mirror of https://github.com/CISOfy/lynis.git
228 lines
11 KiB
Bash
228 lines
11 KiB
Bash
#!/bin/sh
|
|
|
|
#################################################################################
|
|
#
|
|
# Lynis
|
|
# ------------------
|
|
#
|
|
# Copyright 2007-2013, Michael Boelen
|
|
# Copyright 2013-2016, CISOfy
|
|
#
|
|
# Website : https://cisofy.com
|
|
# Blog : http://linux-audit.com
|
|
# GitHub : https://github.com/CISOfy/lynis
|
|
#
|
|
# 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.
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Containers, Zones, Jails
|
|
#
|
|
#################################################################################
|
|
#
|
|
InsertSection "Containers"
|
|
#
|
|
#################################################################################
|
|
#
|
|
DOCKER_CONTAINERS_RUNNING=0
|
|
DOCKER_CONTAINERS_TOTAL=0
|
|
DOCKER_FILE_PERMISSIONS_WARNINGS=0
|
|
RUN_DOCKER_TESTS=0
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : CONT-8004
|
|
# Description : Query running Solaris zones
|
|
if [ -x /usr/sbin/zoneadm ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
|
|
Register --test-no CONT-8004 --os Solaris --weight L --network NO --category security --description "Query running Solaris zones"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
LogText "Test: query zoneadm to list all running zones"
|
|
FIND=`/usr/sbin/zoneadm list -p | ${AWKBINARY} -F: '{ if ($2!="global") print $0 }'`
|
|
if [ ! "${FIND}" = "" ]; then
|
|
N=0
|
|
for I in ${FIND}; do
|
|
N=$((N + 1))
|
|
ZONEID=`echo ${I} | cut -d ':' -f1`
|
|
ZONENAME=`echo ${I} | cut -d ':' -f2`
|
|
LogText "Result: found zone ${ZONENAME} (running)"
|
|
Report "solaris_running_zone[]=${ZONENAME} [id:${ZONEID}]"
|
|
done
|
|
LogText "Result: total of ${N} running zones"
|
|
Display --indent 2 --text "- Checking Solaris Zones" --result "FOUND ${N} zones" --color GREEN
|
|
else
|
|
LogText "Result: no running zones found"
|
|
Display --indent 2 --text "- Checking Solaris Zones" --result "${STATUS_NONE}" --color WHITE
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : CONT-1906
|
|
# Description : Query running Xen zones
|
|
#if [ -x /usr/bin/xm ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
|
|
#Register --test-no CONT-1906 --weight L --network NO --category security --description "Query Xen guests"
|
|
#if [ ${SKIPTEST} -eq 0 ]; then
|
|
# Show Xen guests
|
|
#FIND=`xm list | ${AWKBINARY} '$1 != "Name|Domain-0" {print $1","$2}'`
|
|
#for I in ${FIND}; do
|
|
#XENGUESTNAME=`echo ${I} | cut -d ':' -f1`
|
|
#XENGUESTID=`echo ${I} | cut -d ':' -f2`
|
|
#LogText "Result: found Xen guest ${XENGUESTNAME} (ID: ${XENGUESTID})"
|
|
#done
|
|
#fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : CONT-8102
|
|
# Description : Checking Docker daemon status and basic information for later tests
|
|
Register --test-no CONT-8102 --weight L --network NO --category security --description "Checking Docker status and information"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
IsRunning "docker -d"
|
|
if [ ${RUNNING} -eq 1 ]; then
|
|
LogText "Result: found Docker daemon running"
|
|
Report "docker_daemon_running=1"
|
|
DOCKER_DAEMON_RUNNING=1
|
|
RUN_DOCKER_TESTS=1
|
|
Display --indent 4 --text "- Docker"
|
|
Display --indent 6 --text "- Docker daemon" --result "${STATUS_RUNNING}" --color GREEN
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : CONT-8104
|
|
# Description : Checking Docker info for any warnings
|
|
# Notes : Hardening points are awarded, as usually warnings are the result of missing controls to restrict boundaries like memory
|
|
if [ ! "${DOCKERBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
|
|
Register --test-no CONT-8104 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Checking Docker info for any warnings"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
COUNT=0
|
|
LogText "Test: Check for any warnings"
|
|
FIND=$(${DOCKERBINARY} version 2>&1)
|
|
if [ $? -gt 0 ]; then
|
|
Display --indent 8 --text "- Docker status" --result "${STATUS_ERROR}" --color RED
|
|
LogText "Result: disabling further Docker tests as docker version gave exit code other than zero (0)"
|
|
RUN_DOCKER_TESTS=0
|
|
fi
|
|
FIND=`${DOCKERBINARY} info 2>&1 | ${GREPBINARY} "^WARNING:" | cut -d " " -f 2- | sed 's/ /:space:/g'`
|
|
if [ ! "${FIND}" = "" ]; then
|
|
LogText "Result: found warning(s) in output"
|
|
for I in ${FIND}; do
|
|
J=`echo ${I} | sed 's/:space:/ /g'`
|
|
LogText "Output: ${J}"
|
|
COUNT=$((COUNT + 1))
|
|
done
|
|
Display --indent 8 --text "- Docker info output (warnings)" --result "${COUNT}" --color YELLOW
|
|
ReportSuggestion "${TEST_NO}" "Run 'docker info' to see warnings applicable to Docker daemon"
|
|
AddHP 3 4
|
|
else
|
|
LogText "Result: no warnings found from 'docker info' output"
|
|
Display --indent 8 --text "- Docker info output (warnings)" --result "${STATUS_NONE}" --color GREEN
|
|
AddHP 1 1
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : CONT-8106
|
|
# Description : Checking Docker containers (basic stats)
|
|
# Notes : Hardening points are awarded, if there aren't a lot of stopped containers
|
|
if [ ! "${DOCKERBINARY}" = "" -a ${RUN_DOCKER_TESTS} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
|
|
Register --test-no CONT-8106 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Gather basic stats from Docker"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
Display --indent 6 --text "- Containers"
|
|
|
|
# Check total of containers
|
|
LogText "Test: checking total amount of Docker containers"
|
|
DOCKER_CONTAINERS_TOTAL=$(${DOCKERBINARY} info 2> /dev/null | ${GREPBINARY} "^Containers: " | ${AWKBINARY} '{ print $2 }')
|
|
if [ "${DOCKER_CONTAINERS_TOTAL}" = "" ]; then
|
|
DOCKER_CONTAINERS_TOTAL=0
|
|
fi
|
|
LogText "Result: docker info shows ${DOCKER_CONTAINERS_TOTAL} containers"
|
|
DOCKER_CONTAINERS_TOTAL2=$(${DOCKERBINARY} ps -a 2> /dev/null | ${GREPBINARY} -c -v "CONTAINER")
|
|
LogText "Result: docker ps -a shows ${DOCKER_CONTAINERS_TOTAL2} containers"
|
|
if [ ! "${DOCKER_CONTAINERS_TOTAL}" = "${DOCKER_CONTAINERS_TOTAL2}" ]; then
|
|
LogText "Result: difference detected, which is unexpected"
|
|
ReportSuggestion "${TEST_NO}" "Test output of both 'docker ps -a' and 'docker info', to determine why they report a different amount of containers"
|
|
Display --indent 8 --text "- Total containers" --result "${STATUS_UNKNOWN}" --color RED
|
|
else
|
|
Display --indent 8 --text "- Total containers" --result "${DOCKER_CONTAINERS_TOTAL}" --color WHITE
|
|
fi
|
|
|
|
# Check running instances
|
|
DOCKER_CONTAINERS_RUNNING=$(${DOCKERBINARY} ps 2> /dev/null | ${GREPBINARY} -c -v "CONTAINER")
|
|
if [ ${DOCKER_CONTAINERS_RUNNING} -gt 0 ]; then
|
|
Display --indent 10 --text "- Running containers" --result "${DOCKER_CONTAINERS_RUNNING}" --color GREEN
|
|
LogText "Result: ${DOCKER_CONTAINERS_RUNNING} containers are currently active"
|
|
Report "docker_containers_running=${DOCKER_CONTAINERS_RUNNING}"
|
|
else
|
|
LogText "Result: no active containers"
|
|
Report "docker_containers_running=0"
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : CONT-8107
|
|
# Description : Checking Docker number of unused containers
|
|
# Notes : Hardening points are awarded, if there aren't a lot of stopped containers
|
|
if [ ! "${DOCKERBINARY}" = "" -a ${RUN_DOCKER_TESTS} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
|
|
Register --test-no CONT-8107 --preqs-met ${PREQS_MET} --weight L --network NO --category performance --description "Check number of Docker containers"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
# Check if there aren't too many unused containers on the system
|
|
if [ ${DOCKER_CONTAINERS_TOTAL} -gt 0 ]; then
|
|
DOCKER_CONTAINERS_UNUSED=$((DOCKER_CONTAINERS_TOTAL - DOCKER_CONTAINERS_RUNNING))
|
|
if [ ${DOCKER_CONTAINERS_UNUSED} -gt 10 ]; then
|
|
ReportSuggestion "${TEST_NO}" "More than 10 unused containers found on the system. Clean up old containers by using output of 'docker ps -a' command"
|
|
Display --indent 8 --text "- Unused containers" --result "${DOCKER_CONTAINERS_UNUSED}" --color RED
|
|
AddHP 0 2
|
|
else
|
|
LogText "Result: found ${DOCKER_CONTAINERS_UNUSED} unused containers"
|
|
Display --indent 8 --text "- Unused containers" --result "${DOCKER_CONTAINERS_UNUSED}" --color YELLOW
|
|
AddHP 1 1
|
|
fi
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : CONT-8108
|
|
# Description : Checking Docker file permissions
|
|
# Notes : /var/run/docker.sock - Usually root as owner, docker as group - should not be world writable
|
|
if [ ! "${DOCKERBINARY}" = "" -a ${RUN_DOCKER_TESTS} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
|
|
Register --test-no CONT-8108 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check file permissions for Docker files"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
NOT_WORLD_WRITABLE="/var/run/docker.sock"
|
|
for I in ${NOT_WORLD_WRITABLE}; do
|
|
LogText "Test: Check ${I}"
|
|
if [ -f ${I} ]; then
|
|
LogText "Result: file ${I} found, permissions will be tested"
|
|
if IsWorldWritable ${I}; then
|
|
LogText "Result: file is writable by others, which is a security risk (e.g. privilege escalation)"
|
|
ReportWarning "${TEST_NO}" "Docker file is world writable" "${I}" "-"
|
|
DOCKER_FILE_PERMISSIONS_WARNINGS=$((DOCKER_FILE_PERMISSIONS_WARNINGS + 1))
|
|
else
|
|
LogText "Result: file is not writable by others, which is fine"
|
|
fi
|
|
fi
|
|
done
|
|
if [ ${DOCKER_FILE_PERMISSIONS_WARNINGS} -gt 0 ]; then
|
|
Display --indent 4 --text "- File permissions" --result "${STATUS_WARNING}"S --color YELLOW
|
|
AddHP 0 5
|
|
else
|
|
Display --indent 4 --text "- File permissions" --result "${STATUS_OK}" --color GREEN
|
|
AddHP 5 5
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
|
|
WaitForKeyPress
|
|
|
|
#
|
|
#================================================================================
|
|
# Lynis - Copyright 2007-2016, CISOfy - https://cisofy.com
|