cis-ubuntu2004-v300-6-2-1-2

name	cis-ubuntu2004-v300-6-2-1-2
description	Ensure journald log file access is configured
category	cis-logging
version	3.0.0
author	cyberstrike-official
tags	["cis","ubuntu","linux","ubuntu-20.04","journald"]
cis_id	6.2.1.2
cis_benchmark	CIS Ubuntu Linux 20.04 LTS Benchmark v3.0.0
tech_stack	["ubuntu","linux"]
cwe_ids	[]
chains_with	[]
prerequisites	[]
severity_boost	{}

6.2.1.2 Ensure journald log file access is configured (Manual)

Profile

• Level 1 - Server
• Level 1 - Workstation

Description

Journald will create logfiles that do not already exist on the system. This setting controls what permissions will be applied to these newly created files.

Rationale

It is important to ensure that log files have the correct permissions to ensure that sensitive data is archived and protected.

Audit Procedure

Command Line

Run the following script to verify:

• systemd-journald logfiles are mode 0640 or more restrictive
• Directories /run/ and /var/lib/systemd/ are mode 0755 or more restrictive
• All other configured directories are mode 2755, 0750, or more restrictive

#!/usr/bin/env bash
{
    a_output=() a_output2=()
    l_systemd_config_file="/etc/tmpfiles.d/systemd.conf" l_analyze_cmd="$(readlink -f /bin/systemd-analyze)"
    f_file_chk()
    {
        l_maxperm="$( printf '%o' $(( 0777 & ~$1_perm_mask )) )"
        if [ $(( $l_mode & $l_perm_mask )) -le 0 ] || [[ "$l_type" = "Directory" && "$l_mode" =~ 275{0|5} ]];
    then
            a_out+=(" - $l_type \"$l_logfile\" access is:" \
            "     mode: \"$l_mode\", owned by: \"$l_user\", and group owned by: \"$l_group\"")
        else
            a_out2+=(" - $l_type \"$l_logfile\" access is:" \
            "     mode: \"\", owned by: \"\", and group owned by: \"\"" \
            )
        
    }
    
}