SV-234963r1009638: The SUSE operating system must generate audit records for all uses of the privileged functions. | SUSE Linux Enterprise Server 15 STIG SCAP Benchmark

Loading benchmark…

Assessment Title

Rule Text

The SUSE operating system must generate audit records for all uses of the privileged functions.

Description

Discussion Text

Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious and ongoing concern and can have significant adverse impacts on organizations. Auditing the use of privileged functions is one way to detect such misuse and identify the risk from insider threats and the advanced persistent threat. Satisfies: SRG-OS-000327-GPOS-00127, SRG-OS-000337-GPOS-00129, SRG-OS-000348-GPOS-00136, SRG-OS-000349-GPOS-00137, SRG-OS-000350-GPOS-00138, SRG-OS-000351-GPOS-00139, SRG-OS-000352-GPOS-00140, SRG-OS-000353-GPOS-00141, SRG-OS-000354-GPOS-00142, SRG-OS-000358-GPOS-00145, SRG-OS-000359-GPOS-00146, SRG-OS-000365-GPOS-00152

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

IA Controls

NIST SP 800-53

Not mappedCCI-003938Not mappedCCI-001875Not mappedCCI-001877Not mappedCCI-001878Not mappedCCI-001879Not mappedCCI-001880Not mappedCCI-001881Not mappedCCI-001882Not mappedCCI-001889Not mappedCCI-001914Not mappedCCI-002234Not mappedCCI-001814

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:202
# The SUSE operating system must generate audit records for all uses of the privileged functions.
# 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+(always,exit|exit,always)\s+-F\s+arch=b32\s+(.*(-S\s+execve\s+|(\s+|,)execve(\s+|,))).*-C\s+uid!=euid\s+-F\s+euid=0\s*(\s+(-k\s+|-F\s+key=)\S+)*\s*$' '/etc/audit/audit.rules' &>/dev/null
}
# textfilecontent54_object (textfilecontent54_test)
test_2() {
  grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(.*(-S\s+execve\s+|(\s+|,)execve(\s+|,))).*-C\s+uid!=euid\s+-F\s+euid=0\s*(\s+(-k\s+|-F\s+key=)\S+)*\s*$' '/etc/audit/audit.rules' &>/dev/null
}
# textfilecontent54_object (textfilecontent54_test)
test_3() {
  grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b32\s+(.*(-S\s+execve\s+|(\s+|,)execve(\s+|,))).*-C\s+gid!=egid\s+-F\s+egid=0\s*(\s+(-k\s+|-F\s+key=)\S+)*\s*$' '/etc/audit/audit.rules' &>/dev/null
}
# textfilecontent54_object (textfilecontent54_test)
test_4() {
  grep -Pq '^\s*-a\s+(always,exit|exit,always)\s+-F\s+arch=b64\s+(.*(-S\s+execve\s+|(\s+|,)execve(\s+|,))).*-C\s+gid!=egid\s+-F\s+egid=0\s*(\s+(-k\s+|-F\s+key=)\S+)*\s*$' '/etc/audit/audit.rules' &>/dev/null
}

if ( test_1 && test_2 && test_3 && test_4 ); 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.sles15:def:202
if [ ! -f "/etc/audit/audit.rules" ]; then echo "PASS"; exit 0; fi; grep -q "^\\s*-a\\s+(always,exit|exit,always)\\s+-F\\s+arch=b32\\s+(.*(-S\\s+execve\\s+|(\\s+|,)execve(\\s+|,))).*-C\\s+uid != euid\\s+-F\\s+euid=0\\s*" "/etc/audit/audit.rules" && grep -q "^\\s*-a\\s+(always,exit|exit,always)\\s+-F\\s+arch=b64\\s+(.*(-S\\s+execve\\s+|(\\s+|,)execve(\\s+|,))).*-C\\s+uid != euid\\s+-F\\s+euid=0\\s*" "/etc/audit/audit.rules" && grep -q "^\\s*-a\\s+(always,exit|exit,always)\\s+-F\\s+arch=b32\\s+(.*(-S\\s+execve\\s+|(\\s+|,)execve(\\s+|,))).*-C\\s+gid != egid\\s+-F\\s+egid=0\\s*" "/etc/audit/audit.rules" && grep -q "^\\s*-a\\s+(always,exit|exit,always)\\s+-F\\s+arch=b64\\s+(.*(-S\\s+execve\\s+|(\\s+|,)execve(\\s+|,))).*-C\\s+gid != egid\\s+-F\\s+egid=0\\s*" "/etc/audit/audit.rules" || echo "FAIL"; exit 1

Remediation

Configure the SUSE operating system to generate an audit record for any privileged use of the "execve" system call.

Add or update the following rules in "/etc/audit/rules.d/audit.rules":

-a always,exit -F arch=b32 -S execve -C uid!=euid -F euid=0 -k setuid
-a always,exit -F arch=b64 -S execve -C uid!=euid -F euid=0 -k setuid
-a always,exit -F arch=b32 -S execve -C gid!=egid -F egid=0 -k setgid
-a always,exit -F arch=b64 -S execve -C gid!=egid -F egid=0 -k setgid

To reload the rules file, restart the audit daemon:

> sudo systemctl restart auditd.service

or issue the following command:

> sudo augenrules --load