Microsoft 365
TMA-M365-1.1.3
Ensure that between two and four global admins are designated
Mô tả
Between two and four global administrators should be designated in the tenant. Ideally, these accounts will not have licenses assigned to them which supports additional controls found in this benchmark. The Global Administrator role grants unrestricted access across all services in Microsoft Entra ID and should never be used for routine daily activities. Limiting the number of Global Administrators reduces the attack surface of the tenant and aligns with the principle of least privilege. Fewer than two Global Administrators creates a single point of failure and removes the peer oversight needed to detect unauthorized actions. More than four increases the likelihood of account compromise by an external attacker. Maintaining between two and four Global Administrators balances operational redundancy against privileged access risk. For any accounts assigned the Global Administrator role,...
Cách kiểm tra
Phương pháp kiểm tra: Xem xét thủ công
Note: If an organization's tenant is using a third-party identity provider, the audit and remediation procedures presented here may not be relevant. The principle of the recommendation is still relevant, and compensating controls that are relevant to the third-party identity provider should be implemented. To audit using the UI: 1. Navigate to the Microsoft 365 admin center https://admin.microsoft.com 2. Select Roles > Role assignments. 3. Select the Global Administrator role from the list and click on Assigned. 4. Review the list of Global Administrators. o If there are groups present, then inspect each group and its members. o Take note of the total number of Global Administrators in and outside of groups. 5. Verify the number of Global Administrators is between two and four. To audit using PowerShell: 1. Connect to Microsoft Graph using Connect-MgGraph -Scopes Directory.Read.All 2. Run the following PowerShell script: # Determine Id of GA role using the immutable RoleTemplateId value. $GlobalAdminRole = Get-MgDirectoryRole -Filter "RoleTemplateId eq '62e90394- 69f5-4237-9190-012177145e10'" $RoleMembers = Get-MgDirectoryRoleMember -DirectoryRoleId $GlobalAdminRole.Id $GlobalAd...
Cách khắc phục
Phương pháp khắc phục: Hướng dẫn hoặc bản vá hạ tầng
To remediate using the UI: 1. Navigate to the Microsoft 365 admin center https://admin.microsoft.com 2. Select Users > Active Users. 3. In the Search field enter the name of the user to be made a Global Administrator. 4. To create a new Global Admin: 1. Select the user's name. 2. A window will appear to the right. 3. Select Manage roles. 4. Select Admin center access. 5. Check Global Administrator. 6. Click Save changes. 5. To remove a Global Admin: 1. In the Search field, enter the name of the user to be removed. 2. Select the user's name. 3. A window will appear to the right. 4. Under Roles, select Manage roles. 5. Uncheck Global Administrator. 6. Click Save changes.
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- Tham chiếu
- CIS Microsoft 365 Foundations Benchmark v7.0.0 - 1.1.3 Ensure that between two and four global admins are designated