The Mainframe Product must require the change of at least 8 of the total number of characters when passwords are changed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-68383	SRG-APP-000170-MFP-000232	SV-82873r1_rule		Medium

Description
If the application allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password compromise by increasing the window of opportunity for attempts at guessing and brute-force attacks. The number of changed characters refers to the number of changes required with respect to the total number of positions in the current password. In other words, characters may be the same within the two passwords; however, the positions of the like characters must be different.

Description

If the application allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password compromise by increasing the window of opportunity for attempts at guessing and brute-force attacks. The number of changed characters refers to the number of changes required with respect to the total number of positions in the current password. In other words, characters may be the same within the two passwords; however, the positions of the like characters must be different.

STIG	Date
Mainframe Product Security Requirements Guide	2019-10-08

Details

Check Text ( C-68913r1_chk )
If the Mainframe Product employs an external security manager (ESM) for all account management functions, this is not applicable. Examine user account management configurations. If the Mainframe Product account management settings do not require the change of at least 8 of the total characters when passwords are changed, this is a finding.

Fix Text (F-74497r1_fix)
Configure the Mainframe Product account management settings to require the change of at least 8 of the total characters when passwords are changed.