ACF2 PSWD GSO record value must be set to require 24 hours/1 day as the minimum password lifetime.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223507	ACF2-ES-000900	SV-223507r533198_rule		Medium

Description
Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enforcement requirement. If users are allowed to immediately and continually change their password, then the password could be repeatedly changed in a short period of time to defeat the organization's policy regarding password reuse.

STIG	Date
IBM z/OS ACF2 Security Technical Implementation Guide	2020-10-02

Details

Check Text ( C-25180r500654_chk )
From an ACF command screen enter: SET CONTROL(GSO) SHOW PSwdopts If "PSWDMIN" is set "1", this is not a finding.

Fix Text (F-25168r500655_fix)
Configure Password option "PSWDMIN" to minimum of "1" day.