V-252950

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. There are various methods of mapping certificates to user/group accounts for TOSS. For the purposes of this requirement, the check and fix will account for Active Directory mapping. Some of the other possible methods include joining the system to a domain and utilizing a TOSS idM server, or a local system mapping, where the system is not part of a domain.

Check Content

Verify the certificate of the user or group is mapped to the corresponding user or group in the "sssd.conf" file with the following command:

Note: If the system does not support PKI authentication, this requirement is Not Applicable.

$ sudo cat /etc/sssd/sssd.conf

[sssd]
config_file_version = 2
services = pam, sudo, ssh
domains = testing.test

[pam]
pam_cert_auth = True

[domain/testing.test]
id_provider = ldap

[certmap/testing.test/rule_name]
matchrule =<SAN>.*EDIPI@mil
maprule = (userCertificate;binary={cert!bin})
domains = testing.test

If the certmap section does not exist, ask the System Administrator to indicate how certificates are mapped to accounts. If there is no evidence of certificate mapping, this is a finding.