Information
Enable multi-factor authentication for all non-privileged users.
Rationale:
Multi-factor authentication requires an individual to present a minimum of two separate forms of authentication before access is granted. Multi-factor authentication provides additional assurance that the individual attempting to gain access is who they claim to be. With multi-factor authentication, an attacker would need to compromise at least two different authentication mechanisms, increasing the difficulty of compromise and thus reducing the risk.
Impact:
Users would require two forms of authentication before any access is granted. Also, this requires an overhead for managing dual forms of authentication.
NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.
Solution
Follow Microsoft Azure documentation and enable multi-factor authentication in your environment.
https://docs.microsoft.com/en-us/azure/active-directory/authentication/tutorial-enable-azure-mfa
Enabling and configuring MFA is a multi-step process. Here are some additional resources on the process within Azure AD:
https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/howto-conditional-access-policy-admin-mfa
https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-mfa-getstarted#enable-multi-factor-authentication-with-conditional-access
https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-mfa-mfasettings
Default Value:
By default, multi-factor authentication is disabled for all users.