SV-258144r1045286: All RHEL 9 remote access methods must be monitored. | Red Hat Enterprise Linux 9 STIG SCAP Benchmark

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Assessment Title

Rule Text

All RHEL 9 remote access methods must be monitored.

Description

Discussion Text

Logging remote access methods can be used to trace the decrease in the risks associated with remote user access management. It can also be used to spot cyberattacks and ensure ongoing compliance with organizational policies surrounding the use of remote access methods.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000067

References

DPMS Target Red Hat Enterprise Linux 9 DISA DPMS Target Red Hat Enterprise Linux 9 5551

Checks

DISA STIG (Manual Reference)

Verify that RHEL 9 monitors all remote access methods.

Check that remote access methods are being logged by running the following command:

$ grep -rE '(auth.\*|authpriv.\*|daemon.\*)' /etc/rsyslog.conf /etc/rsyslog.d/

/etc/rsyslog.conf:authpriv.*
 
If "auth.*", "authpriv.*" or "daemon.*" are not configured to be logged, this is a finding.

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.rhel9os:def:258144
# All RHEL 9 remote access methods must be monitored.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# rsyslog: auth.* is configured to be logged
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  ( grep -Pq '^[ \t]*(?:\S+;auth\.\*|auth\.\*;\S+|auth\.\*|\S+;auth\.\*;\S+)[ \t]+\S+\s*$' '/etc/rsyslog.conf' &>/dev/null ) || ( grep -rqP --include='*.conf' '^[ \t]*(?:\S+;auth\.\*|auth\.\*;\S+|auth\.\*|\S+;auth\.\*;\S+)[ \t]+\S+\s*$' '/etc/rsyslog.d' &>/dev/null )
}
# rsyslog: authpriv.* is configured to be logged
# textfilecontent54_object (textfilecontent54_test)
test_2() {
  ( grep -Pq '^[ \t]*(?:\S+;authpriv\.\*|authpriv\.\*;\S+|authpriv\.\*|\S+;authpriv\.\*;\S+)[ \t]+\S+\s*$' '/etc/rsyslog.conf' &>/dev/null ) || ( grep -rqP --include='*.conf' '^[ \t]*(?:\S+;authpriv\.\*|authpriv\.\*;\S+|authpriv\.\*|\S+;authpriv\.\*;\S+)[ \t]+\S+\s*$' '/etc/rsyslog.d' &>/dev/null )
}
# rsyslog: daemon.* is configured to be logged
# textfilecontent54_object (textfilecontent54_test)
test_3() {
  ( grep -Pq '^[ \t]*(?:\S+;daemon\.\*|daemon\.\*;\S+|daemon\.\*|\S+;daemon\.\*;\S+)[ \t]+\S+\s*$' '/etc/rsyslog.conf' &>/dev/null ) || ( grep -rqP --include='*.conf' '^[ \t]*(?:\S+;daemon\.\*|daemon\.\*;\S+|daemon\.\*|\S+;daemon\.\*;\S+)[ \t]+\S+\s*$' '/etc/rsyslog.d' &>/dev/null )
}

if ( test_1 && test_2 && test_3 ); 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
# DISA STIG RHEL 9OS: All RHEL 9 remote access methods must be monitored
if [ ! -f "/etc/rsyslog.conf" ]; then echo "PASS"; exit 0; fi
grep -q "^[ \t]*(?:\\S+;auth\\.\\*|auth\\.\\*;\\S+|auth\\.\\*|\\S+;auth\\.\\*;\\S+)[ \t]+\\S+\\s*$" /etc/rsyslog.conf || { echo "FAIL"; exit 1; }
grep -q "^[ \t]*(?:\\S+;authpriv\\.\\*|authpriv\\.\\*;\\S+|authpriv\\.\\*|\\S+;authpriv\\.\\*;\\S+)[ \t]+\\S+\\s*$" /etc/rsyslog.conf || { echo "FAIL"; exit 1; }
grep -q "^[ \t]*(?:\\S+;daemon\\.\\*|daemon\\.\\*;\\S+|daemon\\.\\*|\\S+;daemon\\.\\*;\\S+)[ \t]+\\S+\\s*$" /etc/rsyslog.conf || { echo "FAIL"; exit 1; }
echo "PASS"; exit 0

Remediation

Add or update the following lines to the "/etc/rsyslog.conf" file or a file in "/etc/rsyslog.d":

auth.*;authpriv.*;daemon.* /var/log/secure

The "rsyslog" service must be restarted for the changes to take effect with the following command:

$ sudo systemctl restart rsyslog.service