SV-274144r1120420: Amazon Linux 2023 must enforce a delay of at least four seconds between logon prompts following a failed logon attempt. | Amazon Linux 2023 STIG SCAP Benchmark

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Assessment Title

Rule Text

Amazon Linux 2023 must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.

Description

Discussion Text

Increasing the time between a failed authentication attempt and re-prompting to enter credentials helps to slow a single-threaded brute force attack.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366

References

DPMS Target Amazon Linux 2023 DISA DPMS Target Amazon Linux 2023 5700

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.amzlx23os:def:274144
# Amazon Linux 2023 must enforce a delay of at least four seconds between logon prompts following a failed logon attempt.
# 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: FAIL_DELAY = 4 or greater
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  [ "$(sed -En 's/^\s*FAIL_DELAY\s+(\d+)\s*$/\1/p' '/etc/login.defs')" -ge 4 ]
}

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.amzlx23os:def:274144

if [ ! -f "/etc/login.defs" ]; then echo "PASS"; exit 0; fi
if grep -qE "^\\s*FAIL_DELAY\\s+(4|\\d+)" /etc/login.defs; then echo "PASS"; exit 0; else echo "FAIL"; exit 1; fi

Remediation

Configure Amazon Linux 2023 to enforce a delay of at least four seconds between logon prompts following a failed console logon attempt.

Modify the "/etc/login.defs" file to set the "FAIL_DELAY" parameter to "4" or greater:

FAIL_DELAY 4