The CA-TSS PTHRESH Control Option must be properly set.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223971	TSS0-ES-000980	SV-223971r856108_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-forcing, is reduced. Limits are imposed by locking the account.

STIG	Date
IBM z/OS TSS Security Technical Implementation Guide	2022-09-19

Details

Check Text ( C-25644r516312_chk )
From the ISPF Command Shell enter: TSS MODIFY STATUS If the PTHRESH Control Option value is not set to "PTHRESH(2)", this is a finding.

Fix Text (F-25632r516313_fix)
Evaluate the impact associated with implementation of the control option. Develop a plan of action to implement the control option setting as specified following and proceed with the change. PTHRESH(2)