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