The system must require at least four characters be changed between the old and new passwords during a password change.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22306	GEN000750	SV-38277r1_rule	IAIA-1 IAIA-2	Medium

Description
To ensure password changes are effective in their goals, the system must ensure old and new passwords have significant differences. Without significant changes, new passwords may be easily guessed based on the value of a previously compromised password.

STIG	Date
HP-UX 11.23 Security Technical Implementation Guide	2013-07-02

Details

Check Text ( C-36293r1_chk )
HP-UX by default does not currently support enforcement of minimum number of changed characters required during a password change. This is a finding.

Fix Text (F-31550r1_fix)
Consult site documentation for the required setting specifying the minimum number of changed characters required during a password change. Change the policy statement/setting to 4.