Ensure audit tools mode is configured

BaixaNível 2Automatizadalinux

Descrição

Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators.

Como é verificado

Método de auditoria: Comando shell

shell

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

{
   l_output="" l_output2="" l_perm_mask="0022"
   l_maxperm="$( printf '"'"'%o'"'"' $(( 0777 & ~$l_perm_mask )) )"
   a_audit_tools=("/sbin/auditctl" "/sbin/aureport" "/sbin/ausearch" "/sbin/auditd" "/sbin/augenrules")
   for l_audit_tool in "${a_audit_tools[@]}"; do
      l_mode="$(stat -Lc '"'"'%#a'"'"' "$l_audit_tool")"
      if [ $(( "$l_mode" & "$l_perm_mask" )) -gt 0 ]; then
         l_output2="$l_output2\n - Audit tool \"$l_audit_tool\" is mode: \"$l_mode\" and should be mode: \"$l_maxperm\" or more restrictive"
      else
         l_output="$l_output\n - Audit tool \"$l_audit_tool\" is correctly configured to mode: \"$l_mode\""
      fi
   done
   if [ -z "$l_output2" ]; then
      echo -e "\n- Audit Result:\n  ** PASS **\n - * Correctly configured * :$l_output"
   else
      echo -e "\n- Audit Result:\n  ** FAIL **\n - * Reasons for audit failure * :$l_output2\n"
      [ -n "$l_output" ] && echo -e "\n - * Correctly configured * :\n$l_output\n"
   fi
   unset a_audit_tools
}' 2>&1); printf '%s\n' "$o" | grep -q '\*\* PASS \*\*' || { echo "step1: script did not report PASS"; return 1; }; }; if alt0; then echo compliant; fi

Saída esperada: compliant

Como é corrigido

Método de correção: Orientação ou patch de infraestrutura

Run the following command to remove more permissive mode from the audit tools: # chmod go-w /sbin/auditctl /sbin/aureport /sbin/ausearch /sbin/auditd /sbin/augenrules

Propriedades

Sistemas operacionais: sles-16
Tags: cis-convertedlinux
Referência: CIS SUSE Linux Enterprise 16 Benchmark v1.0.0 - 6.2.4.8

Verificar este host

Execute isto em uma máquina que você tenha permissão para auditar. A varredura é somente leitura.

shell

tmaegis scan --target linux --level 2