Ensure app permission policies are configured

MediumLevel 1Manual reviewm365

Description

This policy setting controls which class of apps are available for users to install. Allowing users to install third-party or unverified apps poses a potential risk of introducing malicious software to the environment.

How it is checked

Audit method: Manual review

This recommendation cannot be checked automatically. A scan lists it with these instructions when you pass --include-manual.

To audit using the UI: 1. Navigate to Microsoft Teams admin center https://admin.teams.microsoft.com. 2. Expand Teams apps and select Manage apps. 3. In the upper right click Actions > Org-wide app settings. 4. For Third-party apps verify Let users install and use available apps by default is Off. 5. For Custom apps verify Let users install and use available apps by default is Off. 6. For Custom apps verify Let users interact with custom apps in preview is Off.

How it is fixed

Fix method: Guidance or infrastructure patch

To remediate using the UI: 1. Navigate to Microsoft Teams admin center https://admin.teams.microsoft.com. 2. Expand Teams apps and select Manage apps. 3. In the upper right click Actions > Org-wide app settings. 4. For Third-party apps set Let users install and use available apps by default to Off. 5. For Custom apps set Let users install and use available apps by default to Off. 6. For Custom apps set Let users interact with custom apps in preview to Off.

Properties

Operating systems: Any
Tags: access-controlm365saas
Reference: CIS Microsoft 365 Foundations Benchmark v7.0.0 - 8.4.1 Ensure app permission policies are configured