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UBTU-24-400300 Ubuntu 24.04 LTS must enforce 24 hours/1 day as the minimum password lifetime. Passwords for new users must have a 24 hours/1 day minimum password lifetime restriction.

DISA STIG library V1R7
All changes in this version
first version loaded CAT II

Maps to IA-5(1) via CCI-004065, CCI-004066

Title

Ubuntu 24.04 LTS must enforce 24 hours/1 day as the minimum password lifetime. Passwords for new users must have a 24 hours/1 day minimum password lifetime restriction.

Control

Verify Ubuntu 24.04 LTS enforces a 24 hours/1 day minimum password lifetime for new user accounts with the following command: $ grep -i ^PASS_MIN_DAYS /etc/login.defs PASS_MIN_DAYS 1 If the "PASS_MIN_DAYS" parameter value is less than "1" or is commented out, this is a finding.

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. Satisfies: SRG-OS-000075-GPOS-00043, SRG-OS-000730-GPOS-00190

Related controls

CCI-004065, CCI-004066

Fix

Configure Ubuntu 24.04 LTS to enforce a 24 hours/1 day minimum password lifetime. Add or modify the following line in the "/etc/login.defs" file: PASS_MIN_DAYS 1