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V-238203

CAT III (Low)

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.

Rule ID

SV-238203r1038967_rule

STIG

Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide

Version

V2R4

CCIs

CCI-000199 CCI-004066

Discussion

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.

Check Content

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 greater than 60, or commented out, this is a finding.

Fix Text

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