Vulnerability 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

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