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Passwords for new users must be restricted to a 24 hours/1 day minimum lifetime.


Overview

Finding ID Version Rule ID IA Controls Severity
V-71925 RHEL-07-010230 SV-86549r1_rule Medium
Description
Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enforcement requirement. If users are allowed to immediately and continually change their password, the password could be repeatedly changed in a short period of time to defeat the organization's policy regarding password reuse.
STIG Date
Red Hat Enterprise Linux 7 Security Technical Implementation Guide 2017-07-08

Details

Check Text ( C-72157r1_chk )
Verify the operating system enforces 24 hours/1 day as the minimum password lifetime for new user accounts.

Check for the value of "PASS_MIN_DAYS" in "/etc/login.defs" with the following command:

# grep -i pass_min_days /etc/login.defs
PASS_MIN_DAYS 1

If the "PASS_MIN_DAYS" parameter value is not "1" or greater, or is commented out, this is a finding.
Fix Text (F-78277r1_fix)
Configure the operating system to enforce 24 hours/1 day as the minimum password lifetime.

Add the following line in "/etc/login.defs" (or modify the line to have the required value):

PASS_MIN_DAYS 1