ACF2 PSWD GSO record value must be set to prohibit password reuse for a minimum of five generations or more.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-223508 | ACF2-ES-000910 | SV-223508r1001119_rule | CCI-004061 | medium |
| Description | ||||
| Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. If the information system or application allows the user to consecutively reuse their password when that password has exceeded its defined lifetime, the end result is a password that is not changed as per policy requirements. | ||||
| STIG | Date | |||
| IBM z/OS ACF2 Security Technical Implementation Guide | 2025-06-24 | |||
Details
Check Text (C-223508r1001119_chk)
From an ACF command screen enter:
SET CONTROL(GSO)
LIST PSWD
If "PSWDXHIST" is not specified, this is a finding.
If "PSWDXHIST#" is set to "5" or greater, this is not a finding.
Fix Text (F-25169r500658_fix)
Configure Password option "PSWXHST" is coded and "PSWXHST#" is "5" or greater.