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Set Permissions for the SCIM Managed Identity

After you have published the SCIM microservice app to Azure, you need to run the following PowerShell script to assign several required permissions to the App Service managed identity. Required permissions follow the least-privilege principle and include the following:

Graph API / Permissions name

Access Granted by Permissions

Used By

AuditLog.Read.All

Read audit log data

App Service Managed Identity

Group.Read.All

Read group data

App Service Managed Identity

GroupMember.ReadWrite.All

Read and write group memberships

App Service Managed Identity

User.Read.All

Read user profile

App Service Managed Identity

Reports.Read.All

Read report data

App Service Managed Identity

Organization.Read.All

Read organization information

App Service Managed Identity

 

The above permissions have been added to the script's PermissionsToAdd parameter, shown below. In addition to adding the permissions, you need to enter values for these parameters:

  • tenantID — Your Tenant ID

  • appServiceObjectID — Object ID of the SCIM App Service

When running the script, be sure to authenticate to Azure as a user with adequate permissions to execute it in Azure AD (owner at the tenant level).

############### ## GRAPH API ## ############### Param( $tenantId = "", $appServiceObjectID = "", $PermissionsToAdd = @("Organization.Read.All", "User.Read.All", "Group.Read.All", "GroupMember.ReadWrite.All", "Reports.Read.All", "AuditLog.Read.All") ) # Install AzureAD module if not installed if (-Not(Get-Module -ListAvailable -Name AzureAD)) { try { Install-Module AzureAD -Force } catch { if ($_.Exception.Message.Contains("Administrator rights")) { Write-Host "You must run the script with administrator rights" } else { Write-Error $_.Exception.Message } } } if (Get-Module -ListAvailable -Name AzureAD) { # Check if connected to the target Azure AD Tenant try { $tenantDetail = Get-AzureADTenantDetail } catch [Microsoft.Open.Azure.AD.CommonLibrary.AadNeedAuthenticationException] { Write-Host "You're not connected."; Connect-AzureAD -TenantId $tenantId; $tenantDetail = Get-AzureADTenantDetail } if ($tenantDetail.ObjectId -ne $tenantId) { Write-Host "You're not connected to the tenant: " $tenantId; Connect-AzureAD -TenantId $tenantId; } # Managed Identity for the SCIM App Service | Found in App Service -> Identity $ManagedIdentitiesServicePrincipal = Get-AzureADServicePrincipal -Filter "ObjectId eq `'$appServiceObjectID`'" if ($ManagedIdentitiesServicePrincipal -eq $null) { throw "Managed Identity for the app service is not found. `nApp Service Object ID: $appServiceObjectID " } # Resource Name : Microsoft Graph | Resource URI : https://graph.microsoft.com | Application ID : 00000003-0000-0000-c000-000000000000 $GraphAppId = "00000003-0000-0000-c000-000000000000" $GraphServicePrincipal = Get-AzureADServicePrincipal -Filter "appId eq '$GraphAppId'" # Permissions foreach ($PermissionToAdd in $PermissionsToAdd) { $AppRole = $GraphServicePrincipal.AppRoles | Where-Object {$_.Value -eq $PermissionToAdd.Trim() -and $_.AllowedMemberTypes -contains "Application"} if ($AppRole -eq $null) { Write-Error "Invalid Permission `nPermission name: $PermissionToAdd" } else { # Assigns a Graph API service principal to an application role try { New-AzureAdServiceAppRoleAssignment -ObjectId $ManagedIdentitiesServicePrincipal.ObjectId -PrincipalId $ManagedIdentitiesServicePrincipal.ObjectId -ResourceId $GraphServicePrincipal.ObjectId -Id $AppRole.Id -ErrorAction Stop } catch { if ($_.Exception.ErrorContent.Message.Value.Contains("Permission being assigned already")) { Write-Host "`""$AppRole.DisplayName"`"" " Permission is already assigned on the app service" } else { Write-Error $_ } } } } }