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lynis/include/tests_containers
hlein b595cc0fb5 Various cleanups (#363) 
* Typo fix.

* Style change: always use $(), never ``.

The Lynis code already mostly used $(), but backticks were sprinkled
around.  Converted all of them.

* Lots of minor spelling/typo fixes.

FWIW these were found with:

  find . -type f -print0 | xargs -0 cat | aspell list | sort -u | egrep '^[a-z]+$' | less

And then reviewing the list to pick out things that looked like
misspelled words as opposed to variables, etc., and then manual
inspection of context to determine the intention.
2017-03-06 07:41:21 +00:00

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#!/bin/sh
#################################################################################
#
# Lynis
# ------------------
#
# Copyright 2007-2013, Michael Boelen
# Copyright 2007-2017, 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 $0 }')
if [ ! -z "${FIND}" ]; then
N=0
for I in ${FIND}; do
N=$((N + 1))
ZONEID=$(echo ${I} | ${CUTBINARY} -d ':' -f1)
ZONENAME=$(echo ${I} | ${CUTBINARY} -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} | ${CUTBINARY} -d ':' -f1)
#XENGUESTID=$(echo ${I} | ${CUTBINARY} -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 [ ! -z "${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:" | ${CUTBINARY} -d " " -f 2- | ${SEDBINARY} 's/ /:space:/g')
if [ ! "${FIND}" = "" ]; then
LogText "Result: found warning(s) in output"
for I in ${FIND}; do
J=$(echo ${I} | ${SEDBINARY} '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 "${STATUS_NONE}" --color GREEN
AddHP 1 1
fi
fi
#
#################################################################################
#
# Test : CONT-8106
# Description : Checking Docker containers (basic stats)
# Notes : Hardening points are awarded, if there aren't a lot of stopped containers
if [ ! -z "${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 FILE in ${NOT_WORLD_WRITABLE}; do
LogText "Test: Check ${FILE}"
if [ -f ${FILE} ]; then
LogText "Result: file ${FILE} found, permissions will be tested"
if IsWorldWritable ${FILE}; then
LogText "Result: file is writable by others, which is a security risk (e.g. privilege escalation)"
ReportWarning "${TEST_NO}" "Docker file is world writable" "${FILE}" "-"
DOCKER_FILE_PERMISSIONS_WARNINGS=$((DOCKER_FILE_PERMISSIONS_WARNINGS + 1))
else
LogText "Result: file ${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 2007-2017, CISOfy - https://cisofy.com
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