The Oracle Linux operating system must be configured so that the SSH daemon does not allow authentication using an empty password.

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The Oracle Linux operating system must be configured so that the SSH daemon does not allow authentication using an empty password.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-99115	OL07-00-010300	SV-108219r1_rule		High

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	2020-05-29

Details

Check Text ( C-97959r1_chk )
To determine how the SSH daemon's "PermitEmptyPasswords" option is set, run the following command: # grep -i PermitEmptyPasswords /etc/ssh/sshd_config PermitEmptyPasswords no If no line, a commented line, or a line indicating the value "no" is returned, the required value is set. If the required value is not set, this is a finding.

Fix Text (F-104795r1_fix)
To explicitly disallow remote logon from accounts with empty passwords, add or correct the following line in "/etc/ssh/sshd_config": PermitEmptyPasswords no The SSH service must be restarted for changes to take effect. Any accounts with empty passwords should be disabled immediately, and PAM configuration should prevent users from being able to assign themselves empty passwords.