Control: 1.2.6 Ensure Multi-factor Authentication is Required for Azure Management

Description

For designated users, they will be prompted to use their multi-factor authentication (MFA) process on logins.

Enabling multi-factor authentication is a recommended setting to limit the use of Administrative actions and to prevent intruders from changing settings.

Remediation

From Azure Portal

From Azure Home select the Portal Menu and select Azure Active Directory.
Select Security.
Select Conditional Access.
Click + New policy.
Enter a name for the policy.
Select Users or workload identities.
Under Include, select All users.
Under Exclude, check Users and groups.
Select users this policy should not apply to and click Select.
Select Cloud apps or actions.
Select Select apps.
Check the box next to Microsoft Azure Management and click Select.
Select Grant.
Under Grant access, check Require multifactor authentication and click Select.
Set Enable policy to Report-only.
Click Create.

After testing the policy in report-only mode, update the Enable policy setting from Report-only to On.

Default Value

MFA is not enabled by default for administrative actions.

Usage

Run the control in your terminal:

powerpipe control run azure_compliance.control.cis_v200_1_2_6

Snapshot and share results via Turbot Pipes:

powerpipe login
powerpipe control run azure_compliance.control.cis_v200_1_2_6 --share

SQL

This control uses a named query:

with distinct_tenant as (
  select
    distinct tenant_id,
    subscription_id,
    _ctx
  from
    azure_tenant
)
select
  p.id as resource,
  case
    when p.built_in_controls @> '["mfa"]' then 'ok'
    else 'alarm'
  end as status,
  case
    when p.built_in_controls @> '["mfa"]' then p.display_name || ' MFA enabled.'
    else p.display_name || ' MFA disabled.'
  end as reason,
  t.tenant_id
  
from
  distinct_tenant as t,
  azuread_conditional_access_policy as p;