Cis Azure Foundations 8.1.7.1

8.1.7.1 Ensure That Microsoft Defender for Azure Cosmos DB Is Set To 'On' (Automated)

Description

Microsoft Defender for Azure Cosmos DB scans all incoming network requests for threats to your Azure Cosmos DB resources.

Rationale

In scanning Azure Cosmos DB requests within a subscription, requests are compared to a heuristic list of potential security threats. These threats could be a result of a security breach within your services, thus scanning for them could prevent a potential security threat from being introduced.

Impact

Enabling Microsoft Defender for Azure Cosmos DB requires enabling Microsoft Defender for your subscription. Both will incur additional charges.

Audit Procedure

From Azure Portal:

1. Go to Microsoft Defender for Cloud.
2. Under Management, select Environment Settings.
3. Click on the subscription name.
4. Select the Defender plans blade.
5. On the Database row click on Select types >.
6. Ensure the toggle switch next to Azure Cosmos DB is set to On.

From Azure CLI:

az security pricing show -n CosmosDbs --query pricingTier

From PowerShell:

Get-AzSecurityPricing -Name 'CosmosDbs' | Select-Object Name,PricingTier

Ensure output of -PricingTier is Standard.

From Azure Policy:

• Policy ID: adbe85b5-83e6-4350-ab58-bf3a4f736e5e - Name: 'Microsoft Defender for Azure Cosmos DB should be enabled'

Expected Result

The pricing tier for CosmosDbs should be Standard.

Remediation

From Azure Portal:

1. Go to Microsoft Defender for Cloud.
2. Under Management, select Environment Settings.
3. Click on the subscription name.
4. Select the Defender plans blade.
5. On the Database row click on Select types >.
6. Set the toggle switch next to Azure Cosmos DB to On.
7. Click Continue.
8. Click Save.

From Azure CLI:

az security pricing create -n 'CosmosDbs' --tier 'standard'

From PowerShell:

Set-AzSecurityPricing -Name 'CosmosDbs' -PricingTier 'Standard'

Default Value

By default, Microsoft Defender for Azure Cosmos DB is not enabled.

References

1. https://azure.microsoft.com/en-us/pricing/details/defender-for-cloud/
2. https://learn.microsoft.com/en-us/azure/defender-for-cloud/connect-azure-subscription
3. https://learn.microsoft.com/en-us/azure/defender-for-cloud/alerts-overview
4. https://learn.microsoft.com/en-us/security/benchmark/azure/baselines/azure-cosmos-db-security-baseline
5. https://learn.microsoft.com/en-us/azure/defender-for-cloud/tutorial-enable-databases-plan

Profile

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