cis-azure-compute-2-7

name	cis-azure-compute-2.7
description	Ensure App Service Environment is provisioned with v3 or higher
category	cis-azure-compute
version	2.0.0
author	cyberstrike-official
tags	["cis","azure","app-service-environment","ase"]
cis_id	2.7
cis_benchmark	CIS Microsoft Azure Compute Services Benchmark v2.0.0
tech_stack	["azure"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

Ensure App Service Environment is provisioned with v3 or higher

Description

Ensure App Service Environment is provisioned with v3 or higher to benefit from the latest enhancements.

Rationale

Older versions of App Service Environment require manual management of Azure resources and have greater scaling limitations.

Impact

Manual configuration may be required to complete the migration and to optimize your App Service plan SKU choice to meet your needs.

Audit Procedure

Using Azure Portal

1. Go to App Service Environments.
2. Click the name of an App Service Environment.
3. Ensure that Version displays App Service Environment v3 or higher.
4. Repeat steps 1-3 for each App Service Environment.

Using Azure CLI

Run the following command to list App Service Environments:

az appservice ase list

For each App Service Environment, ensure that kind is set to ASEV3 or higher.

Expected Result

The kind property should be ASEV3 or higher. The Version should display App Service Environment v3.

Remediation

Using Azure Portal

When creating an App Service Environment from the portal, after clicking + Add, ensure that Create App Service Environment v3 is displayed.

Default Value

The default version is currently App Service Environment v3.

Additional Information

App Service Environment v1 and v2 were retired as of 31 August, 2024. As of September 1, 2024, Azure auto-migrated any remaining App Service Environment v1 and v2 on a best-effort basis.

References

1. https://learn.microsoft.com/en-us/azure/app-service/environment/overview
2. https://azure.microsoft.com/en-gb/updates?id=App-Service-Environment-v1v2-Retirement-Update-1
3. https://learn.microsoft.com/en-us/azure/app-service/environment/auto-migration
4. https://learn.microsoft.com/en-us/cli/azure/appservice/ase