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Check for dm-integrity and dm-verity 

Detect tools for dm-integrity and dm-verity, check if some devices
in /dev/mapper/* use them and especially the system root device.

Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
This commit is contained in:
Topi Miettinen 2020-03-23 10:35:38 +02:00
parent 203a4d3480
commit 8ea39314f2
No known key found for this signature in database
GPG Key ID: 87E1A51C590B0577
3 changed files with 83 additions and 0 deletions
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2
db/tests.db
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@ -136,6 +136,8 @@ FINT-4334:test:security:file_integrity::Check lfd daemon status:
FINT-4336:test:security:file_integrity::Check lfd configuration status:
FINT-4338:test:security:file_integrity::osqueryd syscheck daemon running:
FINT-4339:test:security:file_integrity:Linux:Check IMA/EVM Status
FINT-4340:test:security:file_integrity:Linux:Check dm-integrity status
FINT-4341:test:security:file_integrity:Linux:Check dm-verity status
FINT-4350:test:security:file_integrity::File integrity software installed:
FINT-4402:test:security:file_integrity::Checksums (SHA256 or SHA512):
FIRE-4502:test:security:firewalls:Linux:Check iptables kernel module:

2
include/binaries
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@ -176,6 +176,7 @@
httpd2-prefork) HTTPDBINARY=${BINARY}; LogText " Found known binary: apache2 (web server) - ${BINARY}" ;;
initctl) INITCTLBINARY=${BINARY}; SERVICE_MANAGER="upstart"; LogText " Found known binary: initctl (client to upstart init) - ${BINARY}" ;;
ifconfig) IFCONFIGBINARY="${BINARY}"; LogText " Found known binary: ipconfig (IP configuration) - ${BINARY}" ;;
integritysetup) INTEGRITYSETUPBINARY="${BINARY}"; LogText " Found known binary: integritysetup (dm-integrity setup tool) - ${BINARY}" ;;
ip) IPBINARY="${BINARY}"; LogText " Found known binary: ip (IP configuration) - ${BINARY}" ;;
ipf) IPFBINARY="${BINARY}"; LogText " Found known binary: ipf (firewall) - ${BINARY}" ;;
iptables) IPTABLESBINARY="${BINARY}"; LogText " Found known binary: iptables (firewall) - ${BINARY}" ;;
@ -282,6 +283,7 @@
uname) UNAMEBINARY="${BINARY}"; LogText " Found known binary: uname (operating system details) - ${BINARY}" ;;
uniq) UNIQBINARY="${BINARY}"; LogText " Found known binary: uniq (text manipulation utility) - ${BINARY}";;
usbguard) USBGUARDBINARY="${BINARY}"; LogText " Found known binary: usbguard (USB security tool) - ${BINARY}" ;;
veritysetup) VERITYSETUPBINARY="${BINARY}"; LogText " Found known binary: veritysetup (dm-verity setup tool) - ${BINARY}" ;;
vgdisplay) VGDISPLAYBINARY="${BINARY}"; LogText " Found known binary: vgdisplay (LVM tool) - ${BINARY}" ;;
vmtoolsd) VMWARETOOLSDBINARY="${BINARY}"; LogText " Found known binary: vmtoolsd (VMWare tools) - ${BINARY}" ;;
wc) WCBINARY="${BINARY}"; LogText " Found known binary: wc (word count) - ${BINARY}" ;;

79
include/tests_file_integrity
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@ -319,6 +319,85 @@
fi
#
#################################################################################
#
# Test : FINT-4340
# Description : Check dm-integrity status
if [ ! -z "${INTEGRITYSETUPBINARY}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; SKIPREASON="No integritysetup binary found"; fi
Register --test-no FINT-4340 --os Linux --preqs-met ${PREQS_MET} --skip-reason "${SKIPREASON}" --weight L --network NO --category security --description "Check dm-integrity status"
if [ ${SKIPTEST} -eq 0 ]; then
FOUND=0
ROOTPROTECTED=0
ROOTDEVICE=$(${MOUNTBINARY} | ${AWKBINARY} '/ on \/ type / { print $1 }')
for DEVICE in /dev/mapper/*; do
if [ -e "${DEVICE}" ]; then
FIND=$(${INTEGRITYSETUPBINARY} status "${DEVICE}" | ${EGREPBINARY} 'type:.*INTEGRITY')
if [ ! -z "${FIND}" ]; then
FOUND=1
LogText "Result: found dm-integrity device ${DEVICE}"
if [ "${DEVICE}" = "${ROOTDEVICE}" ]; then
ROOTPROTECTED=1
fi
fi
fi
done
if [ "${FOUND}" -ne 1 ]; then
LogText "Result: dm-integrity tools found but no active devices"
Display --indent 2 --text "- dm-integrity (status)" --result "${STATUS_DISABLED}" --color WHITE
else
LogText "Result: dm-integrity tools found, active devices"
if [ ${ROOTPROTECTED} -eq 1 ]; then
LogText "Result: root filesystem is protected by dm-integrity"
Display --indent 2 --text "- dm-integrity (status)" --result "${STATUS_ENABLED}" --color GREEN
else
LogText "Result: root filesystem is not protected by dm-integrity but active devices found"
Display --indent 2 --text "- dm-integrity (status)" --result "${STATUS_FOUND}" --color YELLOW
fi
FILE_INT_TOOL="dm-integrity"
FILE_INT_TOOL_FOUND=1
Display --indent 2 --text "- dm-integrity (status)" --result "${STATUS_ENABLED}" --color GREEN
fi
fi
#
#################################################################################
#
# Test : FINT-4341
# Description : Check dm-verity status
if [ ! -z "${VERITYSETUPBINARY}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; SKIPREASON="No veritysetup binary found"; fi
Register --test-no FINT-4341 --os Linux --preqs-met ${PREQS_MET} --skip-reason "${SKIPREASON}" --weight L --network NO --category security --description "Check dm-verity status"
if [ ${SKIPTEST} -eq 0 ]; then
FOUND=0
ROOTPROTECTED=0
ROOTDEVICE=$(${MOUNTBINARY} | ${AWKBINARY} '/ on \/ type / { print $1 }')
for DEVICE in /dev/mapper/*; do
if [ -e "${DEVICE}" ]; then
FIND=$(${VERITYSETUPBINARY} status "${DEVICE}" | ${EGREPBINARY} 'type:.*VERITY')
if [ ! -z "${FIND}" ]; then
FOUND=1
LogText "Result: found dm-verity device ${DEVICE}"
if [ "${DEVICE}" = "${ROOTDEVICE}" ]; then
ROOTPROTECTED=1
fi
fi
fi
done
if [ "${FOUND}" -ne 1 ]; then
LogText "Result: dm-verity tools found but no active devices"
Display --indent 2 --text "- dm-verity (status)" --result "${STATUS_DISABLED}" --color WHITE
else
LogText "Result: dm-verity tools found, active devices"
if [ ${ROOTPROTECTED} -eq 1 ]; then
LogText "Result: root filesystem is protected by dm-verity"
Display --indent 2 --text "- dm-verity (status)" --result "${STATUS_ENABLED}" --color GREEN
else
LogText "Result: root filesystem is not protected by dm-verity but active devices found"
Display --indent 2 --text "- dm-verity (status)" --result "${STATUS_FOUND}" --color YELLOW
fi
FILE_INT_TOOL="dm-verity"
FILE_INT_TOOL_FOUND=1
fi
fi
#
#################################################################################
#
# Test : FINT-4402 (was FINT-4316)
# Description : Check if AIDE is configured to use SHA256 or SHA512 checksums