The Ubuntu operating system must electronically verify Personal Identity Verification (PIV) credentials.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-238232	UBTU-20-010065	SV-238232r853412_rule		Medium

Description
The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. DoD has mandated the use of the CAC to support identity management and personal authentication for systems covered under Homeland Security Presidential Directive (HSPD) 12, as well as making the CAC a primary component of layered protection for national security systems.

STIG	Date
Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide	2022-12-06

Details

Check Text ( C-41442r653869_chk )
Verify the Ubuntu operating system electronically verifies PIV credentials. Verify that certificate status checking for multifactor authentication is implemented with the following command: $ sudo grep use_pkcs11_module /etc/pam_pkcs11/pam_pkcs11.conf \| awk '/pkcs11_module opensc {/,/}/' /etc/pam_pkcs11/pam_pkcs11.conf \| grep cert_policy \| grep ocsp_on cert_policy = ca,signature,ocsp_on; If "cert_policy" is not set to "ocsp_on", or the line is commented out, this is a finding.

Check Text ( C-41442r653869_chk )

Verify the Ubuntu operating system electronically verifies PIV credentials.

Verify that certificate status checking for multifactor authentication is implemented with the following command:

$ sudo grep use_pkcs11_module /etc/pam_pkcs11/pam_pkcs11.conf | awk '/pkcs11_module opensc {/,/}/' /etc/pam_pkcs11/pam_pkcs11.conf | grep cert_policy | grep ocsp_on

cert_policy = ca,signature,ocsp_on;

If "cert_policy" is not set to "ocsp_on", or the line is commented out, this is a finding.

Fix Text (F-41401r653870_fix)
Configure the Ubuntu operating system to do certificate status checking for multifactor authentication. Modify all of the "cert_policy" lines in "/etc/pam_pkcs11/pam_pkcs11.conf" to include "ocsp_on".