lynis/include/tests_webservers

#!/bin/sh

#################################################################################
#
#   Lynis
# ------------------
#
# Copyright 2007-2013, Michael Boelen
# Copyright 2007-2021, 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.
#
#################################################################################
#
# Software: webserver
#
#################################################################################
#
    InsertSection "${SECTION_WEBSERVER}"
#
#################################################################################
#
    # Reset Apache status
    APACHE_INSTALLED=0
    APACHE_MODULES_ENABLED_LOCS="${ROOTDIR}etc/apache2/mods-enabled"
    APACHE_MODULES_LOCS="${ROOTDIR}etc/httpd/modules ${ROOTDIR}opt/local/apache2/modules ${ROOTDIR}usr/lib/apache ${ROOTDIR}usr/lib/apache2 ${ROOTDIR}usr/lib/httpd/modules ${ROOTDIR}usr/libexec/apache2 ${ROOTDIR}usr/lib64/apache2 ${ROOTDIR}usr/lib64/apache2/modules ${ROOTDIR}usr/lib64/httpd/modules ${ROOTDIR}usr/local/libexec/apache ${ROOTDIR}usr/local/libexec/apache22 ${ROOTDIR}usr/local/libexec/apache24"
    NGINX_RUNNING=0
    NGINX_CONF_LOCS="${ROOTDIR}etc/nginx ${ROOTDIR}usr/local/etc/nginx ${ROOTDIR}usr/local/nginx/conf"
    NGINX_CONF_LOCATION=""
    NGINX_CONF_FILES=""
    NGINX_CONF_FILES_ADDITIONS=""
#
#################################################################################
#
    sTEST_APACHE_TARGETS="${ROOTDIR}etc/apache ${ROOTDIR}etc/apache2 ${ROOTDIR}etc/httpd \
        ${ROOTDIR}opt/apache \
        ${ROOTDIR}usr/local/apache ${ROOTDIR}usr/local/apache2 \
        ${ROOTDIR}usr/local/etc/apache ${ROOTDIR}usr/local/etc/apache2 ${ROOTDIR}usr/local/etc/apache22 \
        ${ROOTDIR}usr/pkg/etc/httpd ${ROOTDIR}etc/sysconfig/apache2 ${ROOTDIR}usr/local/etc/apache24"

    CreateTempFile || ExitFatal
    TMPFILE="${TEMP_FILE}"
    CreateTempFile || ExitFatal
    TMPFILE2="${TEMP_FILE}"
    CreateTempFile || ExitFatal
    TMPFILE3="${TEMP_FILE}"
#
#################################################################################
#
    # Test        : HTTP-6622
    # Description : Test for Apache installation
    # Notes       : Do not run on NetBSD, -v is unknown option for httpd binary
    #               On OpenBSD do not run /usr/sbin/httpd with -v: builtin non-Apache
    if [ ! "${OS}" = "NetBSD" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6622 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Checking Apache presence"
    if [ ${SKIPTEST} -eq 0 ]; then
        if [ "${OS}" = "OpenBSD" -a "${HTTPDBINARY}" = "/usr/sbin/httpd" ]; then HTTPDBINARY=""; fi
        if IsEmpty "${HTTPDBINARY}"; then
            Display --indent 2 --text "- Checking Apache" --result "${STATUS_NOT_FOUND}" --color WHITE
        else
            LogText "Test: Scanning for Apache binary"
            IS_APACHE=$(${HTTPDBINARY} -v 2> /dev/null | ${GREPBINARY} -E '[aA]pache')
            if IsEmpty "${IS_APACHE}"; then
                LogText "Result: ${HTTPDBINARY} is not Apache"
                Display --indent 2 --text "- Checking Apache (binary ${HTTPDBINARY})" --result "NO MATCH" --color WHITE
            else
                Display --indent 2 --text "- Checking Apache (binary ${HTTPDBINARY})" --result "${STATUS_FOUND}" --color GREEN
                LogText "Result: ${HTTPDBINARY} seems to be Apache HTTP daemon"
                APACHE_INSTALLED=1
                APACHE_VERSION=$(${HTTPDBINARY} -v 2> /dev/null | ${GREPBINARY} "^Server version:" | ${AWKBINARY} '{ print $3 }' | ${AWKBINARY} -F/ '{ print $2 }')
                LogText "Apache version: ${APACHE_VERSION}"
                Report "apache_version=${APACHE_VERSION}"
            fi
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6624
    # Description : Testing main Apache configuration file
    # Notes       : Do not run on OpenBSD/NetBSD, as -V is an unknown option for httpd binary
    if [ ${APACHE_INSTALLED} -eq 1 ]; then
        if [ ! "${OS}" = "NetBSD" -a ! "${OS}" = "OpenBSD" ]; then
            PREQS_MET="YES"
        else
            PREQS_MET="NO"
        fi
    else
        PREQS_MET="NO"
    fi
    Register --test-no HTTP-6624 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Testing main Apache configuration file"
    if [ ${SKIPTEST} -eq 0 ]; then
        APACHE_CONFIGFILE=""
        APACHE_TEST=$(${HTTPDBINARY} -V 2> /dev/null | ${GREPBINARY} "\-D SERVER_CONFIG_FILE=" | ${SEDBINARY} 's/[ ]-D SERVER_CONFIG_FILE=//' | ${TRBINARY} -d '"' | ${TRBINARY} -d ' ' | ${TRBINARY} -d '[:cntrl:]')

        if IsEmpty "${APACHE_TEST}"; then
            LogText "Result: Can't find the configuration file, so skipping some Apache related tests"
        else
            # We found a possible match. Checking if it's valid filename. If not, we need to add a prefix
            if [ -f ${APACHE_TEST} ]; then
                APACHE_CONFIGFILE="${APACHE_TEST}"
                Display --indent 6 --text "Info: Configuration file found (${APACHE_CONFIGFILE})"
            else
                # Probably the prefix is missing, so we are going to search that
                APACHE_HTTPDROOT=$(${HTTPDBINARY} -V 2> /dev/null | ${GREPBINARY} "\-D HTTPD_ROOT=" | ${SEDBINARY} 's/[ ]-D HTTPD_ROOT=//' | ${TRBINARY} -d '"' | ${TRBINARY} -d ' ')
                APACHE_TESTFILE="${APACHE_HTTPDROOT}/${APACHE_TEST}"
                if [ -f ${APACHE_TESTFILE} ]; then
                    APACHE_CONFIGFILE="${APACHE_TESTFILE}"
                    Display --indent 6 --text "Info: Configuration file found (${APACHE_CONFIGFILE})"
                    LogText "Result: Configuration file found (${APACHE_CONFIGFILE})"
                else
                    LogText "Result: File or directory ${APACHE_TESTFILE} does not exist"
                    Display --indent 6 --text "[Notice] possible directory/file parts found, but still unsure what the real configuration file is. Skipping some Apache related tests"
                    ReportException "${TEST_NO}:1" "Found some unknown directory or file references in Apache configuration"
                    LogText "Note: if only the Apache binary package has been installed, then the configuration might be missing. Is the Apache package really needed?"
                fi
            fi
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6626
    # Description : Testing other Apache configuration files
    if [ ${APACHE_INSTALLED} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6626 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Testing other Apache configuration file"
    if [ ${SKIPTEST} -eq 0 ]; then
        for DIR in ${sTEST_APACHE_TARGETS}; do
            if [ -d ${DIR} ]; then
                find ${DIR} -name "*.conf" -print >> ${TMPFILE2}
            fi
        done

        # Sort unsorted list, save it in temp file and then remove unsorted list
        if [ -f ${TMPFILE2} ]; then
            ${SORTBINARY} -u ${TMPFILE2} >> ${TMPFILE}
            rm -f ${TMPFILE2}
        fi
        cVHOSTS=0; tVHOSTS=""

        # Check every configuration file
        for I in $(cat ${TMPFILE}); do
            LogText "Apache config file: ${I}"

            FileIsReadable ${I}
            if [ ${CANREAD} -eq 1 ]; then
                # Search Virtual Hosts
                for J in $(${GREPBINARY} "ServerName" ${I} | ${GREPBINARY} -v "^#" | ${AWKBINARY} '{ if ($1=="ServerName" && $2!="*" && $2!="default") print $2 }'); do
                    if HasData "${J}"; then
                        tVHOSTS="${tVHOSTS} ${J}"
                        cVHOSTS=$((cVHOSTS + 1))
                    fi
                done
                # Search Server aliases
                for J in $(${GREPBINARY} "ServerAlias" ${I} | ${GREPBINARY} -v "^#" | ${SEDBINARY} "s/\s*ServerAlias //g" | ${SEDBINARY} "s/#.*//g"); do
                    if [ -n "${J}" ]; then
                        tVHOSTS="${tVHOSTS} ${J}"
                        cVHOSTS=$((cVHOSTS + 1))
                    fi
                done
            else
                LogText "Result: can not read configuration file with this user ID"
                ReportException "${TEST_NO}:1" "Can not read configuration file $I"
            fi
        done

        # Log all virtual hosts we found
            for J in ${tVHOSTS}; do
                if [ -n "${J}" ]; then
                    LogText "Virtual host: ${J}"
                    #Report "apache_vhost_name[]=${J}"
                fi
            done

        # Show number of vhosts if we found any
        LogText "Result: found ${cVHOSTS} virtual hosts"
        if [ ${cVHOSTS} -gt 0 ]; then
            Display --indent 6 --text "Info: Found ${cVHOSTS} virtual hosts"
        else
            Display --indent 6 --text "Info: No virtual hosts found"
        fi
    fi

    # Remove temp files
    if [ -f ${TMPFILE} -a -n "${TMPFILE}" ]; then
        rm -f ${TMPFILE}
    fi
    if [ -n "${TMPFILE2}" ]; then if [ -f ${TMPFILE2} ]; then rm -f ${TMPFILE2}; fi; fi
#
#################################################################################
#
    # TODO
    # Do you have Apache running and want to contribute? Help us testing this control and send in a pull request

    # Test        : HTTP-6630
    # Description : Search for all loaded modules
    #if [ ${APACHE_INSTALLED} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    #Register --test-no HTTP-6630 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Determining all loaded Apache modules"
    #if [ ${SKIPTEST} -eq 0 ]; then
    #    # Testing Debian style
    #    LogText "Test: searching loaded/enabled Apache modules"
    #    apachectl -t -D DUMP_MODULES 2>&1 | ${GREPBINARY} -E -v "(Loaded Modules|Syntax OK)" | ${SEDBINARY} 's/(\(shared\|static\))//' | ${SEDBINARY} 's/ //'
    #    for I in ${APACHE_MODULES_ENABLED_LOCS}; do
    #        LogText "Test: checking ${I}"
    #        if [ -d ${I} ]; then
    #            FIND=$(${GREPBINARY} -r LoadModule ${I}/* | ${GREPBINARY} -v "^#" | ${AWKBINARY} '{ print $2":"$3 }')
    #          else
    #            LogText "Result: ${I} does not exist"
    #        fi
    #    done
    #fi
#
#################################################################################
#
    # Test        : HTTP-6632
    # Description : Search for available Apache modules
    if [ ${APACHE_INSTALLED} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6632 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Determining all available Apache modules"
    if [ ${SKIPTEST} -eq 0 ]; then
        LogText "Test: searching available Apache modules"
        COUNT=0
        for DIR in ${APACHE_MODULES_LOCS}; do
            DirectoryExists ${DIR}
            if [ ${DIRECTORY_FOUND} -eq 1 ]; then
                FIND=$(${FINDBINARY} ${DIR} -name "mod_*" -print | ${SORTBINARY})
                for ITEM in ${FIND}; do
                    Report "apache_module[]=${ITEM}"
                    LogText "Result: found Apache module ${ITEM}"
                    COUNT=$((COUNT + 1))
                done
            fi
        done
        if [ ${COUNT} -eq 0 ]; then
            Display --indent 4 --text "* Loadable modules" --result "${STATUS_NONE}" --color WHITE
            ReportException "${TEST_NO}:1" "No loadable Apache modules found"
        else
            Display --indent 4 --text "* Loadable modules" --result "${STATUS_FOUND} (${COUNT})" --color GREEN
            Display --indent 8 --text "- Found ${COUNT} loadable modules"
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6640
    # Description : Search for special Apache modules: evasive
    if [ ${APACHE_INSTALLED} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6640 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Determining existence of specific Apache modules"
    if [ ${SKIPTEST} -eq 0 ]; then
        # Check modules, module
        if CheckItem "apache_module" "/mod_evasive([0-9][0-9])?.so"; then
            Display --indent 10 --text "mod_evasive: anti-DoS/brute force" --result "${STATUS_FOUND}" --color GREEN
            AddHP 3 3
        else
            Display --indent 10 --text "mod_evasive: anti-DoS/brute force" --result "${STATUS_NOT_FOUND}" --color WHITE
            AddHP 2 3
            ReportSuggestion "${TEST_NO}" "Install Apache mod_evasive to guard webserver against DoS/brute force attempts"
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6641
    # Description : Search for special Apache modules: Quality of Service
    # Notes       : Was mod_qos before. Since Apache 2.2.15 mod_reqtimeout
    if [ ${APACHE_INSTALLED} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6641 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Determining existence of specific Apache modules"
    if [ ${SKIPTEST} -eq 0 ]; then
        # Check modules, module
        if CheckItem "apache_module" "/mod_(reqtimeout|qos).so"; then
            Display --indent 10 --text "mod_reqtimeout/mod_qos" --result "${STATUS_FOUND}" --color GREEN
            AddHP 3 3
        else
            Display --indent 10 --text "mod_reqtimeout/mod_qos" --result "${STATUS_NOT_FOUND}" --color WHITE
            AddHP 2 3
            ReportSuggestion "${TEST_NO}" "Install Apache mod_reqtimeout or mod_qos to guard webserver against Slowloris attacks"
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6643
    # Description : Search for special Apache modules: security
    if [ ${APACHE_INSTALLED} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6643 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Determining existence of specific Apache modules"
    if [ ${SKIPTEST} -eq 0 ]; then
        # Check modules, module
        if CheckItem "apache_module" "/mod_security(2|3).so" ; then
            Display --indent 10 --text "ModSecurity: web application firewall" --result "${STATUS_FOUND}" --color GREEN
            AddHP 3 3
        else
            Display --indent 10 --text "ModSecurity: web application firewall" --result "${STATUS_NOT_FOUND}" --color WHITE
            AddHP 2 3
            ReportSuggestion "${TEST_NO}" "Install Apache modsecurity to guard webserver against web application attacks"
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6660
    # Description : Search for "TraceEnable off" in configuration files
    if [ ${APACHE_INSTALLED} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6660 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Checking Apache security setting: TraceEnable"
    if [ ${SKIPTEST} -eq 0 ]; then
        for DIR in ${sTEST_APACHE_TARGETS}; do
            if [ -d ${DIR} ]; then
                find ${DIR} -name "*.conf" -print >> ${TMPFILE3}
            fi
        done

        # Check all Apache conf-files for TraceEnable
        if [ -f ${TMPFILE3} ]; then
            Display --indent 2 --text '- Checking TraceEnable setting in:'
            for APACHE_CONFFILE in $(cat ${TMPFILE3}); do
                TRACEENABLE=$( ${GREPBINARY} -i -E '^TraceEnable' ${APACHE_CONFFILE} | ${AWKBINARY} '{print $2}' )
                if [ ! ${TRACEENABLE} ]; then
                    LogText "Result: no TraceEnable setting found in ${APACHE_CONFFILE}"
                    Display --indent 4 --text "  ${APACHE_CONFFILE}" --result "${STATUS_NOT_FOUND}" --color WHITE
                else
                    TRACEENABLED_SETTING=$( echo ${TRACEENABLE} | tr 'A-Z' 'a-z' )
                    if [ "x${TRACEENABLED_SETTING}" = 'xoff' ]; then
                        LogText "Result: found TraceEnable setting set to 'off' in ${APACHE_CONFFILE}"
                        Report "Apache setting: 'TraceEnable Off' in ${APACHE_CONFFILE}"
                        Display --indent 4 --text "  ${APACHE_CONFFILE}" --result "${STATUS_FOUND}" --color GREEN
                    else
                        LogText "Result: found TraceEnable setting set to '"${TRACEENABLE}"' in ${APACHE_CONFFILE}"
                        Report "Apache setting: 'TraceEnable "${TRACEENABLE}"' in ${APACHE_CONFFILE}"
                        Display --indent 4 --text "  ${APACHE_CONFFILE}" --result "${STATUS_SUGGESTION}" --color YELLOW
                        ReportSuggestion "${TEST_NO}" "Consider setting 'TraceEnable Off' in ${APACHE_CONFFILE}" "Set TraceEnable to 'On' or 'extended' for testing and diagnostic purposes only."
                    fi
                fi
            done
            rm -f ${TMPFILE3}
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6702
    # Description : Search for nginx process
    Register --test-no HTTP-6702 --weight L --network NO --category security --description "Check nginx process"
    if [ ${SKIPTEST} -eq 0 ]; then
        LogText "Test: searching running nginx process"
        if IsRunning "nginx"; then
            LogText "Result: found running nginx process(es)"
            Display --indent 2 --text "- Checking nginx" --result "${STATUS_FOUND}" --color GREEN
            NGINX_RUNNING=1
            Report "nginx_running=1"
        else
            LogText "Result: no running nginx process found"
            Display --indent 2 --text "- Checking nginx" --result "${STATUS_NOT_FOUND}" --color WHITE
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6704
    # Description : Search for nginx configuration file
    if [ ${NGINX_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6704 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check nginx configuration file"
    if [ ${SKIPTEST} -eq 0 ]; then
        LogText "Test: searching nginx configuration file"
        for DIR in ${NGINX_CONF_LOCS}; do
            if [ -f ${DIR}/nginx.conf ]; then
                NGINX_CONF_LOCATION="${DIR}/nginx.conf"
                LogText "Found file ${NGINX_CONF_LOCATION}"
                NGINX_CONF_FILES="${DIR}/nginx.conf"
            fi
        done
        if HasData "${NGINX_CONF_LOCATION}"; then
            LogText "Result: found nginx configuration file"
            Report "nginx_main_conf_file=${NGINX_CONF_LOCATION}"
            Display --indent 4 --text "- Searching nginx configuration file" --result "${STATUS_FOUND}" --color GREEN
        else
            LogText "Result: no nginx configuration file found"
            Display --indent 2 --text "- Searching nginx configuration file" --result "${STATUS_NOT_FOUND}" --color WHITE
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6706
    # Description : Search for includes within nginx configuration file
    # Notes       : Daemon nginx should be running, nginx.conf should be found
    if [ ${NGINX_RUNNING} -eq 1 -a -n "${NGINX_CONF_LOCATION}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6706 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check for additional nginx configuration files"
    if [ ${SKIPTEST} -eq 0 ]; then
        CreateTempFile || ExitFatal
        TMPFILE="${TEMP_FILE}"

        COUNT=0
        ${SEDBINARY} -e 's/^[ \t]*//' ${NGINX_CONF_LOCATION} | ${GREPBINARY} -v "^#" | ${GREPBINARY} -v "^$" | ${SEDBINARY} 's/[\t]/ /g' | ${SEDBINARY} 's/  / /g' | ${SEDBINARY} 's/  / /g' >> ${TMPFILE}
        # Search for included configuration files (may include directories and wild cards)
        FIND=$(${GREPBINARY} "include" ${NGINX_CONF_LOCATION} | ${AWKBINARY} '{ if ($1=="include") { print $2 }}' | ${SEDBINARY} 's/;$//g')
        for I in ${FIND}; do
            FIND2=$(${LSBINARY} ${I} 2>/dev/null)
            for J in ${FIND2}; do
                # Ensure that we are parsing normal files
                if [ -f ${J} ]; then
                    COUNT=$((COUNT + 1))
                    LogText "Result: found Nginx configuration file ${J}"
                    Report "nginx_sub_conf_file[]=${J}"
                    FileIsReadable ${J}
                    if [ ${CANREAD} -eq 1 ]; then
                        NGINX_CONF_FILES="${NGINX_CONF_FILES} ${J}"
                        FIND3=$(sed -e 's/^[ \t]*//' ${J} | ${GREPBINARY} -v "^#" | ${GREPBINARY} -v "^$" | ${SEDBINARY} 's/[\t]/ /g' | ${SEDBINARY} 's/  / /g' | ${SEDBINARY} 's/  / /g' >> ${TMPFILE})
                    else
                        ReportException "${TEST_NO}:1" "Can not parse file ${J}, as it is not readable"
                    fi
                fi
            done
        done

        # Sort all discovered configuration lines and store unique ones. Also strip out the mime types configured in nginx
        SORTFILE=$(${SORTBINARY} -u ${TMPFILE} | ${SEDBINARY} 's/ /:space:/g' | ${GREPBINARY} -E -v "(application|audio|image|text|video)/" | ${GREPBINARY} -E -v "({|})")
        for I in ${SORTFILE}; do
            I=$(echo ${I} | ${SEDBINARY} 's/:space:/ /g')
            Report "nginx_config_option[]=${I}";
        done

        # Remove unsorted file for next tests
        if [ -f ${TMPFILE} ]; then rm -f ${TMPFILE}; fi

        if [ ${COUNT} -eq 0 ]; then
            LogText "Result: no nginx include statements found"
        else
            Display --indent 6 --text "- Found nginx includes" --result "${COUNT} FOUND" --color GREEN
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6708
    # Description : Check discovered nginx configuration settings for further hardening
    # Notes       : Daemon of nginx should be running, nginx.conf should be found
    if [ ${NGINX_RUNNING} -eq 1 -a -n "${NGINX_CONF_FILES}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6708 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check discovered nginx configuration settings"
    if [ ${SKIPTEST} -eq 0 ]; then
        LogText "Test: start parsing all discovered nginx options"
        Display --indent 4 --text "- Parsing configuration options"
        for FILE in ${NGINX_CONF_FILES}; do
            FILENAME=$(echo ${FILE} | ${AWKBINARY} -F/ '{print $NF}')
            if [ ! "${FILENAME}" = "mime.types" ]; then
                if FileIsReadable ${FILE}; then
                    Display --indent 8 --text "- ${FILE}"
                    ParseNginx ${FILE}
                else
                    Display --indent 8 --text "- ${FILE}" --result "SKIPPED (NOT READABLE)" --color YELLOW
                fi
            else
                LogText "Result: this configuration file is skipped, as it contains usually no interesting details"
            fi
        done
        if [ -n "${NGINX_CONF_FILES_ADDITIONS}" ]; then
            for I in ${NGINX_CONF_FILES_ADDITIONS}; do
                FILENAME=$(echo ${I} | ${AWKBINARY} -F/ '{print $NF}')
                if [ ! "${FILENAME}" = "mime.types" ]; then
                    if FileIsReadable ${I}; then
                        Display --indent 8 --text "- ${I}"
                        ParseNginx ${I}
                    else
                        Display --indent 8 --text "- ${I}" --result "SKIPPED (NOT READABLE)" --color YELLOW
                    fi
                else
                    LogText "Result: this configuration file is skipped, as it contains usually no interesting details"
                fi
            done
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6710
    # Description : Check SSL configuration of nginx
    # Notes       : Daemon of nginx should be running, nginx.conf should be found
    if [ ${NGINX_RUNNING} -eq 1 -a -n "${NGINX_CONF_LOCATION}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6710 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check nginx SSL configuration settings"
    if [ ${SKIPTEST} -eq 0 ]; then
        NGINX_SSL_SUGGESTION=0
        if [ ${NGINX_SSL_ON} -eq 1 ]; then
            LogText "Result: SSL is configured in nginx on one or more virtual hosts"
            Display --indent 6 --text "- SSL configured" --result "${STATUS_YES}" --color GREEN
            AddHP 5 5
            # Cipher tests
            if [ ${NGINX_SSL_CIPHERS} -eq 1 ]; then
                Display --indent 8 --text "- Ciphers configured" --result "${STATUS_YES}" --color GREEN
            else
                Display --indent 8 --text "- Ciphers configured" --result "${STATUS_NO}" --color RED
                NGINX_SSL_SUGGESTION=1
            fi

            if [ ${NGINX_SSL_PREFER_SERVER_CIPHERS} -eq 1 ]; then
                Display --indent 8 --text "- Prefer server ciphers" --result "${STATUS_YES}" --color GREEN
            else
                Display --indent 8 --text "- Prefer server ciphers" --result "${STATUS_NO}" --color RED
                NGINX_SSL_SUGGESTION=1
            fi

            if [ ${NGINX_SSL_PROTOCOLS} -eq 1 ]; then
                Display --indent 8 --text "- Protocols configured" --result "${STATUS_YES}" --color GREEN
                if [ ${NGINX_WEAK_SSL_PROTOCOL_FOUND} -eq 0 ]; then
                    Display --indent 10 --text "- Insecure protocols found" --result "${STATUS_NO}" --color GREEN
                else
                    Display --indent 10 --text "- Insecure protocols found" --result "${STATUS_YES}" --color RED
                    ReportSuggestion "${TEST_NO}" "Disable weak protocol in nginx configuration"
                fi
            else
                Display --indent 8 --text "- Protocols configured" --result "${STATUS_NO}" --color RED
                NGINX_SSL_SUGGESTION=1
            fi
        else
            LogText "Result: No SSL configuration found"
            Display --indent 6 --text "- SSL configured" --result "${STATUS_NO}" --color RED
            ReportSuggestion "${TEST_NO}" "Add HTTPS to nginx virtual hosts for enhanced protection of sensitive data and privacy"
            AddHP 1 5
        fi
        if [ ${NGINX_SSL_SUGGESTION} -eq 1 ]; then
            LogText "Result: one or more parts of the nginx configuration could be enhanced regarding SSL"
            ReportSuggestion "${TEST_NO}" "Change the HTTPS and SSL settings for enhanced protection of sensitive data and privacy"
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6712
    # Description : Check logging configuration of nginx
    # Notes       : Daemon of nginx should be running, nginx.conf should be found
    if [ ${NGINX_RUNNING} -eq 1 -a -n "${NGINX_CONF_LOCATION}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6712 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check nginx access logging"
    if [ ${SKIPTEST} -eq 0 ]; then
        NGINX_LOG_SUGGESTION=0
        Display --indent 6 --text "- Checking log file configuration"

        # Check for missing access log
        if [ ${NGINX_ACCESS_LOG_MISSING} -eq 1 ]; then
            NGINX_LOG_SUGGESTION=1
            Display --indent 8 --text "- Missing log files (access_log)" --result "${STATUS_YES}" --color RED
        else
            Display --indent 8 --text "- Missing log files (access_log)" --result "${STATUS_NO}" --color GREEN
        fi
        # Access log disabled
        if [ ${NGINX_ACCESS_LOG_DISABLED} -eq 1 ]; then
            NGINX_LOG_SUGGESTION=1
            LogText "Result: found one or more virtual hosts which have their access log disabled"
            Display --indent 8 --text "- Disabled access logging" --result "${STATUS_YES}" --color RED
            AddHP 2 3
        else
            LogText "Result: no virtual hosts found which have their access log disabled"
            Display --indent 8 --text "- Disabled access logging" --result "${STATUS_NO}" --color GREEN
            AddHP 3 3
        fi
        # Report suggestion
        if [ ${NGINX_LOG_SUGGESTION} -eq 1 ]; then
            ReportSuggestion "${TEST_NO}" "Check your nginx access log for proper functioning"
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6714
    # Description : Check missing error logs in nginx
    if [ ${NGINX_RUNNING} -eq 1 -a -n "${NGINX_CONF_LOCATION}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6714 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check for missing error logs in nginx"
    if [ ${SKIPTEST} -eq 0 ]; then
        NGINX_LOG_SUGGESTION=0
        # Check for missing access log
        if [ ${NGINX_ERROR_LOG_MISSING} -eq 1 ]; then
            NGINX_LOG_SUGGESTION=1
            Display --indent 8 --text "- Missing log files (error_log)" --result "${STATUS_YES}" --color RED
        else
            Display --indent 8 --text "- Missing log files (error_log)" --result "${STATUS_NO}" --color GREEN
        fi
        # Report suggestion
        if [ ${NGINX_LOG_SUGGESTION} -eq 1 ]; then
            ReportSuggestion "${TEST_NO}" "Check your nginx error_log statements"
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6716
    # Description : Check debug mode on error log in nginx
    if [ ${NGINX_RUNNING} -eq 1 -a -n "${NGINX_CONF_LOCATION}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6716 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check for debug mode on error log in nginx"
    if [ ${SKIPTEST} -eq 0 ]; then
        NGINX_LOG_SUGGESTION=0
        # Access log in debug mode
        if [ ${NGINX_ERROR_LOG_DEBUG} -eq 1 ]; then
            NGINX_LOG_SUGGESTION=1
            LogText "Result: found one or more virtual hosts which have their error log in debug mode"
            Display --indent 8 --text "- Debugging mode on error_log" --result "${STATUS_YES}" --color RED
            AddHP 2 3
        else
            LogText "Result: no virtual hosts found which have their error log in debug mode"
            Display --indent 8 --text "- Debugging mode on error_log" --result "${STATUS_NO}" --color GREEN
            AddHP 3 3
        fi
        # Report suggestion
        if [ ${NGINX_LOG_SUGGESTION} -eq 1 ]; then
            ReportSuggestion "${TEST_NO}" "Check your nginx error_log statements and disable debug mode"
        fi
    fi
#
#################################################################################
#
    # Test        : HTTP-6720
    # Description : Search for nginx log files
    if [ ${NGINX_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no HTTP-6720 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check Nginx log files"
    if [ ${SKIPTEST} -eq 0 ]; then
        LogText "Test: Checking directories for files with log file definitions"
        for DIR in ${NGINX_CONF_LOCS}; do
            LogText "Test: Checking ${DIR}"
            if [ -d ${DIR} ]; then
                LogText "Result: Directory ${DIR} exists, so will be used as search path"
                FIND=$(find ${DIR} -type f -exec ${GREPBINARY} access_log \{\} \; | ${GREPBINARY} -v "#" | ${AWKBINARY} '{ if($1=="access_log") { print $2 } }' | ${SEDBINARY} 's/;$//g' | ${SORTBINARY} -u)
                if IsEmpty "${FIND}"; then
                    LogText "Result: no log files found"
                else
                    LogText "Result: found one or more log files"
                    for FILE in ${FIND}; do
                        if [ -f ${FILE} ]; then
                            LogText "Found log file: ${FILE}"
                            Report "log_file=${FILE}"
                        else
                            LogText "Found non existing log file: ${FILE}"
                        fi
                    done
                fi
            else
                LogText "Result: directory ${DIR} not found, skipping search in this directory."
            fi
        done
        unset DIR FILE FIND
    fi
#
#################################################################################
#
    # Remove temp file (double check)
    if [ -n "${TMPFILE}" ]; then if [ -f ${TMPFILE} ]; then rm -f ${TMPFILE}; fi; fi
    if [ -n "${TMPFILE2}" ]; then if [ -f ${TMPFILE2} ]; then rm -f ${TMPFILE2}; fi; fi
    if [ -n "${TMPFILE3}" ]; then if [ -f ${TMPFILE3} ]; then rm -f ${TMPFILE3}; fi; fi

    WaitForKeyPress

#
#================================================================================
# Lynis - Security Auditing and System Hardening for Linux and UNIX - https://cisofy.com