lynis/include/tests_storage_nfs

#!/bin/sh

#################################################################################
#
#   Lynis
# ------------------
#
# Copyright 2007-2015, Michael Boelen (michael@rootkit.nl), The Netherlands
# Web site: http://www.rootkit.nl
#
# 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.
#
#################################################################################
#
# NFS
#
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#
    InsertSection "NFS"
#
#################################################################################
#
    NFS_DAEMON_RUNNING=0
    NFS_EXPORTS_EMPTY=0
#
#################################################################################
#
    # Test        : STRG-1902
    # Description : Check rpcinfo
    if [ ! "${RPCINFOBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no STRG-1902 --preqs-met ${PREQS_MET} --weight L --network NO --description "Check rpcinfo registered programs"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: Checking rpcinfo registered programs"
        FIND=`${RPCINFOBINARY} -p 2> /dev/null | tr -s ' ' ','`
        for I in ${FIND}; do
            logtext "rpcinfo: ${I}"
        done
        Display --indent 2 --text "- Query rpc registered programs" --result "DONE" --color GREEN
    fi
#
#################################################################################
#
    # Test        : STRG-1904
    # Description : Check nfs versions in rpcinfo
    if [ ! "${RPCINFOBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no STRG-1904 --preqs-met ${PREQS_MET} --weight L --network NO --description "Check nfs rpc"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: Checking NFS registered versions"
        FIND=`${RPCINFOBINARY} -p 2> /dev/null | ${AWKBINARY} '{ if ($5=="nfs") { print $2 } }' | uniq | sort`
        for I in ${FIND}; do
            logtext "Found version: ${I}"
        done
        Display --indent 2 --text "- Query NFS versions" --result "DONE" --color GREEN
    fi
#
#################################################################################
#
    # Test        : STRG-1906
    # Description : Check nfs protocols (TCP/UDP) and port in rpcinfo
    if [ ! "${RPCINFOBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi    
    Register --test-no STRG-1906 --preqs-met ${PREQS_MET} --weight L --network NO --description "Check nfs rpc"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: Checking NFS registered protocols"
        FIND=`${RPCINFOBINARY} -p 2> /dev/null | ${AWKBINARY} '{ if ($5=="nfs") { print $3 } }' | uniq | sort`
        for I in ${FIND}; do
            logtext "Found protocol: ${I}"
        done
        if [ "${FIND}" = "" ]; then
            logtext "Output: no NFS protocols found"
        fi

        # Check port number
        logtext "Test: Checking NFS registered ports"
        FIND=`${RPCINFOBINARY} -p 2> /dev/null | ${AWKBINARY} '{ if ($5=="nfs") { print $3 } }' | uniq | sort`
        for I in ${FIND}; do
            logtext "Found port: ${I}"
        done
        if [ "${FIND}" = "" ]; then
            logtext "Output: no NFS port number found"
        fi
        Display --indent 2 --text "- Query NFS protocols" --result "DONE" --color GREEN
    fi
#
#################################################################################
#
    # Test        : STRG-1920
    # Description : Check for running NFS daemons
    Register --test-no STRG-1920 --weight L --network NO --description "Checking NFS daemon"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: Checking running NFS daemon"
        FIND=`${PSBINARY} ax | grep "nfsd" | grep -v "grep"`
        if [ "${FIND}" = "" ]; then
            logtext "Output: NFS daemon is not running"
            Display --indent 2 --text "- Check running NFS daemon" --result "NOT FOUND" --color WHITE
          else
            logtext "Output: NFS daemon is running"
            Display --indent 2 --text "- Check running NFS daemon" --result "FOUND" --color GREEN
            NFS_DAEMON_RUNNING=1
        fi
    fi
#
#################################################################################
#
    # Test        : STRG-1924
    # Description : Check missing nfs in rpcinfo while NFS is running
    #Register --test-no STRG-1924 --weight L --network NO --description "Checking NFS daemon"
    #if [ ${SKIPTEST} -eq 0 ]; then
#
#################################################################################
#
    # Test        : STRG-1926
    # Description : Check NFS exports
    if [ ${NFS_DAEMON_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no STRG-1926 --preqs-met ${PREQS_MET} --weight L --network NO --description "Checking NFS exports"
    if [ ${SKIPTEST} -eq 0 ]; then    
        logtext "Test: check /etc/exports"
        if [ -f /etc/exports ]; then
            logtext "Result: /etc/exports exists"
            FIND=`cat /etc/exports | grep -v "^$" | grep -v "^#" | sed 's/ /!space!/g'`
            if [ ! "${FIND}" = "" ]; then
                for I in ${FIND}; do
                    I=`echo ${I} | sed 's/!space!/ /g'`
                    logtext "Found line: ${I}"
                done
              else
                logtext "Result: /etc/exports does not contain exported file systems"
                NFS_EXPORTS_EMPTY=1
            fi
            Display --indent 4 --text "- Checking /etc/exports" --result "FOUND" --color GREEN
          else
            logtext "Result: file /etc/exports does not exist"
            Display --indent 4 --text "- Checking /etc/exports" --result "NOT FOUND" --color WHITE
        fi
    fi
#
#################################################################################
#
    # Test        : STRG-1928
    # Description : Check for empty exports file while NFS is running
    if [ ${NFS_DAEMON_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi    
    Register --test-no STRG-1928 --preqs-met ${PREQS_MET} --weight L --network NO --description "Checking empty /etc/exports"
    if [ ${SKIPTEST} -eq 0 ]; then
        if [ ${NFS_EXPORTS_EMPTY} -eq 1 ]; then
            Display --indent 6 --text "- Checking empty /etc/exports" --result SUGGESTION --color YELLOW
            logtext "Result: /etc/exports seems to have no exported file systems"
            ReportSuggestion ${TEST_NO} "/etc/exports has no exported file systems, while NFS daemon is running. Check if NFS needs to run on this system"
        fi
    fi
#
#################################################################################
#
    # Test        : STRG-1930
    # Description : Check client access to nfs share
    if [ ${NFS_DAEMON_RUNNING} -eq 1 -a ${NFS_EXPORTS_EMPTY} -eq 0 -a ! "${SHOWMOUNTBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no STRG-1930 --preqs-met ${PREQS_MET} --weight L --network NO --description "Check client access to nfs share"
    if [ ${SKIPTEST} -eq 0 ]; then
        #logtext "Test: "
        sFIND=`${SHOWMOUNTBINARY} -e | awk '{ print $2 }' | sed '1d'| grep "\*"`
        if [ "${sFIND}" != "" ]; then
            logtext "Result: all client are allowed to access a NFS share in /etc/exports"
            Display --indent 4 --text "- Checking NFS client access" --result "ALL CLIENTS" --color YELLOW
            ReportSuggestion ${TEST_NO} "Specify clients that are allowed to access a NFS share /etc/exports"
            AddHP 2 3
        else
            logtext "Result: only some clients are allowed to access a NFS share"
            Display --indent 4 --text "- Checking NFS client access" --result OK --color GREEN
            AddHP 3 3
        fi
    fi
#
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#

wait_for_keypress

#
#================================================================================
# Lynis - Copyright 2007-2015, Michael Boelen - www.rootkit.nl - The Netherlands