mirror of https://github.com/CISOfy/lynis.git
184 lines
8.4 KiB
Bash
184 lines
8.4 KiB
Bash
#!/bin/sh
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#################################################################################
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#
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# Lynis
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# ------------------
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#
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# Copyright 2007-2013, Michael Boelen
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# Copyright 2007-2018, CISOfy
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#
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# Website : https://cisofy.com
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# Blog : http://linux-audit.com
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# GitHub : https://github.com/CISOfy/lynis
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#
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# Lynis comes with ABSOLUTELY NO WARRANTY. This is free software, and you are
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# welcome to redistribute it under the terms of the GNU General Public License.
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# See LICENSE file for usage of this software.
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#
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#################################################################################
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#
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# NFS
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#
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#################################################################################
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#
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InsertSection "NFS"
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#
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#################################################################################
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#
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NFS_DAEMON_RUNNING=0
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NFS_EXPORTS_EMPTY=0
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#
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#################################################################################
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#
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# Test : STRG-1902
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# Description : Check rpcinfo
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if [ ! -z "${RPCINFOBINARY}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
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Register --test-no STRG-1902 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check rpcinfo registered programs"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Checking rpcinfo registered programs"
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FIND=$(${RPCINFOBINARY} -p 2> /dev/null | ${TRBINARY} -s ' ' ',')
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for I in ${FIND}; do
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LogText "rpcinfo: ${I}"
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done
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Display --indent 2 --text "- Query rpc registered programs" --result "${STATUS_DONE}" --color GREEN
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fi
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#
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#################################################################################
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#
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# Test : STRG-1904
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# Description : Check nfs versions in rpcinfo
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if [ ! -z "${RPCINFOBINARY}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
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Register --test-no STRG-1904 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check nfs rpc"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Checking NFS registered versions"
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FIND=$(${RPCINFOBINARY} -p 2> /dev/null | ${AWKBINARY} '{ if ($5=="nfs") { print $2 } }' | uniq | sort)
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for I in ${FIND}; do
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LogText "Found version: ${I}"
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done
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Display --indent 2 --text "- Query NFS versions" --result "${STATUS_DONE}" --color GREEN
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fi
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#
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#################################################################################
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#
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# Test : STRG-1906
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# Description : Check nfs protocols (TCP/UDP) and port in rpcinfo
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if [ ! -z "${RPCINFOBINARY}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
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Register --test-no STRG-1906 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check nfs rpc"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Checking NFS registered protocols"
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FIND=$(${RPCINFOBINARY} -p 2> /dev/null | ${AWKBINARY} '{ if ($5=="nfs") { print $3 } }' | uniq | sort)
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for I in ${FIND}; do
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LogText "Found protocol: ${I}"
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done
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if [ -z "${FIND}" ]; then
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LogText "Output: no NFS protocols found"
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fi
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# Check port number
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LogText "Test: Checking NFS registered ports"
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FIND=$(${RPCINFOBINARY} -p 2> /dev/null | ${AWKBINARY} '{ if ($5=="nfs") { print $3 } }' | uniq | sort)
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for I in ${FIND}; do
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LogText "Found port: ${I}"
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done
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if [ -z "${FIND}" ]; then
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LogText "Output: no NFS port number found"
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fi
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Display --indent 2 --text "- Query NFS protocols" --result "${STATUS_DONE}" --color GREEN
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fi
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#
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#################################################################################
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#
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# Test : STRG-1920
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# Description : Check for running NFS daemons
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Register --test-no STRG-1920 --weight L --network NO --category security --description "Checking NFS daemon"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Checking running NFS daemon"
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FIND=$(${PSBINARY} ax | ${GREPBINARY} "nfsd" | ${GREPBINARY} -v "grep")
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if [ -z "${FIND}" ]; then
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LogText "Output: NFS daemon is not running"
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Display --indent 2 --text "- Check running NFS daemon" --result "${STATUS_NOT_FOUND}" --color WHITE
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else
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LogText "Output: NFS daemon is running"
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Display --indent 2 --text "- Check running NFS daemon" --result "${STATUS_FOUND}" --color GREEN
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NFS_DAEMON_RUNNING=1
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fi
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fi
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#
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#################################################################################
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#
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# Test : STRG-1924
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# Description : Check missing nfs in rpcinfo while NFS is running
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#Register --test-no STRG-1924 --weight L --network NO --category security --description "Checking NFS daemon"
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#if [ ${SKIPTEST} -eq 0 ]; then
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#
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#################################################################################
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#
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# Test : STRG-1926
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# Description : Check NFS exports
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if [ ${NFS_DAEMON_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
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Register --test-no STRG-1926 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Checking NFS exports"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: check /etc/exports"
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if [ -f ${ROOTDIR}etc/exports ]; then
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LogText "Result: ${ROOTDIR}etc/exports exists"
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FIND=$(${GREPBINARY} -v "^$" ${ROOTDIR}etc/exports | ${GREPBINARY} -v "^#" | ${SEDBINARY} 's/ /!space!/g')
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if [ ! -z "${FIND}" ]; then
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for I in ${FIND}; do
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I=$(echo ${I} | ${SEDBINARY} 's/!space!/ /g')
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LogText "Found line: ${I}"
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done
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else
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LogText "Result: ${ROOTDIR}etc/exports does not contain exported file systems"
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NFS_EXPORTS_EMPTY=1
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fi
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Display --indent 4 --text "- Checking ${ROOTDIR}etc/exports" --result "${STATUS_FOUND}" --color GREEN
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else
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LogText "Result: file /etc/exports does not exist"
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Display --indent 4 --text "- Checking ${ROOTDIR}etc/exports" --result "${STATUS_NOT_FOUND}" --color WHITE
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fi
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fi
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#
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#################################################################################
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#
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# Test : STRG-1928
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# Description : Check for empty exports file while NFS is running
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if [ ${NFS_DAEMON_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
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Register --test-no STRG-1928 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Checking empty /etc/exports"
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if [ ${SKIPTEST} -eq 0 ]; then
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if [ ${NFS_EXPORTS_EMPTY} -eq 1 ]; then
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Display --indent 6 --text "- Checking empty /etc/exports" --result "${STATUS_SUGGESTION}" --color YELLOW
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LogText "Result: ${ROOTDIR}etc/exports seems to have no exported file systems"
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ReportSuggestion ${TEST_NO} "/etc/exports has no exported file systems, while NFS daemon is running. Check if NFS needs to run on this system"
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fi
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fi
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#
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#################################################################################
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#
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# Test : STRG-1930
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# Description : Check client access to nfs share
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if [ ${NFS_DAEMON_RUNNING} -eq 1 -a ${NFS_EXPORTS_EMPTY} -eq 0 -a ! "${SHOWMOUNTBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
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Register --test-no STRG-1930 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check client access to nfs share"
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if [ ${SKIPTEST} -eq 0 ]; then
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sFIND=$(${SHOWMOUNTBINARY} -e | ${AWKBINARY} '{ print $2 }' | ${SEDBINARY} '1d' | ${GREPBINARY} "\*")
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if [ ! -z "${sFIND}" ]; then
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LogText "Result: all client are allowed to access a NFS share in /etc/exports"
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Display --indent 4 --text "- Checking NFS client access" --result "ALL CLIENTS" --color YELLOW
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ReportSuggestion ${TEST_NO} "Specify clients that are allowed to access a NFS share /etc/exports"
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AddHP 2 3
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else
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LogText "Result: only some clients are allowed to access a NFS share"
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Display --indent 4 --text "- Checking NFS client access" --result "${STATUS_OK}" --color GREEN
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AddHP 3 3
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fi
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fi
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#
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#################################################################################
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#
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WaitForKeyPress
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#
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#================================================================================
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# Lynis - Security Auditing and System Hardening for Linux and UNIX - https://cisofy.com
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