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-97619	ACF2-ES-000420	SV-106723r1_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	2020-06-29

Details

Check Text ( C-96453r1_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-103295r1_fix)
Configure the GSO option "MAXTRY" to equal "3".