Title

Users must not be able to change passwords more than once every 24 hours. (Cat II impact)

Discussion

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.

Check Content

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

Change the minimum time period between password changes for each user account to 1 day. # passwd -n 1 <user name>

Additional Identifiers

Rule ID: SV-44859r1_rule

Vulnerability ID: V-1032

Group Title: GEN000540

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.