SV-253089r958754: TOSS must take appropriate action when the internal event queue is full. | Tri-Lab Operating System Stack (TOSS) 4 STIG SCAP Benchmark

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Assessment Title

Rule Text

TOSS must take appropriate action when the internal event queue is full.

Description

Discussion Text

Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Offloading is a common process in information systems with limited audit storage capacity. TOSS installation media provides "rsyslogd." "rsyslogd" is a system utility providing support for message logging. Support for both internet and UNIX domain sockets enables this utility to support both local and remote logging. Couple this utility with "gnutls" (which is a secure communications library implementing the SSL, TLS, and DTLS protocols), and now there is a method to securely encrypt and offload auditing.

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

IA Controls

NIST SP 800-53

Not mappedCCI-001851

References

DPMS Target TOSS 4 DISA DPMS Target TOSS 4 5469

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.toss4os:def:253089
# TOSS must take appropriate action when the internal event queue is full.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# textfilecontent54_object (textfilecontent54_test)
test_1() {
  ( (sed -En 's/(?i)^\s*overflow_action\s*=\s*(\w+)\s*(?:#.*)?$/\1/p' '/etc/audit/auditd.conf') | grep -Pq '(?i)^syslog$' ) || ( (sed -En 's/(?i)^\s*overflow_action\s*=\s*(\w+)\s*(?:#.*)?$/\1/p' '/etc/audit/auditd.conf') | grep -Pq '(?i)^single$' ) || ( (sed -En 's/(?i)^\s*overflow_action\s*=\s*(\w+)\s*(?:#.*)?$/\1/p' '/etc/audit/auditd.conf') | grep -Pq '(?i)^halt$' )
}

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.toss4os:def:253089

if [ ! -f "/etc/audit/auditd.conf" ]; then
  echo "PASS"
  exit 0
fi

grep -q "^\\s*overflow_action\\s*=\\s*" /etc/audit/auditd.conf
if [ $? -eq 0 ]; then
  match=$(grep -i "^\\s*overflow_action\\s*=\\s*syslog\\s*$" /etc/audit/auditd.conf || true)
  grep -i "^\\s*overflow_action\\s*=\\s*single\\s*$" /etc/audit/auditd.conf || true
  grep -i "^\\s*overflow_action\\s*=\\s*halt\\s*$" /etc/audit/auditd.conf || true
  if [ -n "$match" ] || $? -eq 0; then
    echo "PASS"
    exit 0
  fi
fi

echo "FAIL"
exit 1

Remediation

Edit the /etc/audit/auditd.conf file and add or update the "overflow_action" option to one of "syslog", "single", or "halt":

overflow_action = syslog

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