mirror of https://github.com/CISOfy/lynis.git
300 lines
14 KiB
Bash
300 lines
14 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 2007-2021, 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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# Printers and spools
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#
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#################################################################################
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#
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CUPSD_CONFIG_LOCS="${ROOTDIR}etc/cups ${ROOTDIR}usr/local/etc/cups ${ROOTDIR}private/etc/cups"
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CUPSD_CONFIG_FILE=""
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CUPSD_RUNNING=0
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CUPSD_FOUND=0
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LPD_RUNNING=0
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PRINTING_DAEMON=""
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QDAEMON_CONFIG_ENABLED=0
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QDAEMON_CONFIG_FILE=""
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QDAEMON_RUNNING=0
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#
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#################################################################################
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#
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InsertSection "${SECTION_PRINTERS_AND_SPOOLS}"
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#
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#################################################################################
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#
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# Test : PRNT-2302
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# Description : Check printcap file consistency
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Register --test-no PRNT-2302 --os FreeBSD --weight L --network NO --category security --description "Check for printcap consistency"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Searching /usr/sbin/chkprintcap"
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if [ ! -f ${ROOTDIR}usr/sbin/chkprintcap ]; then
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Display --indent 2 --text "- Checking chkprintcap" --result "${STATUS_NOT_FOUND}" --color WHITE
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LogText "Result: ${ROOTDIR}usr/sbin/chkprintcap NOT found, test skipped"
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else
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LogText "Result: ${ROOTDIR}usr/sbin/chkprintcap found"
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FIND=$(${ROOTDIR}usr/sbin/chkprintcap > /dev/null ; echo $?)
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# Only an exit code of zero should come back. Use string instead of integer, due unexpected trash
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if [ "${FIND}" = "0" ]; then
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Display --indent 2 --text "- Integrity check of printcap file" --result "${STATUS_OK}" --color GREEN
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LogText "Result: chkprintcap did NOT gave any warnings"
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else
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Display --indent 2 --text "- Integrity check of printcap file" --result "${STATUS_WARNING}" --color RED
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ReportSuggestion "${TEST_NO}" "Run chkprintcap manually to test printcap file"
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LogText "Output from chkprintcap: ${FIND}"
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LogText "Run chkprintcap and check the ${ROOTDIR}etc/printcap file"
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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 : PRNT-2304
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# Description : Check cupsd status
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Register --test-no PRNT-2304 --weight L --network NO --category security --description "Check cupsd status"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Checking cupsd status"
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if IsRunning "cupsd"; then
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Display --indent 2 --text "- Checking cups daemon" --result "${STATUS_RUNNING}" --color GREEN
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LogText "Result: cups daemon running"
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CUPSD_RUNNING=1; PRINTING_DAEMON="cups"
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else
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Display --indent 2 --text "- Checking cups daemon" --result "${STATUS_NOT_FOUND}" --color WHITE
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LogText "Result: cups daemon not running, cups daemon tests skipped"
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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 : PRNT-2306
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# Description : Check CUPSd configuration file
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if [ ${CUPSD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
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Register --test-no PRNT-2306 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check CUPSd configuration file"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Searching cupsd configuration file"
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for DIR in ${CUPSD_CONFIG_LOCS}; do
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if [ -f ${DIR}/cupsd.conf ]; then
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if FileIsReadable ${DIR}/cupsd.conf; then
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CUPSD_CONFIG_FILE="${DIR}/cupsd.conf"
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LogText "Result: found ${CUPSD_CONFIG_FILE}"
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fi
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fi
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done
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if HasData "${CUPSD_CONFIG_FILE}"; then
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Display --indent 2 --text "- Checking CUPS configuration file" --result "${STATUS_OK}" --color GREEN
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LogText "Result: configuration file found (${CUPSD_CONFIG_FILE})"
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CUPSD_FOUND=1
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else
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Display --indent 2 --text "- Checking CUPS configuration file" --result "${STATUS_NOT_FOUND}" --color RED
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LogText "Result: configuration file not found"
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LogText "Development: no CUPS configuration file found"
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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 : PRNT-2307
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# Description : Check CUPSd configuration file permissions
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# TODO : Add function
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if [ ${CUPSD_FOUND} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
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Register --test-no PRNT-2307 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check CUPSd configuration file permissions"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Checking CUPS configuration file permissions"
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FIND=$(${LSBINARY} -l ${CUPSD_CONFIG_FILE} | ${CUTBINARY} -c 2-10)
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LogText "Result: found ${FIND}"
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case "${FIND}" in
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r[w-]-[r-][w-]---- )
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Display --indent 4 --text "- File permissions" --result "${STATUS_OK}" --color GREEN
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AddHP 1 1
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;;
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* )
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Display --indent 4 --text "- File permissions" --result "${STATUS_WARNING}" --color RED
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ReportSuggestion "${TEST_NO}" "Access to CUPS configuration could be more strict."
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AddHP 1 2
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;;
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esac
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fi
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#
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#################################################################################
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#
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# Test : PRNT-2308
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# Description : Check CUPS daemon network configuration
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# Notes : Listen and SSLListen can be used
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if [ ${CUPSD_FOUND} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
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Register --test-no PRNT-2308 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check CUPSd network configuration"
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if [ ${SKIPTEST} -eq 0 ]; then
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FOUND=0
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PORT_FOUND=0
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LogText "Test: Checking CUPS daemon listening network addresses"
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# Search for Port statement
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FIND=$(${EGREPBINARY} "^Port 631" ${CUPSD_CONFIG_FILE})
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if [ -n "${FIND}" ]; then
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LogText "Result: found CUPS listening on port 631 (most likely all interfaces)"
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PORT_FOUND=1
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fi
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# Checking network addresses
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FIND=$(${EGREPBINARY} "^(SSL)?Listen" ${CUPSD_CONFIG_FILE} | ${GREPBINARY} -v "/" | ${AWKBINARY} '{ print $2 }')
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COUNT=0
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for ITEM in ${FIND}; do
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LogText "Result: found network address: ${ITEM}"
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COUNT=$((COUNT + 1))
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FOUND=1
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done
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# Check if daemon might be running on localhost
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if [ ${FOUND} -eq 0 -a ${PORT_FOUND} -eq 0 ]; then
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LogText "Result: CUPS does not look to be listening on a network port"
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elif [ ${COUNT} -eq 1 -a ${PORT_FOUND} -eq 0 ]; then
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if [ "${FIND}" = "localhost:631" -o "${FIND}" = "127.0.0.1:631" ]; then
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LogText "Result: CUPS daemon only running on localhost"
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AddHP 2 2
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else
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LogText "Result: CUPS daemon running on one or more interfaces (not limited to localhost)"
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ReportSuggestion "${TEST_NO}" "Check CUPS configuration if it really needs to listen on the network"
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AddHP 1 2
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fi
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else
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LogText "Result: CUPS daemon is running on several network addresses"
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ReportSuggestion "${TEST_NO}" "Check CUPS configuration if it really needs to run on several network addresses"
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AddHP 1 2
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fi
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# Checking sockets
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LogText "Test: Checking cups daemon listening sockets"
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FIND=$(${GREPBINARY} "^Listen" ${CUPSD_CONFIG_FILE} | ${GREPBINARY} "/" | ${AWKBINARY} '{ print $2 }')
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for ITEM in ${FIND}; do
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LogText "Found socket address: ${ITEM}"
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COUNT=$((COUNT + 1))
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done
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if [ ${COUNT} -eq 0 ]; then
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Display --indent 2 --text "- Checking CUPS addresses/sockets" --result "${STATUS_NONE}" --color WHITE
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LogText "Result: no addresses found on which CUPS daemon is listening"
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else
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Display --indent 2 --text "- Checking CUPS addresses/sockets" --result "${STATUS_FOUND}" --color GREEN
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LogText "Result: CUPS daemon is listening on network/socket"
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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 : PRNT-2314
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# Description : Check lpd status
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Register --test-no PRNT-2314 --weight L --network NO --category security --description "Check lpd status"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Checking lpd status"
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if IsRunning "lpd"; then
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Display --indent 2 --text "- Checking lp daemon" --result "${STATUS_RUNNING}" --color GREEN
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LogText "Result: lp daemon running"
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LPD_RUNNING=1; PRINTING_DAEMON="lp"
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else
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Display --indent 2 --text "- Checking lp daemon" --result "${STATUS_NOT_RUNNING}" --color WHITE
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LogText "Result: lp daemon not running"
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AddHP 4 4
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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 : PRNT-2316
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# Description : Check /etc/qconfig file
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Register --test-no PRNT-2316 --os AIX --weight L --network NO --category security --description "Checking /etc/qconfig file"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Checking ${ROOTDIR}etc/qconfig"
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QDAEMON_CONFIG_FILE="${ROOTDIR}etc/qconfig"
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FileIsReadable ${QDAEMON_CONFIG_FILE}
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if [ ${CANREAD} -eq 1 ]; then
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FIND=$(${GREPBINARY} -v "^\*" ${QDAEMON_CONFIG_FILE} | ${EGREPBINARY} "backend|device")
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if [ -n "${FIND}" ]; then
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LogText "Result: printers are defined in ${QDAEMON_CONFIG_FILE}"
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Display --indent 2 --text "- Checking /etc/qconfig file" --result "${STATUS_FOUND}" --color GREEN
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QDAEMON_CONFIG_ENABLED=1
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else
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LogText "Result: ${QDAEMON_CONFIG_FILE} is empty. No printers are defined"
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Display --indent 2 --text "- Checking /etc/qconfig file" --result EMPTY --color WHITE
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fi
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else
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LogText "Result: Can not read ${QDAEMON_CONFIG_FILE} (no permission)"
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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 : PRNT-2418
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# Description : Check qdaemon printer spooler status
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Register --test-no PRNT-2418 --os AIX --weight L --network NO --category security --description "Checking qdaemon printer spooler status"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Checking qdaemon status"
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if IsRunning "qdaemon"; then
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LogText "Result: qdaemon daemon running"
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Display --indent 2 --text "- Checking qdaemon daemon" --result "${STATUS_RUNNING}" --color GREEN
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QDAEMON_RUNNING=1; PRINTING_DAEMON="qdaemon"
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else
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if [ ${QDAEMON_CONFIG_ENABLED} -eq 1 ]; then
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LogText "Result: qdaemon daemon not running"
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Display --indent 2 --text "- Checking qdaemon daemon" --result "${STATUS_NOT_RUNNING}" --color RED
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ReportSuggestion "${TEST_NO}" "Activate print spooler daemon (qdaemon) in order to process print jobs"
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else
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LogText "Result: qdaemon daemon not running"
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Display --indent 2 --text "- Checking qdaemon daemon" --result "${STATUS_NOT_RUNNING}" --color WHITE
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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 : PRNT-2420
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# Description : Checking old print jobs
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Register --test-no PRNT-2420 --os AIX --weight L --network NO --category security --description "Checking old print jobs"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Checking old print jobs"
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DirectoryExists ${ROOTDIR}var/spool/lpd/qdir
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if [ ${DIRECTORY_FOUND} -eq 1 ]; then
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FIND=$(find ${ROOTDIR}var/spool/lpd/qdir -type f -mtime +1 2> /dev/null | ${SEDBINARY} 's/ /!space!/g')
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if HasData "${FIND}"; then
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COUNT=0
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for ITEM in ${FIND}; do
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FILE=$(echo ${ITEM} | ${SEDBINARY} 's/!space!/ /g')
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LogText "Found old print job: ${FILE}"
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COUNT=$((COUNT + 1))
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done
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LogText "Result: Found ${COUNT} old print jobs in /var/spool/lpd/qdir"
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Display --indent 4 --text "- Checking old print jobs" --result "${STATUS_FOUND}" --color YELLOW
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ReportSuggestion "${TEST_NO}" "Check old print jobs in /var/spool/lpd/qdir to prevent new jobs from being processed"
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LogText "Risk: Failed or defunct print jobs can occupy a lot of space and in some cases, prevent new jobs from being processed"
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else
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LogText "Result: Old print jobs not found in /var/spool/lpd/qdir"
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Display --indent 4 --text "- Checking old print jobs" --result "${STATUS_NONE}" --color GREEN
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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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if [ -n "${PRINTING_DAEMON}" ]; then Report "printing_daemon=${PRINTING_DAEMON}"; fi
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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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