path: root/plugins/plugin_systemd_phase1

#!/bin/sh

#########################################################################
#
# This component is part of Lynis Enterprise. No parts may be copied,
# distributed or used without written permission of CISOfy. Users who
# have an active license are permitted to use this component as part
# of the service. This software component may only be used in combination
# with Lynis and Lynis Enterprise.
#
# Copyright 2016, CISOfy - https://cisofy.com
#
#########################################################################
#
#    * DO NOT REMOVE *
#-----------------------------------------------------
# PLUGIN_AUTHOR=Michael Boelen <michael.boelen@cisofy.com>
# PLUGIN_CATEGORY=essentials
# PLUGIN_DATE=2017-04-30
# PLUGIN_DESC=Tests related to systemd tooling
# PLUGIN_NAME=systemd
# PLUGIN_PACKAGE=community
# PLUGIN_REQUIRED_TESTS=
# PLUGIN_VERSION=1.0.2
#-----------------------------------------------------
#
#########################################################################
#
    SYSTEMD_COREDUMP_USED=0
    SYSTEMD_FSS_FILE=""
    SYSTEMD_MACHINEID=""
    SYSTEMD_RUNNING=0
    SYSTEMD_VERSION=0
#
#########################################################################
#
    # Test        : PLGN-3800
    # Description : Gather systemctl exit code
    if [ ! "${SYSTEMCTLBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3800 --preqs-met ${PREQS_MET} --weight L --network NO --description "Gather systemctl exit code" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=$(${SYSTEMCTLBINARY} > /dev/null)
        if [ $? -gt 0 ]; then
            Report "systemctl_error_message=${FIND}"
        else
            SYSTEMD_RUNNING=1
        fi
        Report "systemctl_exit_code=$?"
    fi
#
#########################################################################
#
    # Test        : PLGN-3802
    # Description : Query systemd version and options
    # Notes       : version can also be gathered with systemctl show | grep ^Version=
    #               features with systemctl show | grep ^Features=
    if [ ! "${SYSTEMCTLBINARY}" = "" -a ${SYSTEMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3802 --preqs-met ${PREQS_MET} --weight L --network NO --description "Query systemd version and options" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=$(${SYSTEMCTLBINARY} --version 2> /dev/null | ${AWKBINARY} '{ if ($1=="systemd") { print $2 } }' | grep "^[1-9][0-9][0-9]$" | head -1)
        if [ ! "${FIND}" = "" ]; then
            SYSTEMD_VERSION=${FIND}
            Report "systemd_version=${FIND}"
            LogText "Result: found systemd version ${FIND}"
        fi
        FIND=`${SYSTEMCTLBINARY} --version 2> /dev/null | grep "^[-+]" | sed 's/[[:space:]]/,/g' | head -1`
        if [ ! "${FIND}" = "" ]; then
            Report "systemd_builtin_components=${FIND}"
            LogText "Result: found builtin components list"
        fi
    fi
#
#################################################################################
#
    # Test        : PLGN-3804
    # Description : Gather all systemd unit files
    if [ ! "${SYSTEMCTLBINARY}" = "" -a ${SYSTEMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3804 --preqs-met ${PREQS_MET} --weight L --network NO --description "Gather systemd unit files and their status" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=`${SYSTEMCTLBINARY} --no-legend list-unit-files 2> /dev/null | ${AWKBINARY} '{ print $1"|"$2"|" }'`
        if [ ! "${FIND}" = "" ]; then
            LogText "Result: found systemd unit files via systemctl list-unit-files"
            for I in ${FIND}; do
                LogText "Output: ${I}"
                Report "systemd_unit_file[]=${I}"
            done
        fi
    fi
#
#################################################################################
#
    # Test        : PLGN-3806
    # Description : Gather all failed systemd units
    if [ ! "${SYSTEMCTLBINARY}" = "" -a ${SYSTEMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3806 --preqs-met ${PREQS_MET} --weight L --network NO --description "Gather failed systemd units" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=`${SYSTEMCTLBINARY} --no-legend --state=failed 2> /dev/null | ${AWKBINARY} '{ if ($4=="failed" && $5=="failed") { print $2 } }'`
        if [ ! "${FIND}" = "" ]; then
            LogText "Result: found systemd unit files via systemctl list-unit-files"
            for I in ${FIND}; do
                LogText "Output: ${I}"
                Report "systemd_unit_file[]=${I}"
            done
        fi
    fi
#
#################################################################################
#
    # Test        : PLGN-3808
    # Description : Gather machine ID
    if [ -f /etc/machine-id -a ${SYSTEMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3808 --preqs-met ${PREQS_MET} --weight L --network NO --description "Gather systemd machine ID" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=$(cat /etc/machine-id | head -1)
        if [ ! "${FIND}" = "" ]; then
            SYSTEMD_MACHINEID="${FIND}"
            LogText "Result: found machine ID: ${SYSTEMD_MACHINEID}"
        fi
    fi
#
#################################################################################
#
    # Test        : PLGN-3810
    # Description : Query main systemd binaries
    if [ ! "${FINDBINARY}" = "" -a -d /usr/lib/systemd -a ${SYSTEMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3810 --preqs-met ${PREQS_MET} --weight L --network NO --description "Query main systemd binaries" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=$(${FINDBINARY} ${ROOTDIR}usr/lib/systemd -maxdepth 1 -type f -name "systemd-*" -printf "%f|")
        if [ ! "${FIND}" = "" ]; then
            Report "systemd_binaries=${FIND}"
            LogText "Result: found systemd binaries in /usr/lib/systemd"
        else
            LogText "Result: no binaries found in /usr/lib/systemd"
        fi
    fi
#
#################################################################################
#
    # Test        : PLGN-3812
    # Description : Query journal for boot related information
    if [ ! "${JOURNALCTLBINARY}" = "" -a ${SYSTEMD_RUNNING} -eq 1 -a ${SYSTEMD_VERSION} -ge 209 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3812 --preqs-met ${PREQS_MET} --weight L --network NO --description "Query journal for boot related information" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=$(${JOURNALCTLBINARY} --list-boots | wc -l)
        LogText "Output: number of boots listed in journal is ${FIND}"
        if [ ! "${FIND}" = "" ]; then Report "journal_bootlogs=${FIND}"; fi
        FIND=$(${JOURNALCTLBINARY} --list-boots | head -1 | awk '{ print $4 }')
        LogText "Output: oldest boot date in journal is ${FIND}"
        if [ ! "${FIND}" = "" ]; then Report "journal_oldest_bootdate=${FIND}"; fi
    fi
#
#################################################################################
#
    # Test        : PLGN-3814
    # Description : Journal integrity
    if [ ! "${JOURNALCTLBINARY}" = "" -a ${SYSTEMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3814 --preqs-met ${PREQS_MET} --weight L --network NO --description "Verify journal integrity" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=$(${JOURNALCTLBINARY} --verify 2>&1 | grep FAIL | sed 's/[[:space:]]/:space:/g')
        if [ ! "${FIND}" = "" ]; then
            Report "journal_contains_errors=1"
            for I in ${FIND}; do
                LINE=`echo ${I} | sed 's/:space:/ /g'`
                LogText "Output (fails): ${LINE}"
            done
          else
            Report "journal_contains_errors=0"
            LogText "Result: systemd journal has no errors"
       fi
    fi
#
#################################################################################
#
    # Test        : PLGN-3816
    # Description : Journal sizing
    if [ ! "${JOURNALCTLBINARY}" = "" -a ${SYSTEMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3816 --preqs-met ${PREQS_MET} --weight L --network NO --description "Query journal for boot related information" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=`${JOURNALCTLBINARY} --disk-usage | awk '{ if ($1=="Journals") { print $4 }}'`
        Report "journal_disk_size=${FIND}"
        LogText "Result: journals are ${FIND} in size"
    fi
#
#################################################################################
#
    # Test        : PLGN-3818
    # Description : Journal meta data
    if [ ! "${JOURNALCTLBINARY}" = "" -a ${SYSTEMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3818 --preqs-met ${PREQS_MET} --weight L --network NO --description "Query journal meta data" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=`${JOURNALCTLBINARY} --header | sed 's/^$/|/g' | tr '\n' ',' | sed 's/[[:space:]]//g'`
        Report "journal_meta_data=${FIND}"
    fi
#
#################################################################################
#
    # Test        : PLGN-3820
    # Description : Journal FSS (Forward Secure Sealing) configuration
    if [ ! "${JOURNALCTLBINARY}" = "" -a ! "${SYSTEMD_MACHINEID}" = "" -a ${SYSTEMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3820 --preqs-met ${PREQS_MET} --weight L --network NO --description "Check for journal FSS configuration" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FILE="/var/log/journal/${SYSTEMD_MACHINEID}/fss"
        if [ -f ${FILE} ]; then
            SYSTEMD_FSS_FILE="${FILE}"
            Report "journal_fss=1"
            Report "journal_fss_file=${SYSTEMD_FSS_FILE}"
        fi
    fi
#
#################################################################################
#
    # Test        : PLGN-3830
    # Description : Query systemd status
    if [ ! "${SYSTEMCTLBINARY}" = "" -a ${SYSTEMD_RUNNING} -eq 1 -a ${SYSTEMD_VERSION} -ge 215 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3830 --preqs-met ${PREQS_MET} --weight L --network NO --description "Query systemd status" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=$(${SYSTEMCTLBINARY} is-system-running 2> /dev/null | head -1)
        if [ ! "${FIND}" = "" ]; then
            Report "systemd_status=${FIND}"
            LogText "Result: found systemd status = ${FIND}"
        fi
    fi
#
#################################################################################
#
    # Test        : PLGN-3832
    # Description : Query processes which can not be found
    if [ ! "${SYSTEMCTLBINARY}" = "" -a ${SYSTEMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3832 --preqs-met ${PREQS_MET} --weight L --network NO --description "Query systemd status for processes which can not be found" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=`${SYSTEMCTLBINARY} --no-legend --all --state=not-found 2> /dev/null | awk '{ print $1 }'`
        if [ ! "${FIND}" = "" ]; then
            for I in ${FIND}; do
                Report "systemd_unit_not_found[]=${I}"
            done
        fi
    fi
#
#################################################################################
#
    # Test        : PLGN-3834
    # Description : Gather units from systemd which can not be found
    if [ ! "${SYSTEMCTLBINARY}" = "" -a ! "${AWKBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3834 --preqs-met ${PREQS_MET} --weight L --network NO --description "Collect service units which can not be found in systemd" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=`${SYSTEMCTLBINARY} list-units -t service --all | ${AWKBINARY} '{ if ($3=="not-found") { print $2 }}'`
        if [ ! "${FIND}" = "" ]; then
            LogText "Result: found one or more services with faulty state"
            for I in ${FIND}; do
                LogText "Result: service seems to be faulty (not-found) ${I}"
                Report "systemd_service_not_found[]=$I"
            done
        fi
    fi
#
#################################################################################
#
    # Test        : PLGN-3856
    # Description : Check if systemd-coredump is used
    if [ -f /proc/sys/kernel/core_pattern -a ${SYSTEMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3856 --preqs-met ${PREQS_MET} --weight L --network NO --description "Check if systemd-coredump is used" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        SYSTEMD_COREDUMP_USED=1
        FIND=`cat /proc/sys/kernel/core_pattern | grep systemd-coredump`
        if [ ! "${FIND}" = "" ]; then
            LogText "Result: systemd uses systemd-coredump to handle coredumps"
            Report "systemd_coredump_used=1"
        fi
    fi
#
#################################################################################
#
    # Test        : PLGN-3858
    # Description : Check if coredumps are placed on disk or in the journal
    # Notes       : systemd 215+
#
#################################################################################
#
    # Test        : PLGN-3860
    # Description : Query coredumps from journalctl since Yesterday
    if [ ! "${JOURNALCTLBINARY}" = "" -a ${SYSTEMD_COREDUMP_USED} -eq 1 -a ${SYSTEMD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no PLGN-3860 --preqs-met ${PREQS_MET} --weight L --network NO --description "Query coredumps from journals since Yesterday" --progress
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=$(${JOURNALCTLBINARY} SYSLOG_IDENTIFIER=systemd-coredump --since=yesterday -o cat 2> /dev/null)
        if [ ! "${FIND}" = "" ]; then
            Report "journal_coredumps_lastday=1"
            LogText "Result: found recent coredumps"
        else
            Report "journal_coredumps_lastday=0"
            LogText "Result: found no coredumps"
        fi
    fi
#
#################################################################################
#

# coredumpctl info (systemd 215+)
# coredumpctl -1 (systemd 215+)
# systemd-timesyncd (systemd 213+)
# systemctl list-machines (systemd 212+)
# systemd-journal-remote (systemd 212+)
# systemctl list-timers (systemd 209+)
# systemctl cat (systemd 209+)

#EOF