: 4853

Answers (1)

Rukmini
Rukmini

Reputation: 15574

To get the Azure AD role claims in ID token, check the below:

Create App roles in Azure AD Application:

enter image description here

In Enterprise Application, I added the role for a user:

enter image description here

Now, I generated tokens via Postman using below parameters:

https://login.microsoftonline.com/TenantID/oauth2/v2.0/token

client_id:ClientID
scope:ClientID/.default openid
code:code
redirect_uri:https://jwt.ms
grant_type:authorization_code
client_secret:ClientSecret

enter image description here

When I decoded the ID token, roles are displayed successfully:

enter image description here

The role claims will also be displayed in access token:

enter image description here

Now, I tried to sign-in with the user who is not assigned any roles in the application and the role claims did not display in the ID token:

enter image description here

To get Azure AD role claims using ASP.NET Core web app, refer this GitHub blog by aremo-ms.

In your Startup.cs file modify the code like below:


public void ConfigureServices(IServiceCollection services)
{
                       JwtSecurityTokenHandler.DefaultMapInboundClaims = false;
           services.Configure<OpenIdConnectOptions>(OpenIdConnectDefaults.AuthenticationScheme, options =>
            {
                                options.TokenValidationParameters.RoleClaimType = "roles";
            });

                   services.AddAuthorization(options => 
            {
                options.AddPolicy(AuthorizationPolicies.AssignmentToUserReaderRoleRequired, policy => policy.RequireRole(AppRole.UserReaders));
                options.AddPolicy(AuthorizationPolicies.AssignmentToDirectoryViewerRoleRequired, policy => policy.RequireRole(AppRole.DirectoryViewers));
            });
            }

// In code..(Controllers & elsewhere)
[Authorize(Policy = AuthorizationPolicies.AssignmentToDirectoryViewerRoleRequired)]
// or
User.IsInRole("UserReaders"); // In methods

Reference:

Add app roles and get them from a token - Microsoft Entra

Upvotes: 3

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