# Cis Azure Compute 2.2.12

> Cis Azure Compute 2.2.12 is an Agent Skill for devops & security published in the CyberStrikeus/CyberStrike repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

Ensure managed identities are configured

- Skill name: `cis-azure-compute-2.2.12`
- Category: [DevOps & Security](https://www.openparable.com/skill/devops-security/1)
- Source: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/CIS_benchmarks/Cloud_Providers/Microsoft_Azure/CIS_Microsoft_Azure_Compute_Services_Benchmark_v2.0.0/cis-azure-compute-2.2.12/SKILL.md
- Repository: CyberStrikeus/CyberStrike (1,211 GitHub stars when collected)

## SKILL.md

# Ensure managed identities are configured

## Description

Managed identities from Microsoft Entra ID allow App Service deployment slots to securely access other Azure services without the need to provision or rotate any secrets.

## Rationale

Using managed identities with App Service deployment slots eliminates the need to store and manage credentials to access Azure resources.

## Impact

Minor administrative overhead to configure and manage role assignments for managed identities.

## Audit Procedure

### Using Azure Portal

1. Go to `App Services`.
2. Click the name of an app.
3. Under `Deployment`, click `Deployment slots`.
4. Click the name of a deployment slot.
5. Under `Settings`, click `Identity`.
6. Ensure that in the `System assigned` pane, the `Status` is set to `On`, and an `Object (principal) ID` is displayed, or that in the `User assigned` pane, a managed identity is listed.
7. Repeat steps 1-6 for each app and deployment slot.

### Using Azure CLI

Run the following command to list apps:

```bash
az webapp list
```

For each app, run the following command to list deployment slots:

```bash
az webapp deployment slot list --resource-group <resource-group-name> --name <app-name>
```

For each deployment slot, ensure that `identity` contains `type` set to `SystemAssigned`, `UserAssigned`, or both.

### Using Azure PowerShell

Run the following command to list apps:

```powershell
Get-AzWebApp
```

Run the following command to list deployment slots for an app:

```powershell
Get-AzWebAppSlot -ResourceGroupName <resource-group-name> -Name <app-name>
```

Run the following command to get the deployment slot with a given name:

```powershell
$slot = Get-AzWebAppSlot -ResourceGroupName <resource-group-name> -Name <app-name> -Slot <deployment-slot-name>
```

Run the following command to get the identity type setting for the deployment slot:

```powershell
$slot.identity.Type
```

Ensure the command returns `SystemAssigned`, `UserAssigned`, or both. Repeat for each app and deployment slot.

## Expected Result

The `identity.Type` property should return `SystemAssigned`, `UserAssigned`, or `SystemAssigned, UserAssigned`.

## Remediation

### Using Azure Portal

1. Go to `App Services`.
2. Click the name of an app.
3. Under `Deployment`, click `Deployment slots`.
4. Click the name of a deployment slot.
5. Under `Settings`, click `Identity`.
6. To add a system assigned managed identity:
   1. In the `System assigned` pane, under `Status`, click `On`.
   2. Click `Save`.
   3. Click `Yes`.
7. To add a user assigned managed identity:
   1. In the `User assigned` pane, click `Add`.
   2. Use the filter box to search for a managed identity.
   3. Select the identity.
   4. Click `Add`.
8. Repeat steps 1-7 for each app and deployment slot requiring remediation.

### Using Azure PowerShell

For each deployment slot requiring remediation, run the following command to assign a system-assigned managed identity:

```powershell
Set-AzWebAppSlot -ResourceGroupName <resource-group-name> -Name <app-name> -Slot <deployment-slot-name> -AssignIdentity $true
```

## Default Value

Managed identities are disabled by default for App Service deployment slots.

## References

1. https://learn.microsoft.com/en-us/security/benchmark/azure/mcsb-identity-management#im-1-use-centralized-identity-and-authentication-system
2. https://learn.microsoft.com/en-us/azure/app-service/overview-managed-identity
3. https://learn.microsoft.com/en-us/cli/azure/webapp
4. https://learn.microsoft.com/en-us/powershell/module/az.websites/get-azwebapp
5. https://learn.microsoft.com/en-us/powershell/module/az.websites/get-azwebappslot
6. https://learn.microsoft.com/en-us/powershell/module/az.websites/set-azwebappslot

## Profile

Level 1 | Automated

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Source: https://www.openparable.com/skill/devops-security/cis-azure-compute-2-2-12 (OpenParable). Cite the canonical URL above.