SV-204508r958754: The Red Hat Enterprise Linux operating system must label all off-loaded audit logs before sending them to the central log server. | Red Hat Enterprise Linux 7 STIG SCAP Benchmark

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Assessment Title

Rule Text

The Red Hat Enterprise Linux operating system must label all off-loaded audit logs before sending them to the central log server.

Description

Discussion Text

Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common process in information systems with limited audit storage capacity. One method of off-loading audit logs in Red Hat Enterprise Linux is with the use of the audisp-remote dameon. When audit logs are not labeled before they are sent to a central log server, the audit data will not be able to be analyzed and tied back to the correct system. Satisfies: SRG-OS-000342-GPOS-00133, SRG-OS-000479-GPOS-00224

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

IA Controls

NIST SP 800-53

Not mappedCCI-001851SV-95733V-81021

References

DPMS Target Red Hat Enterprise Linux 7 DISA DPMS Target Red Hat Enterprise Linux 7 2899

Checks

DISA STIG (Manual Reference)

Verify the audisp daemon is configured to label all off-loaded audit logs:

# grep "name_format" /etc/audisp/audispd.conf

name_format = hostname

If the "name_format" option is not "hostname", "fqd", or "numeric", or the line is commented out, ask the System Administrator to indicate how the audit logs are off-loaded to a different system or storage media, and to indicate if the logs are labeled appropriately.

If there is no evidence that the system is configured to off-load audit logs to a different system or storage media, or if the configuration does not appropriately label logs before they are off-loaded, 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.rhel7:def:95733
# The Red Hat Enterprise Linux operating system must label all off-loaded audit logs before sending them to the central log server.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# name_format in /etc/audisp/audispd.conf is set to hostname, fqd, or numeric
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  (sed -En 's/(?i)^\s*name_format[ ]*=[ ]*([\w]+)\s*/\1/p' '/etc/audisp/audispd.conf') | grep -Pq '(?i)^hostname|fqd|numeric$'
}

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.rhel7:def:95733

if grep -qE '^\s*name_format[ ]*=[ ]*hostname' /etc/audisp/audispd.conf || \
   grep -qE '^\s*name_format[ ]*=[ ]*fqd' /etc/audisp/audispd.conf || \
   grep -qE '^\s*name_format[ ]*=[ ]*numeric' /etc/audisp/audispd.conf; then
    echo "PASS"
    exit 0
else
    echo "FAIL"
    exit 1
fi

Remediation

Edit the /etc/audisp/audispd.conf file and add or update the "name_format" option:

name_format = hostname

The audit daemon must be restarted for changes to take effect:

# service auditd restart