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2.1.2 Ensure That Microsoft Defender for App Services Is Set To 'On' (Manual)

Profile Applicability

• Level 2

Description

Turning on Microsoft Defender for App Service enables threat detection for App Service, providing threat intelligence, anomaly detection, and behavior analytics in the Microsoft Defender for Cloud.

Rationale

Enabling Microsoft Defender for App Service allows for greater defense-in-depth, with threat detection provided by the Microsoft Security Response Center (MSRC).

Impact

Turning on Microsoft Defender for App Service incurs an additional cost per resource.

Audit

From Azure Portal

  1. Go to Microsoft Defender for Cloud
  2. Select Environment Settings blade
  3. Click on the subscription name
  4. Select the Defender plans blade
  5. Review the chosen pricing tier. For the App Service resource type Plan should be set to On.

From Azure CLI

Run the following command:

az security pricing show -n AppServices

Ensure -PricingTier is set to Standard

From Azure Powershell

Run the following command:

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

Ensure the -PricingTier is set to Standard

Remediation

From Azure Portal

  1. Go to Microsoft Defender for Cloud
  2. Select Environment Settings blade
  3. Click on the subscription name
  4. Select the Defender plans blade
  5. On the line in the table for App Service Select On under Plan.
  6. Select `Save

From Azure CLI

Run the following command:

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

From Azure Powershell

Run the following command:

Set-AzSecurityPricing -Name "AppServices" -PricingTier "Standard" 

References

https://docs.microsoft.com/en-us/azure/security-center/security-center-detection-capabilities
https://docs.microsoft.com/en-us/rest/api/securitycenter/pricings/list
https://docs.microsoft.com/en-us/rest/api/securitycenter/pricings/update
https://docs.microsoft.com/en-us/powershell/module/az.security/get-azsecuritypricing
https://docs.microsoft.com/en-us/security/benchmark/azure/security-controls-v3-logging-threat-detection#lt-1-enable-threat-detection-capabilities