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-221852r603260_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 7 Security Technical Implementation Guide	2022-12-06

Details

Check Text ( C-23567r419628_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