UBTU-20-010035 - The Ubuntu operating system must use strong authenticators in establishing nonlocal maintenance and diagnostic sessions.
Information
Nonlocal maintenance and diagnostic activities are those activities conducted by individuals communicating through a network, either an external network (e.g., the internet) or an internal network. Local maintenance and diagnostic activities are those activities carried out by individuals physically present at the information system or information system component and not communicating across a network connection. Typically, strong authentication requires authenticators that are resistant to replay attacks and employ multifactor authentication. Strong authenticators include, for example, PKI where certificates are stored on a token protected by a password, passphrase, or biometric.Solution
Configure the Ubuntu operating system to use strong authentication when establishing nonlocal maintenance and diagnostic sessions.Add or modify the following line to /etc/ssh/sshd_config:
UsePAM yes
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_CAN_Ubuntu_20-04_LTS_V1R5_STIG.zip
Item Details
Audit Name: DISA STIG Ubuntu 20.04 LTS v1r5
Category: MAINTENANCE
References: 800-53|MA-4c., CAT|II, CCI|CCI-000877, Rule-ID|SV-238211r653808_rule, STIG-ID|UBTU-20-010035, Vuln-ID|V-238211
Plugin: Unix
Control ID: f3a4e18020dd5f1c010306658a98d0ec35acfd411701ae4a4971ec9fb01e1d7a