RHEL 9 SSH server configuration file must be group-owned by root.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-257997	RHEL-09-255105	SV-257997r925978_rule		Medium

Description
Service configuration files enable or disable features of their respective services, which if configured incorrectly, can lead to insecure and vulnerable configurations. Therefore, service configuration files must be owned by the correct group to prevent unauthorized changes.

STIG	Date
Red Hat Enterprise Linux 9 Security Technical Implementation Guide	2023-12-01

Details

Check Text ( C-61738r925976_chk )
Verify the group ownership of the "/etc/ssh/sshd_config" file with the following command: $ ls -al /etc/ssh/sshd_config rw-------. 1 root root 3669 Feb 22 11:34 /etc/ssh/sshd_config If the "/etc/ssh/sshd_config" file does not have a group owner of "root", this is a finding.

Fix Text (F-61662r925977_fix)
Configure the "/etc/ssh/sshd_config" file to be group-owned by root with the following command: $ sudo chgrp root /etc/ssh/sshd_config