The Ubuntu operating system must allow the use of a temporary password for system logons with an immediate change to a permanent password.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-238361	UBTU-20-010440	SV-238361r853436_rule		Medium

Description
Without providing this capability, an account may be created without a password. Non-repudiation cannot be guaranteed once an account is created if a user is not forced to change the temporary password upon initial logon. Temporary passwords are typically used to allow access when new accounts are created or passwords are changed. It is common practice for administrators to create temporary passwords for user accounts which allow the users to log on, yet force them to change the password once they have successfully authenticated.

Description

Without providing this capability, an account may be created without a password. Non-repudiation cannot be guaranteed once an account is created if a user is not forced to change the temporary password upon initial logon. Temporary passwords are typically used to allow access when new accounts are created or passwords are changed. It is common practice for administrators to create temporary passwords for user accounts which allow the users to log on, yet force them to change the password once they have successfully authenticated.

STIG	Date
Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide	2023-12-01

Details

Check Text ( C-41571r654256_chk )
Verify a policy exists that ensures when a user account is created, it is created using a method that forces a user to change their password upon their next login. If a policy does not exist, this is a finding.

Fix Text (F-41530r654257_fix)
Create a policy that ensures when a user is created, it is created using a method that forces a user to change their password upon their next login. Below are two examples of how to create a user account that requires the user to change their password upon their next login. $ sudo chage -d 0 [UserName] or $ sudo passwd -e [UserName]