CA-ACF2 PSWD GSO record value must be set to limit three consecutive invalid logon attempts by a user during a 15-minute time period.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223461	ACF2-ES-000420	SV-223461r533198_rule		Medium

Description
By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

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

Details

Check Text ( C-25134r500515_chk )
From the ISPF Command Shell to enter the ACF2 Command Shell enter: ACF Enter: SHOW STATE If "MAXTRY = 3", this is not a finding.

Fix Text (F-25122r500516_fix)
Configure the GSO option "MAXTRY" to equal "3".