Title

The UEM server must implement replay-resistant authentication mechanisms for network access to non-privileged accounts. (Cat II impact)

Discussion

A replay attack may enable an unauthorized user to gain access to the application. Authentication sessions between the authenticator and the application validating the user credentials must not be vulnerable to a replay attack. An authentication process resists replay attacks if it is impractical to achieve a successful authentication by recording and replaying a previous authentication message. A non-privileged account is any operating system account with authorizations of a non-privileged user. Techniques used to address this include protocols using nonces (e.g., numbers generated for a specific one time use) or challenges (e.g., TLS, WS_Security). Additional techniques include time-synchronous or challenge-response one-time authenticators.

Check Content

Requirement is Not Applicable when UEM server is configured to use DoD Central Directory Service for administrator account authentication. Verify the UEM server implements replay-resistant authentication mechanisms for network access to non-privileged accounts. If the UEM server does not implement replay-resistant authentication mechanisms for network access to non-privileged accounts, this is a finding.

Fix Text

Configure the UEM server to implement replay-resistant authentication mechanisms for network access to non-privileged accounts.

Additional Identifiers

Rule ID: SRG-APP-000157-UEM-000091_rule

Vulnerability ID: SRG-APP-000157-UEM-000091

Group Title: SRG-APP-000157-UEM-000091

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.