Cis Azure Foundations 5.13

Ensure 'User consent for applications' is set to 'Allow user consent for apps from verified publishers, for selected permissions'

Description

Allow users to provide consent for selected permissions when a request is coming from a verified publisher.

Rationale

If Microsoft Entra ID is running as an identity provider for third-party applications, permissions and consent should be limited to administrators or pre-approved. Malicious applications may attempt to exfiltrate data or abuse privileged user accounts.

Impact

Enforcing this setting may create additional requests that administrators need to review.

Audit Procedure

Using Azure Portal

1. From Azure Home select the Portal Menu
2. Select Microsoft Entra ID
3. Under Manage, select Enterprise applications
4. Under Security, select Consent and permissions
5. Under Manage, select User consent settings
6. Under User consent for applications, ensure Allow user consent for apps from verified publishers, for selected permissions is selected

Using PowerShell

Connect-MgGraph
(Get-MgPolicyAuthorizationPolicy).DefaultUserRolePermissions | Select-Object -ExpandProperty PermissionGrantPoliciesAssigned

The command should return either ManagePermissionGrantsForSelf.microsoft-user-default-low or a custom app consent policy id if one is in use.

Expected Result

User consent for applications should be set to Allow user consent for apps from verified publishers, for selected permissions. PowerShell should return ManagePermissionGrantsForSelf.microsoft-user-default-low.

Remediation

Using Azure Portal

1. From Azure Home select the Portal Menu
2. Select Microsoft Entra ID
3. Under Manage, select Enterprise applications
4. Under Security, select Consent and permissions
5. Under Manage, select User consent settings
6. Under User consent for applications, select Allow user consent for apps from verified publishers, for selected permissions
7. Click Save

Default Value

By default, User consent for applications is set to Allow user consent for apps.

References

1. https://learn.microsoft.com/en-us/entra/identity/enterprise-apps/configure-user-consent?pivots=ms-graph#configure-user-consent-to-applications
2. https://learn.microsoft.com/en-us/security/benchmark/azure/mcsb-privileged-access#pa-1-separate-and-limit-highly-privilegedadministrative-users
3. https://learn.microsoft.com/en-us/security/benchmark/azure/mcsb-governance-strategy#gs-2-define-and-implement-enterprise-segmentationseparation-of-duties-strategy
4. https://learn.microsoft.com/en-us/security/benchmark/azure/mcsb-governance-strategy#gs-6-define-and-implement-identity-and-privileged-access-strategy
5. https://learn.microsoft.com/en-us/powershell/module/microsoft.graph.identity.signins/get-mgpolicyauthorizationpolicy?view=graph-powershell-1.0

CIS Controls

Profile

Level 2 | Manual