lacework-global-582
9.5 Ensure that Register with Azure Active Directory is enabled on App Service (Automated)
Profile Applicability
• Level 1
Description
Managed service identity in App Service provides more security by eliminating secrets from the app, such as credentials in the connection strings. When registering with Azure Active Directory in App Service, the app will connect to other Azure services securely without the need for usernames and passwords.
Rationale
App Service provides a highly scalable, self-patching web hosting service in Azure. It also provides a managed identity for apps, which is a turn-key solution for securing access to Azure SQL Database and other Azure services.
Audit
From Azure Portal
- From Azure Portal open the Portal Menu in the top left
- Go to
App Services
- Click on each App
- Under the
Setting
section, Click onIdentity
- Under the
System assigned
pane, ensure thatStatus
set toOn
From Azure CLI
To check Register with Azure Active Directory feature status for an existing app, run the following command,
az webapp identity show --resource-group <RESOURCE_GROUP_NAME> --name <APP_NAME> --query principalId
The output should return unique Principal ID. If no output for the above command then Register with Azure Active Directory is not set.
From Azure PowerShell
List the web apps.
Get-AzWebApp
For each web app run the following command.
Get-AzWebapp -ResourceGroupName <app resource group> -Name <app name>
Make sure the Identity
setting contains a unique Principal ID
Remediation
From Azure Portal
- Login to Azure Portal using https://portal.azure.com
- Go to
App Services
- Click on each App
- Under
Setting
section, Click onIdentity
- Under the
System assigned
pane, setStatus
toOn
From Azure CLI
To set Register with Azure Active Directory feature for an existing app, run the following command:
az webapp identity assign --resource-group <RESOURCE_GROUP_NAME> --name <APP_NAME>
From Azure PowerShell
To register with Azure Active Directory feature for an existing app, run the following command:
Set-AzWebApp -AssignIdentity $True -ResourceGroupName <resource_Group_Name> -Name <App_Name>
References
https://docs.microsoft.com/en-gb/azure/app-service/app-service-web-tutorial-connect-msi
https://docs.microsoft.com/en-us/security/benchmark/azure/security-controls-v3-identity-management#im-1-use-centralized-identity-and-authentication-system