The Mainframe Product must automatically lock the account until the locked account is released by an administrator when three unsuccessful logon attempts in 15 minutes are exceeded.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-205547	SRG-APP-000345-MFP-000094	SV-205547r851315_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
Mainframe Product Security Requirements Guide	2022-09-22

Details

Check Text ( C-5813r299874_chk )
If the Mainframe Product has no function or capability for user logon, this is not applicable. If the Mainframe Product employs an external security manager for all account management functions, this is not applicable. Examine Mainframe Product configuration settings. Verify that the Mainframe Product account management setting automatically locks the account until the locked account is released by an administrator when three unsuccessful logon attempts in 15 minutes are exceeded. If it does not, this is a finding.

Check Text ( C-5813r299874_chk )

If the Mainframe Product has no function or capability for user logon, this is not applicable.

If the Mainframe Product employs an external security manager for all account management functions, this is not applicable.

Examine Mainframe Product configuration settings.

Verify that the Mainframe Product account management setting automatically locks the account until the locked account is released by an administrator when three unsuccessful logon attempts in 15 minutes are exceeded. If it does not, this is a finding.

Fix Text (F-5813r299875_fix)
Configure the Mainframe Product account management settings to automatically lock the account until the locked account is released by an administrator when three unsuccessful logon attempts in 15 minutes are exceeded.