Prepare for an access review of users' access to an application
Azure Active Directory (Azure AD) Identity Governance allows you to balance your organization's need for security and employee productivity with the right processes and visibility. It provides you with capabilities to ensure that the right people have the right access to the right resources.
Prerequisites for reviewing access
To use Azure AD for an access review of access to an application, you must have one of the following licenses in your tenant:
- Azure AD Premium P2
- Enterprise Mobility + Security (EMS) E5 license
While using the access reviews feature does not require users to have those licenses assigned to them to use the feature, you'll need to have at least as many licenses in your tenant as the number of member (non-guest) users who will be configured as reviewers.
Also, while not required for reviewing access to an application, we recommend also regularly reviewing the membership of privileged directory roles that have the ability to control other users' access to all applications. Administrators in the
Identity Governance Administrator,
Cloud Application Administrator and
Privileged Role Administrator can make changes to users and their application role assignments, so ensure that access review of these directory roles have been scheduled.
Determine how the application is integrated with Azure AD
In order for Azure AD access reviews to be used for an application, then the application must first be integrated with Azure AD. An application being integrated with Azure AD means one of two requirements must be met:
- The application relies upon Azure AD for federated SSO, and Azure AD controls authentication token issuance. If Azure AD is the only identity provider for the application, then only users who are assigned to one of the application's roles in Azure AD are able to sign into the application. Those users that are denied by a review lose their application role assignment and can no longer get a new token to sign in to the application.
- The application relies upon user or group lists that are provided to the application by Azure AD. This fulfillment could be done through a provisioning protocol such as System for Cross-Domain Identity Management (SCIM) or by the application querying Azure AD via Microsoft Graph, or groups that are written to AD DS. Those users that are denied by a review lose their application role assignment or group membership, and when those changes are made available to the application, then the denied users will no longer have access.
If neither of those criteria are met for an application, as the application doesn't rely upon Azure AD, then access reviews can still be used, however there may be some limitations. Users that aren't in your Azure AD or are not assigned to the application roles in Azure AD, won't be included in the review. Also, the changes to remove denied won't be able to be automatically sent to the application if there is no provisioning protocol that the application supports. The organization must instead have a process to send the results of a completed review to the application.
In order to permit a wide variety of applications and IT requirements to be addressed with Azure AD, there are multiple patterns for how an application can be integrated with Azure AD. The following flowchart illustrates how to select from three integration patterns, A-C, that are appropriate for applications for use with identity governance. Knowing what pattern is being used for a particular application helps you to configure the appropriate resources in Azure AD to be ready the access review.
|Pattern||Application integration pattern||Steps to prepare for an access review|
|A||The application supports federated SSO, Azure AD is the only identity provider, and the application doesn't rely upon group or role claims.||In this pattern, you'll configure that the application requires individual application role assignments, and that users are assigned to the application. Then to perform the review, you'll create a single access review for the application, of the users assigned to this application role. When the review completes, if a user was denied, then they will be removed from the application role. Azure AD will then no longer issue that user with federation tokens and the user will be unable to sign into that application.|
|B||If the application uses group claims in addition to application role assignments.||An application may use AD or Azure AD group membership, distinct from application roles to express finer-grained access. Here, you can choose based on your business requirements either to have the users who have application role assignments reviewed, or to review the users who have group memberships. If the groups do not provide comprehensive access coverage, in particular if users may have access to the application even if they aren't a member of those groups, then we recommend reviewing the application role assignments, as in pattern A above.|
|C||If the application doesn't rely solely on Azure AD for federated SSO, but does support provisioning via SCIM, or via updates to a SQL table of users or a non-AD LDAP directory.||In this pattern, you'll configure Azure AD to provision the users with application role assignments to the application's database or directory, update the application role assignments in Azure AD with a list of the users who currently have access, and then create a single access review of the application role assignments. For more information, see Governing an application's existing users to update the application role assignments in Azure AD.|
The integration patterns listed above are applicable to third party SaaS applications, or applications that have been developed by or for your organization.
- Some Microsoft Online Services, such as Exchange Online, use licenses. While user's licenses can't be reviewed directly, if you're using group-based license assignments, with groups with assigned users, you can review the memberships of those groups instead.
- Some applications may use delegated user consent to control access to Microsoft Graph or other resources. As consents by each user aren't controlled by an approval process, consents aren't reviewable in Azure AD. Instead, you can review who is able to connect to the application through Conditional Access policies, that could be based on application role assignments or group memberships.
- If the application doesn't support federation or provisioning protocols, then you'll need a process for manually applying the results when a review completes. For an application that only supports password SSO integration, if an application assignment is removed when a review completes, then the application won't show up on the myapps page for the user, but it won't prevent a user who already knows the password from being able to continue to sign into the application. Please ask the SaaS vendor to onboard to the app gallery for federation or provisioning by updating their application to support a standard protocol.
Check the application and groups are ready for the review
Now that you have identified the integration pattern for the application, check the application as represented in Azure AD is ready for review.
In the Azure portal, click Azure Active Directory, click Enterprise Applications, and check whether your application is on the list of enterprise applications in your Azure AD tenant.
If the application is not already listed, then check if the application is available the application gallery for applications that can be integrated for federated SSO or provisioning. If it is in the gallery, then use the tutorials to configure the application for federation, and if it supports provisioning, also configure the application for provisioning. If the application uses AD security groups, add the application for remote access through Application Proxy and configure group writeback to AD.
Once the application is in the list of enterprise applications in your tenant, select the application from the list.
Change to the Properties tab. Verify that the User assignment required? option is set to Yes. If it's set to No, all users in your directory, including external identities, can access the application, and you can't review access to the application.
Change to the Roles and administrators tab. This tab displays the administrative roles, that give rights to control the representation of the application in Azure AD, not the access rights in the application. For each administrative role that has permissions to allow changing the application integration or assignments, and has an assignment to that administrative role, ensure that only authorized users are in that role.
Change to the Provisioning tab. If automatic provisioning isn't configured, then Azure AD won't have a way to notify the application when a user's access is removed if denied during the review. Provisioning might not be necessary for some integration patterns, if the application is federated and solely relies upon Azure AD as its identity provider, or the application uses AD DS groups. However, if your application integration is pattern C, and the application doesn't support federated SSO with Azure AD as its only identity provider, then you'll need to configure provisioning from Azure AD to the application. Provisioning will be necessary so that Azure AD can automatically remove the reviewed users from the application when a review completes, and this removal step can be done through a change sent from Azure AD to the application through SCIM, LDAP or SQL.
- If this is a gallery application that supports provisioning, configure the application for provisioning.
- If the application is a cloud application and supports SCIM, configure user provisioning with SCIM.
- If the application is an on-premises application and supports SCIM, configure an application with the provisioning agent for on-premises SCIM-based apps.
- If the application relies upon a SQL database, configure an application with the provisioning agent for on-premises SQL-based applications.
- If the application relies upon another LDAP directory, configure an application with the provisioning agent for on-premises LDAP-based applications.
If provisioning is configured, then click on Edit Attribute Mappings, expand the Mapping section and click on Provision Azure Active Directory Users. Check that in the list of attribute mappings, there is a mapping for
isSoftDeletedto the attribute in the application's data store that you would like to set to false when a user loses access. If this mapping isn't present, then Azure AD will not notify the application when a user has gone out of scope, as described in how provisioning works.
If the application supports federated SSO, then change to the Conditional Access tab. Inspect the enabled policies for this application. If there are policies that are enabled, block access, have users assigned to the policies, but no other conditions, then those users may be already blocked from being able to get federated SSO to the application.
Change to the Users and groups tab. This list contains all the users who are assigned to the application in Azure AD. If the list is empty, then a review of the application will complete immediately, since there isn't any task for the reviewer to perform.
If your application is integrated with pattern C, then you'll need to confirm that the users in this list are the same as those in the applications' internal data store, prior to starting the review. Azure AD does not automatically import the users or their access rights from an application, but you can assign users to an application role via PowerShell. See Governing an application's existing users for how to bring in users from different application data stores into Azure AD and assign them to an application role.
Check whether all users are assigned to the same application role, such as User. If users are assigned to multiple roles, then if you create an access review of the application, then all assignments to all of the application's roles will be reviewed together.
Check the list of directory objects assigned to the roles to confirm that there are no groups assigned to the application roles. It's possible to review this application if there is a group assigned to a role; however, a user who is a member of the group assigned to the role, and whose access was denied, won't be automatically removed from the group. If the application does not itself rely upon groups, then we recommend first converting the application to have direct user assignments, rather than members of groups, so that a user whose access is denied during the access review can have their application role assignment removed automatically. If the application does rely upon groups, and all of the application's groups are assigned to the same application role, then you'll review the group memberships instead of reviewing the application assignments.
Next, if the application integration also requires one or more groups to be reviewed, as described in pattern B, then check each group is ready for review.
- In the Azure portal experience for Azure AD, click Groups, and then select the group from the list.
- On the Overview tab, verify that the Membership type is Assigned, and the Source is Cloud. If the application uses a dynamic group, or a group synchronized from on-premises, then those group memberships can't be changed in Azure AD. We recommend converting the application to groups created in Azure AD with assigned memberships, then copy the member users to that new group.
- Change to the Roles and administrators tab. This tab displays the administrative roles, that give rights to control the representation of the group in Azure AD, not the access rights in the application. For each administrative role that allows changing group membership and has users in that administrative role, ensure that only authorized users are in that role.
- Change to the Members tab. Verify that the members of the group are users, and that there are no non-user members or nested groups. If there are no members of a group when the review starts, the review of that group will complete immediately.
- Change to the Owners tab. Make sure that no authorized users are shown as owners. If you'll be asking the group owners to perform the access review of a group, then confirm that the group has one or more owners.
Select appropriate reviewers
When you create each access review, administrators can choose one or more reviewers. The reviewers can carry out a review by choosing users for continued access to a resource or removing them.
Typically a resource owner is responsible for performing a review. If you're creating a review of a group, as part of reviewing access for an application integrated in pattern B, then you can select the group owners as reviewers. As applications in Azure AD don't necessarily have an owner, the option for selecting the application owner as a reviewer isn't possible. Instead, when creating the review, you can supply the names of the application owners to be the reviewers.
You can also choose, when creating a review of a group or application, to have a multi-stage review. For example, you could select to have the manager of each assigned user perform the first stage of the review, and the resource owner the second stage. That way the resource owner can focus on the users who have already been approved by their manager.
Before creating the reviews, check that you have at least as many Azure AD Premium P2 licenses in your tenant as there are member users who are assigned as reviewers. Also, check that all reviewers are active users with email addresses. When the access reviews start, they each review an email from Azure AD. If the reviewer doesn't have a mailbox, they will not receive the email when the review starts or an email reminder. And, if they are blocked from being able to sign in to Azure AD, they will not be able to perform the review.
Create the reviews
Once you've identified the resources, the application and optionally one or more groups, based on the integration pattern, and who the reviewers should be, then you can configure Azure AD to start the reviews.
For this step, you'll need to be in the
Identity Governance administratorrole.
In patterns A and C, you'll create one access review, selecting the application. Follow the instructions in the guide for creating an access review of groups or applications, to create the review of the application's role assignments.
If your application is integrated with pattern B, use the same guide to create additional access reviews for each of the groups.
If you create an access review and enable review decision helpers, then the decision helper will vary depending upon the resource being reviewed. If the resource is an application, recommendations are based on the 30-day interval period depending on when the user last signed in to the application. If the resource is a group, then the recommendations are based on the interval when the user last signed into to any application in the tenant, not just the application using those groups.
When the access reviews start, ask the reviewers to give input. By default, they each receive an email from Azure AD with a link to the access panel, where they review membership in the groups or access to the application.
View the assignments that are updated when the reviews complete
Once the reviews have started, you can monitor their progress, and update the approvers if needed, until the review completes. You can then confirm that the users, whose access was denied by the reviewers, are having their access removed from the application.
Monitor the access reviews, ensuring the reviewers are making selections to approve or deny user's need for continued access, until the access review completes.
If auto-apply wasn't selected when the review was created, then you'll need to apply the review results when it completes.
Wait for the status of the review to change to Result applied. You should expect to see denied users, if any, being removed from the group membership or application assignment in a few minutes.
If you had previously configured provisioning of users to the application, then when the results are applied, Azure AD will begin deprovisioning denied users from the application. You can monitor the process of deprovisioning users. If provisioning indicates an error with the application, you can download the provisioning log to investigate if there was a problem with the application.
If you had configured group writeback for the reviewed groups, then wait until group writeback completes in Azure AD Connect and the changes propagate to all the domain controllers.
If provisioning wasn't configured for your application, then you may need to separately copy the list of denied users to the application. For example, in access reviews for a Windows Server AD-managed group, use this PowerShell sample script. The script outlines the required Microsoft Graph calls and exports the Windows Server AD PowerShell cmdlets to carry out the changes.
If you wish, you can also download a review history report of completed reviews.
How long a user who has been denied continued access is able to continue to use a federated application will depend upon the application's own session lifetime, and on the access token lifetime. If the applications used Kerberos, since Kerberos caches the group memberships of a user when they sign into a domain, the users may continue to have access until their Kerberos tickets expire. To learn more about controlling the lifetime of access tokens, see configurable token lifetimes.