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The OL 8 SSH private host key files must have mode "0640" or less permissive.

An XCCDF Rule

Description

If an unauthorized user obtains the private SSH host key file, the host could be impersonated.

ID
SV-248602r991589_rule
Version
OL08-00-010490
Severity
Medium
References
Updated

Remediation Templates

A Manual Procedure

Configure the mode of SSH private host key files under "/etc/ssh" to "0640" with the following command: 
 
     $ sudo chmod 0640 /etc/ssh/ssh_host*key 
 
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