RHEL 9 SSH server configuration file must have mode 0600 or less permissive.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-257999 | RHEL-09-255115 | SV-257999r1045061_rule | Medium |
| Description |
| Service configuration files enable or disable features of their respective services that if configured incorrectly can lead to insecure and vulnerable configurations. Therefore, service configuration files should be owned by the correct group to prevent unauthorized changes. |
| STIG | Date |
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2024-12-04 |
Details
| Check Text (C-61740r1045060_chk) |
| Verify the permissions of the "/etc/ssh/sshd_config" file with the following command: $ sudo find /etc/ssh/sshd_config /etc/ssh/sshd_config.d -exec stat -c "%a %n" {} \; 600 /etc/ssh/sshd_config 700 /etc/ssh/sshd_config.d 600 /etc/ssh/sshd_config.d/50-cloud-init.conf 600 /etc/ssh/sshd_config.d/50-redhat.conf If the "/etc/ssh/sshd_config" permissions are not "0600", this is a finding. |
| Fix Text (F-61664r925983_fix) |
| Configure the "/etc/ssh/sshd_config" permissions to be "0600" with the following command: $ sudo chmod 0600 /etc/ssh/sshd_config |