From 8ea39314f2a028bca4ff53842258459c8ca018d3 Mon Sep 17 00:00:00 2001 From: Topi Miettinen Date: Mon, 23 Mar 2020 10:35:38 +0200 Subject: 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 --- db/tests.db | 2 ++ include/binaries | 2 ++ include/tests_file_integrity | 79 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 83 insertions(+) diff --git a/db/tests.db b/db/tests.db index 44a9a410..3fc66b9a 100644 --- a/db/tests.db +++ b/db/tests.db @@ -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: diff --git a/include/binaries b/include/binaries index b538eb56..bae053d2 100644 --- a/include/binaries +++ b/include/binaries @@ -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) - ${BINARY}" ;; diff --git a/include/tests_file_integrity b/include/tests_file_integrity index a387c248..dc32411d 100644 --- a/include/tests_file_integrity +++ b/include/tests_file_integrity @@ -319,6 +319,85 @@ fi # ################################################################################# +# + # Test : FINT-4340 + # Description : Check dm-integrity status + if [ ! -z "${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 -- cgit v1.2.3