Check: ACF2-ES-000910
IBM z/OS ACF2 STIG:
ACF2-ES-000910
(in versions v9 r2 through v9 r1)
Title
ACF2 PSWD GSO record value must be set to prohibit password reuse for a minimum of five generations or more. (Cat II impact)
Discussion
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.
Check Content
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
Configure Password option "PSWXHST" is coded and "PSWXHST#" is "5" or greater.
Additional Identifiers
Rule ID: SV-223508r1001119_rule
Vulnerability ID: V-223508
Group Title: SRG-OS-000077-GPOS-00045
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-004061 |
For password-based authentication, verify when users create or update passwords, that the passwords are not found on the list of commonly-used, expected, or compromised passwords in IA-5 (1) (a). |
| CCI-004065 |
For password-based authentication, employ automated tools to assist the user in selecting strong password authenticators. |
Controls
| Number | Title |
|---|---|
| No controls are assigned to this check |