Title

Ubuntu 24.04 LTS must map the authenticated identity to the user or group account for PKI-based authentication. (Cat I impact)

Discussion

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.

Check Content

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 Text

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

Additional Identifiers

Rule ID: SV-270736r1066697_rule

Vulnerability ID: V-270736

Group Title: SRG-OS-000068-GPOS-00036

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.