Ubuntu 22.04

Ubuntu 22.04 LTS must not allow accounts configured with blank or null passwords

STIG ID: UBTU-22-611060 | SRG: SRG-OS-000480-GPOS-00227 | Severity: High | CCI: CCI-000366 | Vulnerability ID: V-260570

Description

If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with empty passwords must never be used in operational environments.

Check

C-64299r1082231_chk

Verify that null passwords cannot be used. Run the following command: $ grep nullok /etc/pam.d/common-auth /etc/pam.d/common-passwordIf this produces any output, this is a finding.

Fix

F-64207r1082232_fix

Remove any instances of the "nullok" option in "/etc/pam.d/common-password" to prevent logons with empty passwords.Remove any instances of the "nullok" option in "/etc/pam.d/common-auth" and "/etc/pam.d/common-password".