AIX must implement a way to force an identified temporary user to renew their password at next login.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-91545	AIX7-00-001131	SV-101643r1_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 login. 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 login. 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
IBM AIX 7.x Security Technical Implementation Guide	2020-02-24

Details

Check Text ( C-90699r1_chk )
To force a temporary user to renew their password at next login, admins can set the "flags" attribute of the user to contain "ADMCHG" flag. To check the "flags" attribute for a temporary user (), using the following command: # lsuser -a flags If the above command displays a "no" value for the "flags" attribute, or the value of the attribute does not contain "ADMCHG", this is a finding.

Fix Text (F-97743r1_fix)
Use the following command to force a temporary user () to change password at next login: # chsec -f /etc/security/passwd -s -a "flags=ADMCHG"