Users must not be able to change passwords more than once every 24 hours.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-1032	GEN000540	SV-37239r1_rule	ECSC-1	Medium

Description
The ability to change passwords frequently facilitates users reusing the same password. This can result in users effectively never changing their passwords. This would be accomplished by users changing their passwords when required and then immediately changing it to the original value.

STIG	Date
Red Hat Enterprise Linux 5 Security Technical Implementation Guide	2017-03-01

Details

Check Text ( C-35931r1_chk )
Check the minimum time period between password changes for each user account is 1 day. # cat /etc/shadow | cut -d ':' -f 4 | grep -v 1 If any results are returned, this is a finding.

Fix Text (F-31186r1_fix)
Change the minimum time period between password changes for each user account to 1 day. # passwd -n 1