UBTU-20-010033 - The Ubuntu operating system must implement smart card logins for multifactor authentication for local and network access to privileged and non-privileged accounts - libpam-pkcs11


Without the use of multifactor authentication, the ease of access to privileged functions is greatly increased.

Multifactor authentication requires using two or more factors to achieve authentication.

Factors include:
1) something a user knows (e.g., password/PIN);
2) something a user has (e.g., cryptographic identification device, token); and
3) something a user is (e.g., biometric).

A privileged account is defined as an information system account with authorizations of a privileged user.

Network access is defined as access to an information system by a user (or a process acting on behalf of a user) communicating through a network (e.g., local area network, wide area network, or the internet).

The DoD CAC with DoD-approved PKI is an example of multifactor authentication.

Satisfies: SRG-OS-000105-GPOS-00052, SRG-OS-000106-GPOS-00053, SRG-OS-000107-GPOS-00054, SRG-OS-000108-GPOS-00055


Configure the Ubuntu operating system to use multifactor authentication for network access to accounts.

Add or update 'pam_pkcs11.so' in '/etc/pam.d/common-auth' to match the following line:

auth [success=2 default=ignore] pam_pkcs11.so

Set the sshd option 'PubkeyAuthentication yes' in the '/etc/ssh/sshd_config' file.

See Also


Item Details


References: 800-53|IA-2(1), 800-53|IA-2(2), 800-53|IA-2(3), 800-53|IA-2(4), CAT|II, CCI|CCI-000765, CCI|CCI-000766, CCI|CCI-000767, CCI|CCI-000768, Rule-ID|SV-238210r653805_rule, STIG-ID|UBTU-20-010033, Vuln-ID|V-238210

Plugin: Unix

Control ID: c42b7cba9411fde16c5de81bdd6b7ac7cb640807c4e850255068a7733fc6c478