STIGQter: STIG Summary: Oracle Linux 8 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

OL 8 must map the authenticated identity to the user or group account for PKI-based authentication.

DISA Rule

SV-248685r958452_rule

Vulnerability Number

V-248685

Group Title

SRG-OS-000068-GPOS-00036

Rule Version

OL08-00-020090

Severity

CAT II

CCI(s)

• CCI-000187 - For public key-based authentication, map the authenticated identity to the account of the individual or group.

Weight

10

Fix Recommendation

Configure OL 8 to map the authenticated identity to the user or group account by adding or modifying the "certmap" section of the "/etc/sssd/sssd.conf" file based on the following example:

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

The "sssd" service must be restarted for the changes to take effect. To restart the "sssd" service, run the following command:

$ sudo systemctl restart sssd.service

Check Contents

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 Administrator demonstrates the use of an approved alternate multifactor authentication method, 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, this is a finding.

Vulnerability Number

V-248685

Documentable

False

Rule Version

OL08-00-020090

Severity Override Guidance

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 Administrator demonstrates the use of an approved alternate multifactor authentication method, 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, this is a finding.

Check Content Reference

M

Target Key

5416