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More rules for linux

Linux distributions

TMA-SLES15-6.3.4.3

Ensure audit log files owner is configured

LowLevel 2Automatedlinux

Description

Audit log files contain information about the system and system activity.

How it is checked

Audit method: Shell command

shell
alt0() { o=$(bash -c '#!/usr/bin/env bash

{
   l_output="" l_output2=""
   if [ -e "/etc/audit/auditd.conf" ]; then
      l_audit_log_directory="$(dirname "$(awk -F= '"'"'/^\s*log_file\s*/{print $2}'"'"' /etc/audit/auditd.conf | xargs)")"
      if [ -d "$l_audit_log_directory" ]; then
         while IFS= read -r -d $'"'"'\0'"'"' l_file; do
            l_output2="$l_output2\n  - File: \"$l_file\" is owned by user: \"$(stat -Lc '"'"'%U'"'"' "$l_file")\"\n     (should be owned by user: \"root\")\n"
         done < <(find "$l_audit_log_directory" -maxdepth 1 -type f ! -user root -print0)
      else
         l_output2="$l_output2\n  - Log file directory not set in \"/etc/audit/auditd.conf\" please set log file directory"
      fi
   else
      l_output2="$l_output2\n  - File: \"/etc/audit/auditd.conf\" not found.\n  - ** Verify auditd is installed **"
   fi
   if [ -z "$l_output2" ]; then
      l_output="$l_output\n  - All files in \"$l_audit_log_directory\" are owned by user: \"root\"\n"
      echo -e "\n- Audit Result:\n  ** PASS **\n - * Correctly configured * :$l_output"
   else
      echo -e "\n- Audit Result:\n  ** FAIL **\n - * Reasons for audit failure * :$l_output2\n"
   fi
}' 2>&1); printf '%s\n' "$o" | grep -q '\*\* PASS \*\*' || { echo "step1: script did not report PASS"; return 1; }; }; if alt0; then echo compliant; fi
Expected output
compliant

How it is fixed

Fix method: Guidance or infrastructure patch

Run the following command to configure the audit log files to be owned by the root user: # [ -f /etc/audit/auditd.conf ] && find "$(dirname $(awk -F "=" '/^\s*log_file/ {print $2}' /etc/audit/auditd.conf | xargs))" -type f ! -user root -exec chown root {} +

Properties

Operating systems
sles-15
Tags
cis-convertedlinux
Reference
CIS SUSE Linux Enterprise 15 Benchmark v2.0.1 - 6.3.4.3

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell
tmaegis scan --target linux --level 2