RHEL 9 must enable certificate based smart card authentication.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-258122	RHEL-09-611165	SV-258122r997106_rule		Medium

Description
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. A privileged account is defined as an information system account with authorizations of a privileged user. The DOD Common Access Card (CAC) with DOD-approved PKI is an example of multifactor authentication. Satisfies: SRG-OS-000375-GPOS-00160, SRG-OS-000105-GPOS-00052

Description

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. A privileged account is defined as an information system account with authorizations of a privileged user. The DOD Common Access Card (CAC) with DOD-approved PKI is an example of multifactor authentication. Satisfies: SRG-OS-000375-GPOS-00160, SRG-OS-000105-GPOS-00052

STIG	Date
Red Hat Enterprise Linux 9 Security Technical Implementation Guide	2024-06-04

Details

Check Text ( C-61863r926351_chk )
Verify that RHEL 9 has smart cards are enabled in System Security Services Daemon (SSSD), run the following command: $ sudo grep pam_cert_auth /etc/sssd/sssd.conf pam_cert_auth = True If "pam_cert_auth" is not set to "True", the line is commented out, or the line is missing, this is a finding.

Fix Text (F-61787r926352_fix)
Edit the file "/etc/sssd/sssd.conf" and add or edit the following line: pam_cert_auth = True