Ubuntu 24.04 LTS must map the authenticated identity to the user or group account for PKI-based authentication.

Severity
Group ID
Group Title
Version
Rule ID
Date
STIG Version
highV-270736SRG-OS-000068-GPOS-00036UBTU-24-400370SV-270736r1066697_rule2025-02-181
Description
Without mapping the certificate used to authenticate to the user account, the ability to determine the identity of the individual user or group will not be available for forensic analysis.
ℹ️ Check
Verify that authenticated certificates are mapped to the appropriate user group in the "/etc/sssd/sssd.conf" file with the following command: $ grep -i ldap_user_certificate /etc/sssd/sssd.conf ldap_user_certificate=userCertificate;binary
✔️ Fix
Configure sssd to map authenticated certificates to the appropriate user group by adding the following line to the "/etc/sssd/sssd.conf" file: ldap_user_certificate=userCertificate;binary