mirror of https://github.com/CISOfy/lynis.git
Start of refactor fail2ban tests and splitting them into different test areas
This commit is contained in:
Michael Boelen
parent
8a95b49913
commit
f1dc6be5bf
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@ -30,6 +30,7 @@
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FAIL2BAN_FOUND=0
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FAIL2BAN_EMAIL=0
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FAIL2BAN_SILENT=0
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PERFORM_FAIL2BAN_TESTS=0
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#
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#################################################################################
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#
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@ -181,102 +182,125 @@
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# Continue if tooling is available and configuration file found
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if [ ${FAIL2BAN_FOUND} -eq 1 -a ! "${FAIL2BAN_CONFIG}" = "" ]; then
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LogText "Result: found configuration file (${FAIL2BAN_CONFIG})"
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# Check email alert configuration
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LogText "Test: checking for email actions within ${FAIL2BAN_CONFIG}"
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FIND=`egrep "^action = \%\(action_m.*\)s" ${FAIL2BAN_CONFIG}`
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FIND2=`egrep "^action = \%\(action_\)s" ${FAIL2BAN_CONFIG}`
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if [ ! "${FIND}" = "" ]; then
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FAIL2BAN_EMAIL=1
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LogText "Result: found at least one jail which sends an email alert"
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fi
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if [ ! "${FIND2}" = "" ]; then
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FAIL2BAN_SILENT=1
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LogText "Result: found at least one jail which does NOT send an email alert"
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fi
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if [ ${FAIL2BAN_SILENT} -eq 0 ] && [ ${FAIL2BAN_EMAIL} -eq 0 ]; then
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LogText "No registered actions found in ${FAIL2BAN_CONFIG}"
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Display --indent 4 --text "- Checking Fail2ban actions" --result "${STATUS_NONE}" --color RED
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ReportWarning "${TEST_NO}" "M" "${FAIL2BAN_CONFIG}" "There are no actions configured for Fail2ban."
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AddHP 0 3
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fi
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if [ ${FAIL2BAN_SILENT} -eq 0 ] && [ ${FAIL2BAN_EMAIL} -eq 1 ]; then
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LogText "All actions in ${FAIL2BAN_CONFIG} are configured to send email alerts"
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Display --indent 4 --text "- Checking Fail2ban actions" --result "${STATUS_OK}" --color GREEN
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AddHP 3 3
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fi
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if [ ${FAIL2BAN_SILENT} -eq 1 ] && [ ${FAIL2BAN_EMAIL} -eq 1 ]; then
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LogText "Some actions found in ${FAIL2BAN_CONFIG} are configured to send email alerts"
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Display --indent 4 --text "- Checking Fail2ban actions" --result PARTIAL --color YELLOW
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ReportSuggestion "${TEST_NO}" "Some Fail2ban jails are configured with non-notified actions. Consider changing these to emailed alerts."
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AddHP 2 3
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fi
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if [ ${FAIL2BAN_SILENT} -eq 1 ] && [ ${FAIL2BAN_EMAIL} -eq 0 ]; then
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LogText "None of the actions found in ${FAIL2BAN_CONFIG} are configured to send email alerts"
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Display --indent 4 --text "- Checking Fail2ban actions" --result "${STATUS_NONE}" --color YELLOW
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ReportSuggestion "${TEST_NO}" "None of the Fail2ban jails are configured to send email notifications. Consider changing these to emailed alerts."
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AddHP 1 3
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fi
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# Check at least one enabled jail
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LogText "Checking for enabled jails within ${FAIL2BAN_CONFIG}"
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FIND=`egrep "^enabled\s*=\s*true" ${FAIL2BAN_CONFIG}`
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if [ ! "${FIND}" = "" ]; then
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LogText "Result: found at least one enabled jail"
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Display --indent 4 --text "- Checking Fail2ban jails" --result "${STATUS_ENABLED}" --color GREEN
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AddHP 3 3
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else
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LogText "Result: Fail2ban installed but completely disabled"
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Display --indent 4 --text "- Checking Fail2ban jails" --result "${STATUS_DISABLED}" --color RED
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AddHP 0 3
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ReportWarning "${TEST_NO}" "M" "All jails in Fail2ban are disabled" "${FAIL2BAN_CONFIG}"
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fi
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# Confirm at least one iptables chain for fail2ban
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LogText "Checking for fail2ban iptables chains"
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if [ ! "${IPTABLESBINARY}" = "" ]; then
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CHECK_CHAINS=`${IPTABLESBINARY} -L 2>&1 | grep fail2ban`
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if [ ! "${CHECK_CHAINS}" = "" ]; then
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LogText "Result: found at least one iptables chain for fail2ban"
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Display --indent 4 --text "- Checking for Fail2ban iptables chain" --result "${STATUS_OK}" --color GREEN
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else
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LogText "Result: Fail2ban installed but iptables chain not present - fail2ban will not work"
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Display --indent 4 --text "- Checking for Fail2ban iptables chain" --result "${STATUS_WARNING}" --color RED
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AddHP 0 3
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ReportSuggestion "${TEST_NO}" "M" "Check config to see why iptables does not have a fail2ban chain" "${FAIL2BAN_CONFIG}"
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fi
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else
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Display --indent 4 --text "- Checking for Fail2ban iptables chain" --result "${STATUS_WARNING}" --color RED
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ReportSuggestion "${TEST_NO}" "H" "iptables doesn't seem to be installed; Fail2ban will not work. Remove Fail2ban or install iptables" "${FAIL2BAN_CONFIG}"
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fi
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Report "fail2ban_config=${FAIL2BAN_CONFIG}"
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FAIL2BANCLIENT=$(which fail2ban-client 2> /dev/null)
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if [ ! -z "${FAIL2BANCLIENT}" ]; then PERFORM_FAIL2BAN_TESTS=1; fi
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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 : TOOL-5104
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# Description : Check for Fail2ban enabled tests
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if [ ${PERFORM_FAIL2BAN_TESTS} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
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Register --test-no TOOL-5104 --weight L --network NO --preqs-met ${PREQS_MET} --category security --description "Enabled tests in Fail2ban"
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if [ ${SKIPTEST} -eq 0 ]; then
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FIND=$(${FAIL2BANCLIENT} -d | tr -d '[]' | tr -d "'" | awk -F, '{ if ($1=="add") { print $2 }}' | tr -d ' ')
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if [ ! "${FIND}" = "" ]; then
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for F2BSERVICE in ${FIND}; do
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LogText "Result: service '${F2BSERVICE}' enabled"
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Report "fail2ban_enabled_service[]=${F2BSERVICE}"
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done
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LogText "Result: found at least one enabled jail"
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Display --indent 4 --text "- Checking Fail2ban jails" --result "${STATUS_ENABLED}" --color GREEN
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AddHP 3 3
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else
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LogText "Result: Fail2ban installed but completely disabled"
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Display --indent 4 --text "- Checking Fail2ban jails" --result "${STATUS_DISABLED}" --color RED
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AddHP 0 5
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ReportWarning "${TEST_NO}" "All jails in Fail2ban are disabled" "${FAIL2BAN_CONFIG}"
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fi
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fi
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#
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#################################################################################
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#
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# These tests are temporarily disabled to split them up in different areas to check
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#
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# LogText "Result: found configuration file (${FAIL2BAN_CONFIG})"
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#
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# # Check email alert configuration
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# LogText "Test: checking for email actions within ${FAIL2BAN_CONFIG}"
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#
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# FIND=`egrep "^action = \%\(action_m.*\)s" ${FAIL2BAN_CONFIG}`
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# FIND2=`egrep "^action = \%\(action_\)s" ${FAIL2BAN_CONFIG}`
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#
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# if [ ! "${FIND}" = "" ]; then
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# FAIL2BAN_EMAIL=1
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# LogText "Result: found at least one jail which sends an email alert"
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# fi
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#
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# if [ ! "${FIND2}" = "" ]; then
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# FAIL2BAN_SILENT=1
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# LogText "Result: found at least one jail which does NOT send an email alert"
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# fi
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#
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# if [ ${FAIL2BAN_SILENT} -eq 0 ] && [ ${FAIL2BAN_EMAIL} -eq 0 ]; then
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# LogText "No registered actions found in ${FAIL2BAN_CONFIG}"
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# Display --indent 4 --text "- Checking Fail2ban actions" --result "${STATUS_NONE}" --color RED
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# ReportWarning "${TEST_NO}" "${FAIL2BAN_CONFIG}" "There are no actions configured for Fail2ban."
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# AddHP 0 3
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# fi
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#
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# if [ ${FAIL2BAN_SILENT} -eq 0 ] && [ ${FAIL2BAN_EMAIL} -eq 1 ]; then
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# LogText "All actions in ${FAIL2BAN_CONFIG} are configured to send email alerts"
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# Display --indent 4 --text "- Checking Fail2ban actions" --result "${STATUS_OK}" --color GREEN
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# AddHP 3 3
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# fi
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#
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# if [ ${FAIL2BAN_SILENT} -eq 1 ] && [ ${FAIL2BAN_EMAIL} -eq 1 ]; then
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# LogText "Some actions found in ${FAIL2BAN_CONFIG} are configured to send email alerts"
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# Display --indent 4 --text "- Checking Fail2ban actions" --result PARTIAL --color YELLOW
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# ReportSuggestion "${TEST_NO}" "Some Fail2ban jails are configured with non-notified actions. Consider changing these to emailed alerts."
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# AddHP 2 3
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# fi
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#
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# if [ ${FAIL2BAN_SILENT} -eq 1 ] && [ ${FAIL2BAN_EMAIL} -eq 0 ]; then
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# LogText "None of the actions found in ${FAIL2BAN_CONFIG} are configured to send email alerts"
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# Display --indent 4 --text "- Checking Fail2ban actions" --result "${STATUS_NONE}" --color YELLOW
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# ReportSuggestion "${TEST_NO}" "None of the Fail2ban jails are configured to send email notifications. Consider changing these to emailed alerts."
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# AddHP 1 3
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# fi
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#
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# # Check at least one enabled jail
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# LogText "Checking for enabled jails within ${FAIL2BAN_CONFIG}"
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#
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#
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#
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# # Confirm at least one iptables chain for fail2ban
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#
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# LogText "Checking for fail2ban iptables chains"
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#
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# if [ ! "${IPTABLESBINARY}" = "" ]; then
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# CHECK_CHAINS=`${IPTABLESBINARY} -L 2>&1 | grep fail2ban`
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# if [ ! "${CHECK_CHAINS}" = "" ]; then
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# LogText "Result: found at least one iptables chain for fail2ban"
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# Display --indent 4 --text "- Checking for Fail2ban iptables chain" --result "${STATUS_OK}" --color GREEN
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# else
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# LogText "Result: Fail2ban installed but iptables chain not present - fail2ban will not work"
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# Display --indent 4 --text "- Checking for Fail2ban iptables chain" --result "${STATUS_WARNING}" --color RED
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# AddHP 0 3
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# ReportSuggestion "${TEST_NO}" "Check config to see why iptables does not have a fail2ban chain" "${FAIL2BAN_CONFIG}"
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# fi
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# else
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# Display --indent 4 --text "- Checking for Fail2ban iptables chain" --result "${STATUS_WARNING}" --color RED
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# ReportSuggestion "${TEST_NO}" "iptables doesn't seem to be installed; Fail2ban will not work. Remove Fail2ban or install iptables" "${FAIL2BAN_CONFIG}"
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# fi
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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 : TOOL-5190
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# Description : Check for an IDS/IPS tool
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Register --test-no TOOL-5014 --weight L --network NO --category security --description "Check presence of IDS/IPS tool"
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Register --test-no TOOL-5190 --weight L --network NO --category security --description "Check presence of IDS/IPS tool"
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if [ ${SKIPTEST} -eq 0 ]; then
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if [ ${IDS_IPS_TOOL_FOUND} -eq 1 ]; then
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Display --indent 2 --text "- Checking for intrusion detection/prevention system" --result "${STATUS_FOUND}" --color GREEN
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Display --indent 2 --text "- Checking for IDS/IPS tooling" --result "${STATUS_FOUND}" --color GREEN
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AddHP 2 2
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else
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Display --indent 2 --text "- Checking for intrusion detection/prevention system" --result "${STATUS_NONE}" --color YELLOW
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#ReportSuggestion ${TEST_NO} "Ensure that automatic intrusion detection/prevention tools are installed"
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Display --indent 2 --text "- Checking for IDS/IPS tooling" --result "${STATUS_NONE}" --color YELLOW
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#ReportSuggestion ${TEST_NO} "Install and configure automated intrusion detection/prevention tools"
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AddHP 0 2
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fi
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fi
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