mirror of https://github.com/CISOfy/lynis.git
344 lines
17 KiB
Bash
344 lines
17 KiB
Bash
#!/bin/sh
|
|
|
|
#################################################################################
|
|
#
|
|
# Lynis
|
|
# ------------------
|
|
#
|
|
# Copyright 2007-2013, Michael Boelen
|
|
# Copyright 2007-2019, 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.
|
|
#
|
|
#################################################################################
|
|
#
|
|
AIDECONFIG=""
|
|
CSF_CONFIG="${ROOTDIR}etc/csf/csf.conf"
|
|
FILE_INT_TOOL=""
|
|
FILE_INT_TOOL_FOUND=0 # Boolean, file integrity tool found
|
|
#
|
|
#################################################################################
|
|
#
|
|
InsertSection "Software: file integrity"
|
|
Display --indent 2 --text "- Checking file integrity tools"
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4310
|
|
# Description : Check if AFICK is installed
|
|
Register --test-no FINT-4310 --weight L --network NO --category security --description "AFICK availability"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
LogText "Test: Checking AFICK binary"
|
|
if [ -n "${AFICKBINARY}" ]; then
|
|
LogText "Result: AFICK is installed (${AFICKBINARY})"
|
|
Report "file_integrity_tool[]=afick"
|
|
FILE_INT_TOOL="afick"
|
|
FILE_INT_TOOL_FOUND=1
|
|
Display --indent 4 --text "- AFICK" --result "${STATUS_FOUND}" --color GREEN
|
|
else
|
|
LogText "Result: AFICK is not installed"
|
|
if IsVerbose; then Display --indent 4 --text "- AFICK" --result "${STATUS_NOT_FOUND}" --color WHITE; fi
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4314
|
|
# Description : Check if AIDE is installed
|
|
Register --test-no FINT-4314 --weight L --network NO --category security --description "AIDE availability"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
LogText "Test: Checking AIDE binary"
|
|
if [ -n "${AIDEBINARY}" ]; then
|
|
LogText "Result: AIDE is installed (${AIDEBINARY})"
|
|
Report "file_integrity_tool[]=aide"
|
|
FILE_INT_TOOL="aide"
|
|
FILE_INT_TOOL_FOUND=1
|
|
Display --indent 4 --text "- AIDE" --result "${STATUS_FOUND}" --color GREEN
|
|
else
|
|
LogText "Result: AIDE is not installed"
|
|
if IsVerbose; then Display --indent 4 --text "- AIDE" --result "${STATUS_NOT_FOUND}" --color WHITE; fi
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4315
|
|
# Description : Check AIDE configuration file
|
|
if [ -n "${AIDEBINARY}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
|
|
Register --test-no FINT-4315 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check AIDE configuration file"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
AIDE_CONFIG_LOCS="${ROOTDIR}etc ${ROOTDIR}etc/aide ${ROOTDIR}usr/local/etc"
|
|
LogText "Test: search for aide.conf in ${AIDE_CONFIG_LOCS}"
|
|
for I in ${AIDE_CONFIG_LOCS}; do
|
|
if [ -f "${I}/aide.conf" ]; then
|
|
LogText "Result: found aide.conf in directory ${I}"
|
|
AIDECONFIG="${I}/aide.conf"
|
|
fi
|
|
done
|
|
|
|
if [ -z "${AIDECONFIG}" ]; then
|
|
Display --indent 6 --text "- AIDE config file" --result "${STATUS_NOT_FOUND}" --color RED
|
|
ReportWarning "${TEST_NO}" "No AIDE configuration file was found, needed for AIDE functionality"
|
|
else
|
|
LogText "Checking configuration file ${AIDECONFIG} for errors"
|
|
FIND=$(${AIDEBINARY} --config=${AIDECONFIG} -D)
|
|
if [ $? -eq 0 ]; then
|
|
Display --indent 6 --text "- AIDE config file" --result "${STATUS_FOUND}" --color GREEN
|
|
else
|
|
Display --indent 6 --text "- AIDE config file" --result "${STATUS_WARNING}" --color YELLOW
|
|
ReportSuggestion "${TEST_NO}" "Check the AIDE configuration file as it may contain errors"
|
|
fi
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4316
|
|
# Description : Presence of AIDE database and size check
|
|
if [ -n "${AIDEBINARY}" -a -n "${AIDECONFIG}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
|
|
Register --test-no FINT-4316 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Presence of AIDE database and size check"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
AIDE_DB=$(${GREPBINARY} ^database= ${AIDECONFIG} | ${SEDBINARY} "s/.*://")
|
|
if case ${AIDE_DB} in @@*) ;; *) false;; esac; then
|
|
I=$(${GREPBINARY} "@@define.*DBDIR" ${AIDECONFIG} | ${AWKBINARY} '{print $3}')
|
|
AIDE_DB=$(echo ${AIDE_DB} | ${SEDBINARY} "s#.*}#${I}#")
|
|
fi
|
|
LogText "Test: search for AIDE database on disk ${AIDE_DB}"
|
|
|
|
if [ ! -e "${AIDE_DB}" ]; then
|
|
Display --indent 6 --text "- AIDE database" --result "${STATUS_NOT_FOUND}" --color RED
|
|
LogText "Result: AIDE database ${AIDE_DB} does not exist"
|
|
ReportWarning "${TEST_NO}" "No AIDE database was found, needed for AIDE functionality"
|
|
else
|
|
LogText "Checking database size ${AIDE_DB}"
|
|
if [ -s "${AIDE_DB}" ]; then
|
|
Display --indent 6 --text "- AIDE database" --result "${STATUS_FOUND}" --color GREEN
|
|
LogText "Result: AIDE database ${AIDE_DB} exist and has a size greater than zero"
|
|
else
|
|
Display --indent 6 --text "- AIDE database" --result "${STATUS_WARNING}" --color YELLOW
|
|
LogText "Result: AIDE database ${AIDE_DB} exist but has a size of zero"
|
|
ReportSuggestion "${TEST_NO}" "Check the AIDE database as it may contain errors"
|
|
fi
|
|
fi
|
|
unset AIDE_DB I
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4318
|
|
# Description : Check if Osiris is installed
|
|
Register --test-no FINT-4318 --weight L --network NO --category security --description "Osiris availability"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
LogText "Test: Checking Osiris binary"
|
|
if [ -n "${OSIRISBINARY}" ]; then
|
|
LogText "Result: Osiris is installed (${OSIRISBINARY})"
|
|
Report "file_integrity_tool[]=osiris"
|
|
FILE_INT_TOOL="osiris"
|
|
FILE_INT_TOOL_FOUND=1
|
|
Display --indent 4 --text "- Osiris" --result "${STATUS_FOUND}" --color GREEN
|
|
else
|
|
LogText "Result: Osiris is not installed"
|
|
if IsVerbose; then Display --indent 4 --text "- Osiris" --result "${STATUS_NOT_FOUND}" --color WHITE; fi
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4322
|
|
# Description : Check if Samhain is installed
|
|
Register --test-no FINT-4322 --weight L --network NO --category security --description "Samhain availability"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
LogText "Test: Checking Samhain binary"
|
|
if [ -n "${SAMHAINBINARY}" ]; then
|
|
LogText "Result: Samhain is installed (${SAMHAINBINARY})"
|
|
Report "file_integrity_tool[]=samhain"
|
|
FILE_INT_TOOL="samhain"
|
|
FILE_INT_TOOL_FOUND=1
|
|
Display --indent 4 --text "- Samhain" --result "${STATUS_FOUND}" --color GREEN
|
|
else
|
|
LogText "Result: Samhain is not installed"
|
|
if IsVerbose; then Display --indent 4 --text "- Samhain" --result "${STATUS_NOT_FOUND}" --color WHITE; fi
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4326
|
|
# Description : Check if Tripwire is installed
|
|
Register --test-no FINT-4326 --weight L --network NO --category security --description "Tripwire availability"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
LogText "Test: Checking Tripwire binary"
|
|
if [ -n "${TRIPWIREBINARY}" ]; then
|
|
LogText "Result: Tripwire is installed (${TRIPWIREBINARY})"
|
|
Report "file_integrity_tool[]=tripwire"
|
|
FILE_INT_TOOL="tripwire"
|
|
FILE_INT_TOOL_FOUND=1
|
|
Display --indent 4 --text "- Tripwire" --result "${STATUS_FOUND}" --color GREEN
|
|
else
|
|
LogText "Result: Tripwire is not installed"
|
|
if IsVerbose; then Display --indent 4 --text "- Tripwire" --result "${STATUS_NOT_FOUND}" --color WHITE; fi
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4328
|
|
# Description : Check if OSSEC system integrity tool is running
|
|
Register --test-no FINT-4328 --weight L --network NO --category security --description "OSSEC syscheck daemon running"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
LogText "Test: Checking if OSSEC syscheck daemon is running"
|
|
if IsRunning "ossec-syscheckd"; then
|
|
LogText "Result: syscheck (OSSEC) active"
|
|
Report "file_integrity_tool[]=ossec"
|
|
FILE_INT_TOOL="ossec-syscheck"
|
|
FILE_INT_TOOL_FOUND=1
|
|
Display --indent 4 --text "- OSSEC (syscheck)" --result "${STATUS_FOUND}" --color GREEN
|
|
else
|
|
LogText "Result: syscheck (OSSEC) is not active"
|
|
if IsVerbose; then Display --indent 4 --text "- OSSEC" --result "${STATUS_NOT_FOUND}" --color WHITE; fi
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4330
|
|
# Description : Check if mtree is installed
|
|
# Note : Usually on BSD and similar
|
|
Register --test-no FINT-4330 --weight L --network NO --category security --description "mtree availability"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
LogText "Test: Checking mtree binary"
|
|
if [ -n "${MTREEBINARY}" ]; then
|
|
LogText "Result: mtree is installed (${MTREEBINARY})"
|
|
Report "file_integrity_tool[]=mtree"
|
|
FILE_INT_TOOL="mtree"
|
|
FILE_INT_TOOL_FOUND=1
|
|
Display --indent 4 --text "- mtree" --result "${STATUS_FOUND}" --color GREEN
|
|
else
|
|
LogText "Result: mtree is not installed"
|
|
if IsVerbose; then Display --indent 4 --text "- mtree" --result "${STATUS_NOT_FOUND}" --color WHITE; fi
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4334
|
|
# Description : Check if LFD is used (part of CSF suite)
|
|
if [ -f ${CSF_CONFIG} ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
|
|
Register --test-no FINT-4334 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check lfd daemon status"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
Display --indent 4 --text "- lfd (CSF)" --result "${STATUS_FOUND}" --color GREEN
|
|
LogText "Test: determine lfd status"
|
|
if IsRunning "lfd - sleeping"; then
|
|
LogText "Result: lfd daemon is running (CSF)"
|
|
Report "file_integrity_tool[]=csf-lfd"
|
|
Display --indent 6 --text "- LFD (CSF) daemon" --result "${STATUS_RUNNING}" --color GREEN
|
|
FILE_INT_TOOL="csf-lfd"
|
|
FILE_INT_TOOL_FOUND=1
|
|
else
|
|
Display --indent 6 --text "- LFD (CSF) daemon" --result "${STATUS_NOT_RUNNING}" --color YELLOW
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4336
|
|
# Description : Check if LFD is enabled (part of CSF suite)
|
|
if [ -f ${CSF_CONFIG} ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
|
|
Register --test-no FINT-4336 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check lfd configuration status"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
# LFD configuration parameters
|
|
ENABLED=$(${GREPBINARY} "^LF_DAEMON = \"1\"" ${CSF_CONFIG})
|
|
if [ -n "${ENABLED}" ]; then
|
|
LogText "Result: lfd service is configured to run"
|
|
Display --indent 6 --text "- Configuration status" --result "${STATUS_ENABLED}" --color GREEN
|
|
else
|
|
LogText "Result: lfd service is configured NOT to run"
|
|
Display --indent 6 --text "- Configuration status" --result "${STATUS_DISABLED}" --color YELLOW
|
|
fi
|
|
ENABLED=$(${GREPBINARY} "^LF_DIRWATCH =" ${CSF_CONFIG} | ${AWKBINARY} '{ print $3 }' | ${SEDBINARY} 's/\"//g')
|
|
if [ ! "${ENABLED}" = "0" -a -n "${ENABLED}" ]; then
|
|
LogText "Result: lfd directory watching is enabled (value: ${ENABLED})"
|
|
Display --indent 6 --text "- Temporary directory watches" --result "${STATUS_ENABLED}" --color GREEN
|
|
else
|
|
LogText "Result: lfd directory watching is disabled"
|
|
Display --indent 6 --text "- Temporary directory watches" --result "${STATUS_DISABLED}" --color YELLOW
|
|
fi
|
|
ENABLED=$(${GREPBINARY} "^LF_DIRWATCH_FILE =" ${CSF_CONFIG} | ${AWKBINARY} '{ print $3 }' | ${SEDBINARY} 's/\"//g')
|
|
if [ ! "${ENABLED}" = "0" -a -n "${ENABLED}" ]; then
|
|
Display --indent 6 --text "- Directory/File watches" --result "${STATUS_ENABLED}" --color GREEN
|
|
else
|
|
Display --indent 6 --text "- Directory/File watches" --result "${STATUS_DISABLED}" --color YELLOW
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4338
|
|
# Description : Check if osquery system integrity tool is running
|
|
Register --test-no FINT-4338 --weight L --network NO --category security --description "osqueryd syscheck daemon running"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
LogText "Test: Checking if osqueryd syscheck daemon is running"
|
|
if IsRunning "osqueryd"; then
|
|
LogText "Result: syscheck (osquery) installed"
|
|
Report "file_integrity_tool[]=osquery"
|
|
FILE_INT_TOOL="osquery"
|
|
FILE_INT_TOOL_FOUND=1
|
|
Display --indent 4 --text "- osquery daemon (syscheck)" --result "${STATUS_FOUND}" --color GREEN
|
|
else
|
|
LogText "Result: syscheck (osquery) not installed"
|
|
if IsVerbose; then Display --indent 4 --text "- osquery daemon (syscheck)" --result "${STATUS_NOT_FOUND}" --color WHITE; fi
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4402 (was FINT-4316)
|
|
# Description : Check if AIDE is configured to use SHA256 or SHA512 checksums
|
|
if [ ! "${AIDEBINARY}" = "" -a -n "${AIDECONFIG}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
|
|
Register --test-no FINT-4402 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "AIDE configuration: Checksums (SHA256 or SHA512)"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
FIND=$(${GREPBINARY} -v "^#" ${AIDECONFIG} | ${EGREPBINARY} "= .*(sha256|sha512)")
|
|
if [ -z "${FIND}" ]; then
|
|
LogText "Result: No SHA256 or SHA512 found for creating checksums"
|
|
Display --indent 6 --text "- AIDE config (Checksum)" --result Suggestion --color YELLOW
|
|
ReportSuggestion "${TEST_NO}" "Use SHA256 or SHA512 to create checksums in AIDE"
|
|
AddHP 1 3
|
|
else
|
|
LogText "Result: Found SHA256 or SHA512 found for creating checksums"
|
|
Display --indent 6 --text "- AIDE config (Checksum)" --result "${STATUS_OK}" --color GREEN
|
|
AddHP 2 2
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
# Test : FINT-4350
|
|
# Description : Check if at least one file integrity tool is installed
|
|
Register --test-no FINT-4350 --weight L --network NO --category security --description "File integrity software installed"
|
|
if [ ${SKIPTEST} -eq 0 ]; then
|
|
LogText "Test: Check if at least on file integrity tool is available/installed"
|
|
if [ ${FILE_INT_TOOL_FOUND} -eq 1 ]; then
|
|
LogText "Result: found at least one file integrity tool"
|
|
Display --indent 2 --text "- Checking presence integrity tool" --result "${STATUS_FOUND}" --color GREEN
|
|
AddHP 5 5
|
|
else
|
|
LogText "Result: No file integrity tools found"
|
|
Display --indent 2 --text "- Checking presence integrity tool" --result "${STATUS_NOT_FOUND}" --color YELLOW
|
|
ReportSuggestion "${TEST_NO}" "Install a file integrity tool to monitor changes to critical and sensitive files"
|
|
AddHP 0 5
|
|
fi
|
|
fi
|
|
#
|
|
#################################################################################
|
|
#
|
|
WaitForKeyPress
|
|
#
|
|
#================================================================================
|
|
# Lynis - Copyright 2007-2019 Michael Boelen, CISOfy - https://cisofy.com
|