path: root/include/tests_boot_services

#!/bin/sh

#################################################################################
#
#   Lynis
# ------------------
#
# Copyright 2007-2014, Michael Boelen (michael@rootkit.nl), The Netherlands
# Web site: http://www.rootkit.nl
#
# Lynis comes with ABSOLUTELY NO WARRANTY. This is free software, and you are
# welcome to redistribute it under the terms of the GNU General Public License.
# See LICENSE file for usage of this software.
#
#################################################################################
#
# Category: Boot and services
#
#################################################################################
#
    InsertSection "Boot and services"
#
#################################################################################
#
    Display --indent 2 --text "- Checking boot loaders"
    BOOT_LOADER="Unknown"
#
#################################################################################
#
    # Test        : BOOT-5121
    # Description : Check for GRUB boot loader
    Register --test-no BOOT-5121 --weight L --network NO --description "Check for GRUB boot loader presence"
    if [ ${SKIPTEST} -eq 0 ]; then
        FOUND=0
        logtext "Test: Checking for presence GRUB conf file (/boot/grub/grub.conf or /boot/grub/menu.lst)..."
        if [ -f /boot/grub/grub.conf -o -f /boot/grub/menu.lst ]; then
            FOUND=1
            BOOT_LOADER="GRUB"
            Display --indent 4 --text "- Checking presence GRUB... " --result "OK" --color GREEN
            if [ -f /boot/grub/grub.conf ]; then GRUBCONFFILE="/boot/grub/grub.conf"; else GRUBCONFFILE="/boot/grub/menu.lst"; fi
            logtext "Found file ${GRUBCONFFILE}, proceeding with tests."
            FIND=`cat ${GRUBCONFFILE} | grep 'password --md5' | grep -v '^#'`
            FIND2=`cat ${GRUBCONFFILE} | grep 'password --encrypted' | grep -v '^#'`
            if [ "${FIND}" = "" -a "${FIND2}" = "" ]; then
                Display --indent 6 --text "- Checking for password protection..." --result WARNING --color RED
                logtext "Result: Didn't find MD5/SHA1 hashed password line in GRUB boot file!"
                logtext "Risk: user can switch to single user mode by editing current menu items or bypassing them."
                logtext "Additional information: Do NOT use a plaintext password, since the grub.conf or menu.lst file is most likely to be world readable!"
                logtext "If an unsecured OS like DOS is used, add 'lock' below that entry and setup a password with the password option, to prevent direct system access."
                ReportWarning ${TEST_NO} "M" "No password set on GRUB bootloader"
                logtext "Tip: Run grub-crypt or grub-md5-crypt and create a hashed password. Add a line below the line timeout=<value>, add: password --md5 <password hash> or password --encrypted <password hash> for SHA1 encrypted password"
                AddHP 0 2
              else
                Display --indent 6 --text "- Checking for password protection..." --result OK --color GREEN
                logtext "Result: GRUB has password protection."
                AddHP 4 4
            fi
        fi

        # GRUB2 configuration file
        if [ -f /boot/grub/grub.cfg ]; then
            FOUND=1
            BOOT_LOADER="GRUB2"
            Display --indent 4 --text "- Checking presence GRUB2... " --result FOUND --color GREEN
            logtext "Result: found GRUB2 configuration file (/boot/grub/grub.cfg)"
            # YYY password check, when documentation of GRUB2 project is improved
            # YYY Add check permission check (600)
            ReportManual "${TEST_NO}:01"
        fi

        if [ ${FOUND} -eq 0 ]; then
            Display --indent 4 --text "- Checking presence GRUB... " --result "NOT FOUND" --color WHITE
            logtext "Result: no GRUB configuration file found."
        fi
    fi
#
#################################################################################
#
    # Test        : BOOT-5124
    # Description : Check for FreeBSD boot loader
    Register --test-no BOOT-5124 --os FreeBSD --weight L --network NO --description "Check for FreeBSD boot loader presence"
    if [ ${SKIPTEST} -eq 0 ]; then
        if [ -f /boot/boot1 -a -f /boot/boot2 -a -f /boot/loader ]; then
            logtext "Result: found boot1, boot2 and loader files in /boot"
            Display --indent 4 --text "- Checking presence FreeBSD loader" --result FOUND --color GREEN
            BOOT_LOADER="FreeBSD"
          else
            logtext "Result: Not all expected files found in /boot"
            Display --indent 4 --text "- Checking presence FreeBSD loader" --result "NOT FOUND" --color WHITE	  
        fi
    fi
#
#################################################################################
#
    # Test        : BOOT-5126
    # Description : Check for NetBSD boot loader
    Register --test-no BOOT-5126 --os NetBSD --weight L --network NO --description "Check for NetBSD boot loader presence"
    if [ ${SKIPTEST} -eq 0 ]; then
        if [ -f /boot.${HARDWARE} -o -f /boot -o -f /ofwboot ]; then
            logtext "Result: found NetBSD secondary bootstrap"
            Display --indent 4 --text "- Checking presence NetBSD loader" --result FOUND --color GREEN
            BOOT_LOADER="NetBSD"
          else
            logtext "Result: NetBSD secondary bootstrap not found"
            Display --indent 4 --text "- Checking presence FreeBSD loader" --result "NOT FOUND" --color YELLOW 
            ReportException "${TEST_NO}:1" "No boot loader found on NetBSD"
        fi
    fi
#
#################################################################################
#
    # Test        : BOOT-5139
    # Description : Check for LILO boot loader
    # Notes       : password= or password =
    Register --test-no BOOT-5139 --weight L --network NO --description "Check for LILO boot loader presence"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: checking for presence LILO configuration file..."
        if [ -f /etc/lilo.conf ]; then
            BOOT_LOADER="LILO"
            Display --indent 4 --text "- Checking presence LILO... " --result "OK" --color GREEN
            logtext "Checking password option LILO..."
            FIND=`cat /etc/lilo.conf | ${EGREPBINARY} 'password[[:space:]]?=' | grep -v "^#"`
            if [ "${FIND}" = "" ]; then
                Display --indent 6 --text "- Password option presence " --result "WARNING" --color RED
                logtext "Result: no password set for LILO. Bootloader is unprotected to"
                logtext "dropping to single user mode or unauthorized access to devices/data."
                ReportSuggestion ${TEST_NO} "Add a password to LILO, by adding a line to the lilo.conf file, above the first line saying 'image=<name>': password=<password>"
                ReportWarning ${TEST_NO} "M" "No password set on LILO bootloader"
                AddHP 0 2
              else
                Display --indent 6 --text "- Password option presence " --result "OK" --color GREEN
                logtext "Result: LILO password option set"
                AddHP 4 4
            fi
            #YYY (making /etc/lilo.conf immutable is a good idea, chattr +i /etc/lilo.conf)
          else
            Display --indent 4 --text "- Checking presence LILO... " --result "NOT FOUND" --color WHITE
            logtext "Result: LILO configuration file not found"
        fi
    fi
#
#################################################################################
#
    # Test        : BOOT-5142
    # Description : Check for SILO boot loader
    Register --test-no BOOT-5142 --weight L --network NO --description "Check SPARC Improved boot loader (SILO)"
    if [ ${SKIPTEST} -eq 0 ]; then
        if [ -f /etc/silo.conf ]; then
            logtext "Result: Found SILO configuration file (/etc/silo.conf)"
            Display --indent 4 --text "- Checking boot loader SILO" --result FOUND --color GREEN
            BOOT_LOADER="SILO"
          else
            logtext "Result: no SILO configuration file found."
            Display --indent 4 --text "- Checking boot loader SILO" --result "NOT FOUND" --color WHITE
        fi
    fi
#
#################################################################################
#
    # Test        : BOOT-5144
    # Description : Check for SILO boot loader consistency
    # Notes       : To be tested on Gentoo
#    Register --test-no BOOT-5144 --weight L --network NO --description "Check SPARC Improved boot loader (SILO)"
#    if [ ${SKIPTEST} -eq 0 ]; then
#        if [ -f /etc/silo.conf -a -x /sbin/silo ]; then
#            FIND=`/sbin/silo | grep "appears to be valid"`
#            if [ ! "${FIND}" = "" ]; then
#                logtext "Result: Found SILO configuration file (/etc/silo.conf)"
#                Display --indent 6 --text "- Checking SILO consistency" --result OK --color GREEN
#              else
#                logtext "Result: no positive result received from silo binary"
#                ReportWarning ${TEST_NO} "Possible issue with boot loader (SILO)"
#                Display --indent 6 --text "- Checking SILO consistency" --result WARNING --color RED
#            fi
#        fi
#    fi
#
#################################################################################
#
    # Test        : BOOT-5155
    # Description : Check for YABOOT boot loader
    Register --test-no BOOT-5155 --weight L --network NO --description "Check for YABOOT boot loader configuration file"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: Check for /etc/yaboot.conf"
        if [ -f /etc/yaboot.conf ]; then
            logtext "Result: Found YABOOT configuration file (/etc/yaboot.conf)"
            Display --indent 4 --text "- Checking boot loader YABOOT" --result FOUND --color GREEN
            #YYY add permission check
            BOOT_LOADER="YABOOT"
          else
            logtext "Result: no YABOOT configuration file found."
            Display --indent 4 --text "- Checking boot loader YABOOT" --result "NOT FOUND" --color WHITE
        fi
    fi
#
#################################################################################
#
    # Test        : BOOT-5159
    # Description : Check for OpenBSD boot loader
    # More info   : only OpenBSD && i386 platform
    Register --test-no BOOT-5159 --os OpenBSD --platform i386 --weight L --network NO --description "Check for OpenBSD i386 boot loader presence"
    if [ ${SKIPTEST} -eq 0 ]; then
        if [ -f /etc/boot.conf ]; then
            Display --indent 2 --text "- Checking /etc/boot.conf..." --result "FOUND" --color GREEN
            FIND=`grep '^boot' /etc/boot.conf`
            if [ "${FIND}" = "" ]; then
                Display --indent 4 --text "- Checking boot option..." --result WARNING --color RED
                ReportSuggestion ${TEST_NO} "Add 'boot' to the /etc/boot.conf file to disable the default 5 seconds waiting time, to disallow booting into single user mode."
                ReportWarning ${TEST_NO} "M" "System can be booted into single user mode without password"
              else
                Display --indent 4 --text "- Checking boot option..." --result OK --color GREEN
                logtext "Ok, boot option is enabled."
            fi
          else
            Display --indent 2 --text "- Checking /etc/boot.conf..." --result "NOT FOUND" --color YELLOW
            logtext "Result: no /etc/boot.conf found. When using the default boot loader, physical"
            logtext "access to the server can be used to possibly enter single user mode."
            ReportSuggestion ${TEST_NO} "Add 'boot' to the /etc/boot.conf file to disable the default 5 seconds waiting time."
        fi
    fi
#
#################################################################################
#
    # Test        : BOOT-5165
    # Description : Check for FreeBSD boot services
    Register --test-no BOOT-5165 --os FreeBSD --weight L --network NO --description "Check for FreeBSD boot services"
    if [ ${SKIPTEST} -eq 0 ]; then
        # FreeBSD (Read /etc/rc.conf file for enabled services)
        logtext "Searching for services at startup (rc.conf)..."
        FIND=`egrep -v -i '^#|none' /etc/rc.conf | egrep -i '_enable.*(yes|on|1)' | sort | awk -F= '{ print $1 }' | sed 's/_enable//'`
        N=0
        for I in ${FIND}; do
            logtext "Found service (rc.conf): ${I}"
            report "boottask[]=${I}"
            N=`expr ${N} + 1`
        done
        Display --indent 2 --text "- Checking services at startup (rc.conf)..." --result "DONE" --color GREEN
        Display --indent 6 --text "Result: found $N services/options set"
        logtext "Found $N services/options to run at startup"
    fi
#
#################################################################################
#
    # Test        : BOOT-5166
    # Description : Check for /etc/rc.local file (and contents)
#
#################################################################################
#
    # Test        : BOOT-5177
    # Description : Check for Linux boot services (systemd and chkconfig)
    # Notes       : We skip using chkconfig if systemd is being used.
    Register --test-no BOOT-5177 --os Linux --weight L --network NO --description "Check for Linux boot and running services"
    if [ ${SKIPTEST} -eq 0 ]; then
        CHECKED=0
        logtext "Test: checking presence systemctl binary"
        # Determine if we have systemctl on board
        if [ ! "${SYSTEMCTLBINARY}" = "" ]; then
            logtext "Result: systemctl binary found, trying that to discover information"
            # Running services
            logtext "Searching for running services (systemctl services only)"
            FIND=`${SYSTEMCTLBINARY} --full --type=service | awk '{ if ($4=="running") { print $1 } }' | awk -F. '{ print $1 }'`
            N=0
            report "running_service_tool=systemctl"
            for I in ${FIND}; do
                logtext "Found running service: ${I}"
                report "running_service[]=${I}"
                N=`expr ${N} + 1`
            done
            logtext "Suggestion: Run systemctl --full --type=service to see all services"
            Display --indent 2 --text "- Check running services (systemctl)... " --result "DONE" --color GREEN
            Display --indent 8 --text "Result: found $N running services"
            logtext "Result: Found $N enabled services"

            # Services at boot
            logtext "Searching for enabled services (systemctl services only)"
            FIND=`${SYSTEMCTLBINARY} list-unit-files --type=service | awk '{ if ($2=="enabled") { print $1 } }' | awk -F. '{ print $1 }'`
            N=0
            report "boot_service_tool=systemctl"
            for I in ${FIND}; do
                logtext "Found enabled service at boot: ${I}"
                report "boot_service[]=${I}"
                N=`expr ${N} + 1`
            done
            logtext "Suggestion: Run systemctl list-unit-files --type=service to see all services"
            Display --indent 2 --text "- Check enabled services at boot (systemctl)... " --result "DONE" --color GREEN
            Display --indent 8 --text "Result: found $N enabled services"
            logtext "Result: Found $N running services"

          else
            logtext "Result: systemctl binary not found, checking chkconfig binary"
            if [ ! "${CHKCONFIGBINARY}" = "" ]; then
                logtext "Result: chkconfig binary found, trying that to discover information"
                logtext "Searching for services at startup (chkconfig, runlevel 3 and 5)... "
                FIND=`${CHKCONFIGBINARY} --list | egrep '3:on|5:on' | awk '{ print $1 }'`
                N=0
                report "boot_service_tool=chkconfig"
                for I in ${FIND}; do
                    logtext "Found service (at boot, runlevel 3 or 5): ${I}"
                    report "boot_service[]=${I}"
                    N=`expr ${N} + 1`
                done
                logtext "Suggestion: Run chkconfig --list to see all services and disable unneeded services"
                Display --indent 2 --text "- Check services at startup (chkconfig)... " --result "DONE" --color GREEN
                Display --indent 8 --text "Result: found $N services"
                logtext "Result: Found $N services at startup"
              else
                logtext "Result: both systemctl and chkconfig not found. Skipping this test"
            fi
        fi
    fi
#
#################################################################################
#
    # Test        : BOOT-5178
    # Description : Check for Linux boot services (Red Hat style)
    #    if [ ! "${CHKCONFIGBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    #    Register --test-no BOOT-5178 --os Linux --preqs-met ${PREQS_MET} --weight L --network NO --description "Check for unneeded Linux boot services (Red Hat style)"
    #    if [ ${SKIPTEST} -eq 0 ]; then
    #	N=0
    #	N=`expr ${N} + 1`

	#* mctrans (if selinux is NOT enabled)
	#* restorecond (if selinux is NOT enabled) --> and is it really needed? 
	#
	# if profile is server, warn if found:
	#* pcscd (if profile=server)
	#* avahi-daemon
	#	Redhat: /etc/sysconfig/network
	#		check if NOZEROCONF=yes is available
	#
	#* xfs (if /usr/bin/startx is not found)
	#
	#if [ ! -f /etc/mdadm.conf -a ! -f /etc/mdadm/mdadm.conf ]; then
	#* mdmonitor
	#
	#
	#* firstboot
	#  Display warning if [ ! -f /etc/reconfigSys ]
	#    AND "RUN_FIRSTBOOT=YES" is NOT in /etc/sysconfig/firstboot
	#
	#* acpid
	#  Display warning if no modules are loaded (lsmod | grep -i acpi)
	#
	#
	#    fi
#
#################################################################################
#
    # Test        : BOOT-5180
    # Description : Check for Linux boot services (Debian style)
    if [ "${LINUX_VERSION}" = "Debian" -o "${LINUX_VERSION}" = "Ubuntu" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no BOOT-5180 --os Linux --preqs-met ${PREQS_MET} --weight L --network NO --description "Check for Linux boot services (Debian style)"
    if [ ${SKIPTEST} -eq 0 ]; then
        # YYY runlevel check
        sRUNLEVEL=`${RUNLEVELBINARY} | grep "N 2"`
        if [ ! "${sRUNLEVEL}" = "" ]; then
            FIND=`find /etc/rc2.d -type l -print | cut -d '/' -f4 | sed "s/S[0-9][0-9]//g" | sort`
            if [ ! "${FIND}" = "" ]; then
                N=0
                for I in ${FIND}; do
                    logtext "Found service (at boot, runlevel 2): ${I}"
                    N=`expr ${N} + 1`
                done
                Display --indent 2 --text "- Check services at startup (rc2.d)... " --result "DONE" --color WHITE
                Display --indent 4 --text "Result: found $N services"
                logtext "Found $N services"
            fi
          else
            ReportSuggestion ${TEST_NO} "Determine runlevel and services at startup"
        fi
    fi
#
#################################################################################
#
    # Test        : BOOT-5184
    # Description : Check world writable startup scripts
    Register --test-no BOOT-5184 --os Linux --weight L --network NO --description "Check permissions for boot files/scripts"
    if [ ${SKIPTEST} -eq 0 ]; then
        FOUND=0
        CHECKDIRS="/etc/init.d /etc/rc.d /etc/rcS.d"

        logtext "Result: checking /etc/init.d scripts for writable bit"
        for I in ${CHECKDIRS}; do
            logtext "Test: checking if directory ${I} exists"
            if [ -d ${I} ]; then
                logtext "Result: directory ${I} found"
                logtext "Test: checking for available files in directory"
                FIND=`find ${I} -type f -print`
                if [ ! "${FIND}" = "" ]; then
                    logtext "Result: found files in directory, checking permissions now"
                    for J in ${FIND}; do
                        logtext "Test: checking permissions of file ${J}"
                        IsWorldWritable ${J}
                        if [ "${FileIsWorldWritable}" = "TRUE" ]; then
                            ReportWarning ${TEST_NO} "H" "Found writable startup script ${J}"
                            logtext "Result: warning, file ${J} is world writable"
                            FOUND=1
                          else
                            logtext "Result: good, file ${J} not world writable"
                        fi
                    done
                  else
                    logtext "Result: found no files in directory."
                fi
              else
                logtext "Result: directory ${I} not found. Skipping.."
            fi
        done

        # /etc/rc[0-6].d
        for NO in 0 1 2 3 4 5 6; do
            logtext "Test: Checking /etc/rc${NO}.d scripts for writable bit"
            if [ -d /etc/rc${NO}.d ]; then
                FIND=`find /etc/rc${NO}.d -type f -print`
                for I in ${FIND}; do
                    IsWorldWritable ${I}
                    if [ "${FileIsWorldWritable}" = "TRUE" ]; then
                        ReportWarning ${TEST_NO} "H" "Found writable startup script ${I}"
                        logtext "Result: warning, file ${I} is world writable"
                        FOUND=1
                      else
                        logtext "Result: good, file ${I} not world writable"
                    fi
                done
            fi
        done

        # Other files
        CHECKFILES="/etc/rc /etc/rc.local /etc/rc.d/rc.sysinit"
        for I in ${CHECKFILES}; do
            if [ -f ${I} ]; then
                logtext "Test: Checking ${I} file for writable bit"
                IsWorldWritable ${I}
                if [ "${FileIsWorldWritable}" = "TRUE" ]; then
                    ReportWarning ${TEST_NO} "H" "Found writable startup script ${I}"
                    FOUND=1
                    logtext "Result: warning, file ${I} is world writable"
                  else
                    logtext "Result: good, file ${I} not world writable"
                fi
            fi
        done

        # Check results
        if [ ${FOUND} -eq 1 ]; then
            Display --indent 2 --text "- Check startup files (permissions)... " --result "WARNING" --color RED
            ReportWarning ${TEST_NO} "H" "One or more startup files can be overwritten by all users"
            ReportSuggestion ${TEST_NO} "Check startup scripts for world write access and change permissions if needed"
            logtext "Result: found one or more scripts which are possibly writable by other users"
            AddHP 0 3
          else
            Display --indent 2 --text "- Check startup files (permissions)... " --result "OK" --color GREEN
            AddHP 3 3
        fi
    fi
#
#################################################################################
#
    # Add autostart services, like from KDE/Gnome
    # Test        : BOOT-5102
    # Description : Check for tasks which are autostarted via /etc/inittab
    #Register --test-no BOOT-5102 --weight L --network NO --description "Check inittab for services"
    #if [ ${SKIPTEST} -eq 0 ]; then
    #fi
    #YYY check against static list?
#
#################################################################################
#
    # Test        : BOOT-5202
    # Description : Check uptime of system
    Register --test-no BOOT-5202 --weight L --network NO --description "Check uptime of system"
    if [ ${SKIPTEST} -eq 0 ]; then
        FOUND=0
        FIND=""
        case "${OS}" in
            Linux)
               # Idle time, not real uptime
               if [ -f /proc/uptime ]; then
                   FIND=`cat /proc/uptime | cut -d ' ' -f1 | cut -d '.' -f1`
                 else
                   Display --indent 2 --text "- Checking uptime" --result SKIPPED --color YELLOW
                   ReportException "${TEST_NO}:1" "No uptime test available for this operating system (/proc/uptime missing)"
               fi
              ;;
            Solaris)
               if [ ! "${KSTATBINARY}" = "" ]; then
                   FIND=`${KSTATBINARY} -p unix:0:system_misc:snaptime | grep "^unix" | awk '{print $2}' | cut -d "." -f1`
                 else
                   Display --indent 2 --text "- Checking uptime" --result SKIPPED --color YELLOW
                   ReportException "${TEST_NO}:2" "No uptime test available for this operating system (kstat missing)"
               fi
              ;;
            *)
               Display --indent 2 --text "- Checking uptime" --result SKIPPED --color YELLOW

               # Want to help improving Lynis? Share your operating system and a way to determine the uptime (in seconds)
               ReportException "${TEST_NO}:3" "No uptime test available yet for this operating system"
              ;;
        esac
        if [ ! "${FIND}" = "" ]; then
            UPTIME_IN_SECS="${FIND}"
            UPTIME_IN_DAYS=`expr ${UPTIME_IN_SECS} / 60 / 60 / 24`
            logtext "Uptime (in seconds): ${UPTIME_IN_SECS}"
            logtext "Uptime (in days): ${UPTIME_IN_DAYS}"
          else
            logtext "Result: no uptime information available"
        fi
    fi



#
#################################################################################
#

report "boot_loader=${BOOT_LOADER}"

wait_for_keypress

#
#================================================================================
# Lynis - Copyright 2007-2014, Michael Boelen - www.rootkit.nl - The Netherlands