| name | cis-azure-foundations-5.25 |
| description | Ensure 'Subscription leaving/entering Microsoft Entra tenant' is set to 'Permit no one' |
| category | cis-azure-foundations |
| version | 5.0.0 |
| author | cyberstrike-official |
| tags | ["cis","azure","identity","subscription-management","tenant-security","access-control"] |
| cis_id | 5.25 |
| cis_benchmark | CIS Microsoft Azure Foundations Benchmark v5.0.0 |
| tech_stack | ["azure"] |
| cwe_ids | [] |
| chains_with | ["cis-azure-foundations-5.23","cis-azure-foundations-5.27"] |
| prerequisites | [] |
| severity_boost | {} |
Ensure 'Subscription leaving/entering Microsoft Entra tenant' is set to 'Permit no one'
Description
Users who are set as subscription owners are able to make administrative changes to the subscriptions and move them into and out of Microsoft Entra ID.
Rationale
Permissions to move subscriptions in and out of a Microsoft Entra tenant must only be given to appropriate administrative personnel. A subscription that is moved into a Microsoft Entra tenant may be within a folder to which other users have elevated permissions. This prevents loss of data or unapproved changes of the objects within by potential bad actors.
Impact
Subscriptions will need to have these settings turned off to be moved.
Audit Procedure
Using Azure Portal
- From the Azure Portal Home select the portal menu
- Select
Subscriptions
- In the
Advanced options drop-down menu, select Manage Policies
- Ensure
Subscription leaving Microsoft Entra tenant and Subscription entering Microsoft Entra tenant are set to Permit no one
Expected Result
Both Subscription leaving Microsoft Entra tenant and Subscription entering Microsoft Entra tenant should be set to Permit no one.
Remediation
Using Azure Portal
- From the Azure Portal Home select the portal menu
- Select
Subscriptions
- In the
Advanced options drop-down menu, select Manage Policies
- Set
Subscription leaving Microsoft Entra tenant and Subscription entering Microsoft Entra tenant to Permit no one
- Click
Save changes
Default Value
By default Subscription leaving Microsoft Entra tenant and Subscription entering Microsoft Entra tenant are set to Allow everyone (default).
References
- https://learn.microsoft.com/en-us/azure/cost-management-billing/manage/manage-azure-subscription-policy
- https://learn.microsoft.com/en-us/entra/fundamentals/how-subscriptions-associated-directory