The Oracle Linux operating system must be configured so that the SSH daemon does not allow authentication using rhosts authentication.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-221852 | OL07-00-040350 | SV-221852r991589_rule | CCI-000366 | 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 7 Security Technical Implementation Guide | 2025-05-08 | |||
Details
Check Text (C-221852r991589_chk)
Verify the SSH daemon does not allow authentication using known hosts authentication.
To determine how the SSH daemon's "IgnoreRhosts" option is set, run the following command:
# grep -i IgnoreRhosts /etc/ssh/sshd_config
IgnoreRhosts yes
If the value is returned as "no", the returned line is commented out, or no output is returned, this is a finding.
Fix Text (F-23556r419629_fix)
Configure the SSH daemon to not allow authentication using known hosts authentication.
Add the following line in "/etc/ssh/sshd_config", or uncomment the line and set the value to "yes":
IgnoreRhosts yes