The operating system must enforce minimum password lifetime restrictions.

From Solaris 11 SPARC Security Technical Implementation Guide

Associated with: CCI-000198

SV-60825r2_rule The operating system must enforce minimum password lifetime restrictions.

Vulnerability discussion

Passwords need to be changed at specific policy-based intervals; however, if the information system or application allows the user to immediately and continually change their password, then the password could be repeatedly changed in a short period of time, defeating the organization's policy regarding password reuse.

Check content

The root role is required. Check whether the minimum time period between password changes for each user account is 1 day or greater. # awk -F: '$4 < 1 {print $1}' /etc/shadow If any results are returned that are not associated with a system account, this is a finding. Check that /etc/default/password is configured to minimum password change time of 1 week. # grep "^MINWEEKS=" /etc/default/passwd If the command does not report MINWEEKS=1, this is a finding.

Fix text

The root role is required. # pfedit /etc/default/passwd file. Locate the line containing: MINWEEKS Change the line to read: MINWEEKS=1 Set the per-user minimum password change times by using the following command on each user account. # passwd -n [number of days] [accountname]

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