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V-260545

CAT II (Medium)

Ubuntu 22.04 LTS must enforce 24 hours/one day as the minimum password lifetime. Passwords for new users must have a 24 hours/one day minimum password lifetime restriction.

Rule ID

SV-260545r1015007_rule

STIG

Canonical Ubuntu 22.04 LTS Security Technical Implementation Guide

Version

V2R8

CCIs

CCI-004066 CCI-000198

Discussion

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, then the password could be repeatedly changed in a short period of time to defeat the organization's policy regarding password reuse.

Check Content

Verify Ubuntu 22.04 LTS enforces a 24 hours/one day minimum password lifetime for new user accounts by using the following command:  
  
     $ grep -i pass_min_days /etc/login.defs 
     PASS_MIN_DAYS    1  
  
If "PASS_MIN_DAYS" is less than "1", is commented out, or is missing, this is a finding.

Fix Text

Configure Ubuntu 22.04 LTS to enforce a 24 hours/one day minimum password lifetime.  
  
Add or modify the following line in the "/etc/login.defs" file:  
  
PASS_MIN_DAYS    1