SV-234981r991589: The SUSE operating system must not disable syscall auditing. | SUSE Linux Enterprise Server 15 STIG SCAP Benchmark

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Assessment Title

Rule Text

The SUSE operating system must not disable syscall auditing.

Description

Discussion Text

By default, the SUSE operating system includes the "-a task,never" audit rule as a default. This rule suppresses syscall auditing for all tasks started with this rule in effect. Because the audit daemon processes the "audit.rules" file from the top down, this rule supersedes all other defined syscall rules; therefore no syscall auditing can take place on the operating system.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366

References

DPMS Target SUSE Linux Enterprise Server 15 DISA DPMS Target SUSE Linux Enterprise Server 15 5274

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.sles15:def:239
# The SUSE operating system must not disable syscall auditing.
# 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() {
  ! ( grep -Pq '^\s*-a\s+(?:task,never|never,task)\b' '/etc/audit/audit.rules' &>/dev/null )
}
# textfilecontent54_object (textfilecontent54_test)
test_2() {
  ! ( grep -rqP --include='*' '^\s*-a\s+(?:task,never|never,task)\b' '/etc/audit/rules.d' &>/dev/null )
}

if ( test_1 && test_2 ); 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.sles15:def:239

if grep -q '^\\s*-a\\s+(?:task,never|never,task)\\b' /etc/audit/audit.rules && grep -q '^\\s*-a\\s+(?:task,never|never,task)\\b' /etc/audit/rules.d/*.rules; then
    echo "FAIL"
    exit 1
else
    echo "PASS"
    exit 0
fi

Remediation

Remove the "-a task,never" rule from the /etc/audit/rules.d/audit.rules file.

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

> sudo systemctl restart auditd.service