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.rhel9os:def:257992
# RHEL 9 must not allow a noncertificate trusted host SSH logon to the system.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.
# HostbasedAuthentication is set to no in /etc/ssh/sshd_config and /etc/ssh/sshd_config.d/*.conf
# textfilecontent54_object (textfilecontent54_test)
test_1() {
( (sed -En 's/^(?i)\s*HostbasedAuthentication\s+(\w+)$/\1/p' '/etc/ssh/sshd_config') | grep -Pq '^(no|"no")$' ) || ( (grep -rhP --include='*.conf' '^(?i)\s*HostbasedAuthentication\s+(\w+)$' '/etc/ssh/sshd_config.d' | sed -En 's/^(?i)\s*HostbasedAuthentication\s+(\w+)$/\1/p') | grep -Pq '^(no|"no")$' )
}
if test_1; then
echo "PASS"
else
echo "FAIL"
fi Assessment Script Powered by AISandbox-executed
A standalone Shell script to assess this control automatically. Review before running it in your environment.
Syntax-checked and actually executed in an isolated sandbox (not the real system this checks) — confirmed to run without errors.
#!/bin/sh
# oval:mil.disa.stig.rhel9os:def:257992
if [ ! -f "/etc/ssh/sshd_config" ] && [ ! -f "/etc/ssh/sshd_config.d/*.conf" ]; then echo "PASS"; exit 0; fi
if grep -qE "^[[:space:]]*HostbasedAuthentication[[:space:]]+no$" /etc/ssh/sshd_config && grep -qE "^[[:space:]]*HostbasedAuthentication[[:space:]]+no$" /etc/ssh/sshd_config.d/*.conf; then echo "PASS"; exit 0; fi
echo "FAIL"; exit 1