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UBTU-24-400310 Ubuntu 24.04 LTS must be able to enforce a 180-day maximum password lifetime restriction.

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

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

Title

Ubuntu 24.04 LTS must be able to enforce a 180-day maximum password lifetime restriction.

Control

Verify Ubuntu 24.04 LTS enforces a 180-day maximum password lifetime for new user accounts with the following command: $ grep -i ^PASS_MAX_DAYS /etc/login.defs PASS_MAX_DAYS 180 If the "PASS_MAX_DAYS" parameter value is less than "180" or is commented out, this is a finding.

Discussion

Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If Ubuntu 24.04 LTS does not limit the lifetime of passwords and force users to change their passwords, there is the risk that Ubuntu 24.04 LTS passwords could be compromised.

Related controls

CCI-004066

Fix

Configure Ubuntu 24.04 LTS to enforce a 180-day maximum password lifetime. Add or modify the following line in the "/etc/login.defs" file: PASS_MAX_DAYS 180