Canonical Ubuntu 20.04 LTS STIG:
(in versions v1 r8 through v1 r1)
The Ubuntu operating system must enforce a 60-day maximum password lifetime restriction. Passwords for new users must have a 60-day maximum password lifetime restriction. (Cat III impact)
Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If the operating system does not limit the lifetime of passwords and force users to change their passwords, there is the risk that the operating system passwords could be compromised.
Verify the Ubuntu operating system enforces a 60-day maximum password lifetime for new user accounts by running the following command: $ grep -i ^pass_max_days /etc/login.defs PASS_MAX_DAYS 60 If the "PASS_MAX_DAYS" parameter value is less than "60" or is commented out, this is a finding.
Configure the Ubuntu operating system to enforce a 60-day maximum password lifetime. Add or modify the following line in the "/etc/login.defs" file: PASS_MAX_DAYS 60
Rule ID: SV-238203r653784_rule
Vulnerability ID: V-238203
Group Title: SRG-OS-000076-GPOS-00044
The information system enforces maximum password lifetime restrictions.