SV-270731r1261476: Ubuntu 24.04 LTS must be able to enforce a 180-day maximum password lifetime restriction. | Canonical Ubuntu 24.04 LTS STIG SCAP Benchmark

Loading benchmark…

Assessment Title

Rule Text

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

Description

Discussion Text

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.

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-004066

References

DPMS Target Canonical Ubuntu 24.04 LTS DISA DPMS Target Canonical Ubuntu 24.04 LTS 5673

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

#!/bin/bash
# Reconstructed from oval:mil.disa.stig.ubuntu2404os:def:270731
# Ubuntu 24.04 LTS must be able to enforce a 180-day maximum password lifetime restriction.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# textfilecontent54_object (textfilecontent54_test)
test_1() {
  ( [ "$(sed -En 's/^[ \t]*PASS_MAX_DAYS[ \t]+(\d+)[ \t]*$/\1/p' '/etc/login.defs')" -gt 0 ] ) && ( [ "$(sed -En 's/^[ \t]*PASS_MAX_DAYS[ \t]+(\d+)[ \t]*$/\1/p' '/etc/login.defs')" -le 180 ] )
}

if test_1; then
  echo "PASS"
else
  echo "FAIL"
fi

Assessment Script Powered by AISandbox-executed

A standalone Shell script to assess this control automatically. Review before running it in your environment.

Syntax-checked and actually executed in an isolated sandbox (not the real system this checks) — confirmed to run without errors.

#!/bin/sh
# OVAL definition: oval:mil.disa.stig.ubuntu2404os:def:270731

if [ ! -f "/etc/login.defs" ]; then echo "PASS"; exit 0; fi
if grep -q "^[ \t]*PASS_MAX_DAYS[ \t]+(\\d\+)[ \t]*$" /etc/login.defs; then
    match=$(grep "^[ \t]*PASS_MAX_DAYS[ \t]*\\(\\d\+\\)[ \t]*$" /etc/login.defs | sed -r's/.*PASS_MAX_DAYS[ \t]+([^ ]+).*/\1/')
    if [ "$match" -gt 0 ] && [ "$match" -le 180 ]; then echo "PASS"; exit 0; fi
fi
echo "FAIL"; exit 1

Remediation

Configure Ubuntu 24.04 LTS to set noncompliant accounts to enforce a 180-day maximum password lifetime restriction.

$ sudo chage -M 180 [user]