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The OL 8 SSH daemon must not allow GSSAPI authentication, except to fulfill documented and validated mission requirements.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-248607 | OL08-00-010522 | SV-248607r858576_rule | Medium |
| Description |
|---|
| Configuring this setting for the SSH daemon provides additional assurance that remote logon via SSH will require a password, even in the event of misconfiguration elsewhere. |
| STIG | Date |
|---|---|
| Oracle Linux 8 Security Technical Implementation Guide | 2023-12-01 |
Details
| Check Text ( C-52041r858575_chk ) |
|---|
| Verify the SSH daemon does not allow GSSAPI authentication with the following command: $ sudo grep -ir GSSAPIAuthentication /etc/ssh/sshd_config* GSSAPIAuthentication no If the value is returned as "yes", the returned line is commented out, no output is returned, or has not been documented with the ISSO, this is a finding. If conflicting results are returned, this is a finding. |
| Fix Text (F-51995r779386_fix) |
|---|
| Configure the SSH daemon to not allow GSSAPI authentication. Add the following line in "/etc/ssh/sshd_config", or uncomment the line and set the value to "no": GSSAPIAuthentication no The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command: $ sudo systemctl restart sshd.service |