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1.90 OL08-00-010520

Information

The OL 8 SSH daemon must not allow authentication using known host's authentication.

GROUP ID: V-248605
RULE ID: SV-248605r991589

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.

Solution

Configure the SSH daemon to not allow authentication using known host's authentication.

Add the following line in "/etc/ssh/sshd_config", or uncomment the line and set the value to "yes":

IgnoreUserKnownHosts yes

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

See Also

https://workbench.cisecurity.org/benchmarks/23791

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-248605r991589_rule, STIG-ID|OL08-00-010520, Vuln-ID|V-248605

Plugin: Unix

Control ID: cf06e0bbdb927320779c8e0afc2d7567d5e9bf4c688b792ad3ddff2bf1213c5f