SV-260572r971535: Ubuntu 22.04 LTS must encrypt all stored passwords with a FIPS 140-3-approved cryptographic hashing algorithm. | Canonical Ubuntu 22.04 LTS STIG SCAP Benchmark

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Assessment Title

Rule Text

Ubuntu 22.04 LTS must encrypt all stored passwords with a FIPS 140-3-approved cryptographic hashing algorithm.

Description

Discussion Text

Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000803

References

DPMS Target Canonical Ubuntu 22.04 LTS DISA DPMS Target Canonical Ubuntu 22.04 LTS 5594

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.ubuntu2204os:def:260572
# Ubuntu 22.04 LTS must encrypt all stored passwords with a FIPS 140-3-approved cryptographic hashing algorithm.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# /etc/login.defs:ENCRYPT_METHOD >= SHA512
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  (sed -En 's/^\s*ENCRYPT_METHOD\s+([^#\r\n]*)/\1/p' '/etc/login.defs') | grep -qxF 'SHA512'
}

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.ubuntu2204os:def:260572
if [ ! -f "/etc/login.defs" ]; then echo "PASS"; exit 0; fi
if grep -q "^\\s*ENCRYPT_METHOD\\s+SHA512" /etc/login.defs; then echo "PASS"; exit 0; else echo "FAIL"; exit 1; fi

Remediation

Configure Ubuntu 22.04 LTS to encrypt all stored passwords.   
  
Add or modify the following line in the "/etc/login.defs" file: 
  
ENCRYPT_METHOD SHA512