lynis/include/tests_accounting

#!/bin/sh

#################################################################################
#
#   Lynis
# ------------------
#
# Copyright 2007-2015, Michael Boelen (michael.boelen@cisofy.com)
# Web site: https://cisofy.com
#
# 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.
#
#################################################################################
#
    InsertSection "Accounting"
#
#################################################################################
#
    AUDITD_CONF_LOCS="/etc /etc/audit"
    AUDITD_CONF_FILE=""
    AUDITD_RUNNING=0
    SOLARIS_AUDITD_RUNNING=0
#
#################################################################################
#
    # Test        : ACCT-2754
    # Description : Check availability FreeBSD accounting data
    Register --test-no ACCT-2754 --os FreeBSD --weight L --network NO --description "Check for available FreeBSD accounting information"
    if [ ${SKIPTEST} -eq 0 ]; then
        if [ -f /var/account/acct ]; then
            Display --indent 2 --text "- Checking accounting information" --result OK --color GREEN
            logtext "Result: /var/account/acct available"
            AddHP 3 3
        else
            Display --indent 2 --text "- Checking accounting information" --result "NOT FOUND" --color YELLOW
            logtext "Result: No accounting information available"
            logtext "Remark: Possibly there is another location where the accounting data is stored"
            ReportSuggestion ${TEST_NO} "Enable process accounting"
            AddHP 2 3
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9622
    # Description : Check availability Linux accounting data
    # Notes       : /var/log/pacct (Slackware)
    Register --test-no ACCT-9622 --os Linux --weight L --network NO --description "Check for available Linux accounting information"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: Check accounting information"
        if [ -f /var/account/pacct ]; then
            Display --indent 2 --text "- Checking accounting information" --result OK --color GREEN
            logtext "Result: /var/account/pacct available"
            AddHP 3 3
        elif [ -f /var/log/account/pacct ]; then
            Display --indent 2 --text "- Checking accounting information" --result OK --color GREEN
            logtext "Result: /var/log/account/pacct available"
            AddHP 3 3
        elif [ -f /var/log/pacct ]; then
            Display --indent 2 --text "- Checking accounting information" --result OK --color GREEN
            logtext "Result: /var/log/pacct available"
            AddHP 3 3
        else
            Display --indent 2 --text "- Checking accounting information" --result "NOT FOUND" --color YELLOW
            logtext "Result: No accounting information available (/var/account/pacct, /var/log/account/pact nor /var/log/pact exist)"
            logtext "Remark: Possibly there is another location where the accounting data is stored"
            ReportSuggestion ${TEST_NO} "Enable process accounting"
            AddHP 2 3
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9626
    # Description : Check sysstat accounting data
    Register --test-no ACCT-9626 --os Linux --weight L --network NO --description "Check for sysstat accounting data"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: check /etc/default/sysstat presence"
        if [ -f /etc/default/sysstat ]; then
            logtext "Result: /etc/default/sysstat found"
            FIND=`grep "^ENABLED" /etc/default/sysstat | grep -i true`
            if [ ! "${FIND}" = "" ]; then
                logtext "Result: sysstat enabled via /etc/default/sysstat"
                Display --indent 2 --text "- Checking sysstat accounting data" --result ENABLED --color GREEN
              else
                logtext "Result: sysstat disabled via /etc/default/sysstat"
                Display --indent 2 --text "- Checking sysstat accounting data" --result DISABLED --color WHITE
                ReportSuggestion ${TEST_NO} "Enable sysstat to collect accounting (disabled)"
            fi
        elif [ -f /etc/cron.d/sysstat ]; then
            FIND=`grep -v '^[[:space:]]*\(#\|$\)' /etc/cron.d/sysstat`
            if [ ! "${FIND}" = "" ]; then
                logtext "Result: sysstat enabled via /etc/cron.d/sysstat"
                Display --indent 2 --text "- Checking sysstat accounting data" --result ENABLED --color GREEN
              else
                logtext "Result: sysstat disabled via /etc/cron.d/sysstat"
                Display --indent 2 --text "- Checking sysstat accounting data" --result DISABLED --color WHITE
                ReportSuggestion ${TEST_NO} "Enable sysstat to collect accounting (cron disabled)"
            fi
        else
            logtext "Result: sysstat not found via /etc/default/sysstat or /etc/cron.d/sysstat"
            Display --indent 2 --text "- Checking sysstat accounting data" --result "NOT FOUND" --color YELLOW
            ReportSuggestion ${TEST_NO} "Enable sysstat to collect accounting (no results)"
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9628
    # Description : Check auditd status
    if [ ! "${AUDITDBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no ACCT-9628 --os Linux --weight L --network NO --description "Check for auditd"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: Check auditd status"
        # Should not get kauditd
        IsRunning auditd
        if [ ${RUNNING} -eq 1 ]; then
            logtext "Result: auditd running"
            Display --indent 2 --text "- Checking auditd" --result ENABLED --color GREEN
            AUDITD_RUNNING=1
            report "audit_daemon_running=1"
            report "audit_trail_tool[]=auditd"
            AddHP 4 4
          else
            logtext "Result: auditd not active"
            Display --indent 2 --text "- Checking auditd" --result "NOT FOUND" --color WHITE
            if [ ! "${VMTYPE}" = "openvz" ]; then
                ReportSuggestion ${TEST_NO} "Enable auditd to collect audit information"
            fi
            AUDITD_RUNNING=0
            report "audit_daemon_running=0"
            AddHP 0 1
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9630
    # Description : Check auditd rules
    if [ ! "${AUDITDBINARY}" = "" -a ! "${AUDITCTLBINARY}" = "" -a ${AUDITD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no ACCT-9630 --os Linux --preqs-met ${PREQS_MET} --weight L --network NO --root-only YES --description "Check for auditd rules"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: Checking auditd rules"
        FIND=`${AUDITCTLBINARY} -l | grep -v "No rules"`
        if [ "${FIND}" = "" ]; then
            logtext "Result: auditd rules empty"
            Display --indent 4 --text "- Checking audit rules" --result SUGGESTION --color YELLOW
            AddHP 0 2
            ReportSuggestion ${TEST_NO} "Audit daemon is enabled with an empty ruleset. Disable the daemon or define rules"
          else
            logtext "Result: found auditd rules"
            Display --indent 4 --text "- Checking audit rules" --result OK --color GREEN
            # Log audit daemon rules
            FIND=`${AUDITCTLBINARY} -l | sed 's/ /!space!/g'`
            for I in ${FIND}; do
                I=`echo ${I} | sed 's/!space!/ /g'`
                logtext "Output: ${I}"
            done
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9632
    # Description : Check auditd configuration file
    if [ ! "${AUDITDBINARY}" = "" -a ${AUDITD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no ACCT-9632 --os Linux --preqs-met ${PREQS_MET} --weight L --network NO --description "Check for auditd configuration file"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: Checking auditd configuration file"
        for I in ${AUDITD_CONF_LOCS}; do
            if [ -f ${I}/auditd.conf ]; then
                AUDITD_CONF_FILE="${I}/auditd.conf"
                logtext "Result: Found ${I}/auditd.conf"
              else
                logtext "Result: ${I}/auditd.conf not found"
            fi
        done
        # Check if we discovered the configuration file. It should be there is the binaries are available and process is running
        if [ ! "${AUDITD_CONF_FILE}" = "" ]; then
            Display --indent 4 --text "- Checking audit configuration file" --result OK --color GREEN
          else
            logtext "Result: could not find auditd configuration file"
            Display --indent 4 --text "- Checking audit configuration file" --result WARNING --color RED
            ReportSuggestion ${TEST_NO} "Determine the location of auditd configuration file"
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9634
    # Description : Check auditd log file
    if [ ! "${AUDITDBINARY}" = "" -a ${AUDITD_RUNNING} -eq 1 -a ! "${AUDITD_CONF_FILE}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no ACCT-9634 --os Linux --preqs-met ${PREQS_MET} --weight L --network NO --description "Check for auditd log file"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: Checking auditd log file"
        FIND=`grep "^log_file" ${AUDITD_CONF_FILE} | ${AWKBINARY} '{ if ($1=="log_file" && $2=="=") { print $3 } }'`
        if [ ! "${FIND}" = "" ]; then
            logtext "Result: log file is defined"
            logtext "Defined value: ${FIND}"
            if [ -f ${FIND} ]; then
                logtext "Result: log file ${FIND} exists on disk"
                Display --indent 4 --text "- Checking auditd log file" --result FOUND --color GREEN
                report "logfile[]=${FIND}"
              else
                logtext "Result: can't find log file ${FIND} on disk"
                Display --indent 4 --text "- Checking auditd log file" --result SUGGESTION --color YELLOW
                ReportSuggestion ${TEST_NO} "Check auditd log file location"
            fi
          else
            logtext "Result: no log file found"
            Display --indent 4 --text "- Checking auditd log file" --result WARNING --color RED
            ReportWarning ${TEST_NO} "L" "Auditd log file is defined but can not be found on disk"
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9636
    # Description : Check for Snoopy (wrapper for execve() and logger)
    Register --test-no ACCT-9636 --os Linux --weight L --network NO --description "Check for Snoopy wrapper and logger"
    if [ ${SKIPTEST} -eq 0 ]; then
        FILE="/lib/snoopy.so"
        if [ -f ${FILE} ]; then
            logtext "Result: found ${FILE}"
            Display --indent 2 --text "- Checking Snoopy" --result FOUND --color GREEN
            if [ -f /etc/ld.so.preload ]; then
                logtext "Result: found /etc/ld.so.preload, testing if snoopy.so is listed"
                FIND=`grep ${FILE} /etc/ld.so.preload`
                if [ ! "${FIND}" = "" ]; then
                    logtext "Result: found snoopy in ld.so.preload"
                    logtext "Output: ${FIND}"
                    Display --indent 6 --text "- Library in ld.so.preload" --result "LOADED" --color GREEN
                    report "audit_trail_tool[]=snoopy"
                  else
                    Display --indent 6 --text "- Library in ld.so.preload" --result "NOT FOUND" --color YELLOW
                    ReportSuggestion ${TEST_NO} "Snoopy is installed but not loaded via /etc/ld.so.preload"
                    AddHP 3 3
                fi
              else
                logtext "Result: /etc/ld.so.preload does not exist"
                Display --indent 6 --text "- Library in ld.so.preload" --result "UNKNOWN" --color PURPLE
                ReportException "${TEST_NO}:1" "Unsure how Snoopy might be loaded as ld.so.preload does not exist"
            fi
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9650
    # Description : Check Solaris audit daemon presence
    Register --test-no ACCT-9650 --os Solaris --weight L --network NO --description "Check Solaris audit daemon"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: check if audit daemon is running"
        IsRunning auditd
        if [ ${RUNNING} -eq 1 ]; then
            logtext "Result: Solaris audit daemon is running"
            SOLARIS_AUDITD_RUNNING=1
            Display --indent 2 --text "- Checking Solaris audit daemon status" --result RUNNING --color GREEN
          else
            logtext "Result: Solaris audit daemon is not running"
            Display --indent 2 --text "- Checking Solaris audit daemon status" --result "NOT RUNNING" --color YELLOW
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9652
    # Description : Check Solaris auditd service status
    if [ -x /usr/bin/svcs -a ${SOLARIS_AUDITD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no ACCT-9652 --os Solaris --preqs-met ${PREQS_MET} --weight L --network NO --description "Check auditd SMF status"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: check if auditd service is enabled and online"
        FIND=`/usr/bin/svcs svc:/system/auditd:default | grep "^online"`
        if [ ! "${FIND}" = "" ]; then
            logtext "Result: auditd service is online"
            Display --indent 4 --text "- Checking Solaris audit daemon status" --result ONLINE --color GREEN
          else
            Display --indent 4 --text "- Checking Solaris audit daemon status" --result "NOT ONLINE" --color YELLOW
            ReportSuggestion "${TEST_NO}" "Check status of audit daemon"
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9654
    # Description : Check Solaris Basic Security Mode (BSM) in /etc/system
    if [ ${SOLARIS_AUDITD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no ACCT-9654 --os Solaris --preqs-met ${PREQS_MET} --weight L --network NO --description "Check BSM auditing in /etc/system"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: check if BSM is enabled in /etc/system"
        if [ -f /etc/system ]; then
            FIND=`grep 'set c2audit:audit_load = 1' /etc/system`
            if [ ! "${FIND}" = "" ]; then
                logtext "Result: BSM is enabled in /etc/system"
                Display --indent 4 --text "- Checking Solaris BSM (/etc/system)" --result ENABLED --color GREEN
              else
                Display --indent 4 --text "- Checking Solaris BSM (/etc/system)" --result "NOT FOUND" --color YELLOW
            fi
          else
            logtext "Result: /etc/system does not exist"
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9656
    # Description : Check Solaris BSM (c2audit) module status
    if [ ${SOLARIS_AUDITD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no ACCT-9656 --os Solaris --preqs-met ${PREQS_MET} --weight L --network NO --description "Check BSM auditing in module list"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: check if c2audit module is active"
        if [ -x /usr/sbin/modinfo ]; then
            FIND=`/usr/sbin/modinfo | grep c2audit`
            if [ ! "${FIND}" = "" ]; then
                logtext "Result: c2audit found in modinfo output"
                Display --indent 4 --text "- Checking Solaris BSM (modules list)" --result ENABLED --color GREEN
              else
                logtext "Result: c2audit not found in modinfo output"
                Display --indent 4 --text "- Checking Solaris BSM (modules list)" --result "NOT FOUND" --color YELLOW
            fi
          else
            logtext "Result: /usr/sbin/modinfo does not exist, skipping test"
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9662
    # Description : Check location for audit events
    if [ ${SOLARIS_AUDITD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no ACCT-9660 --os Solaris --preqs-met ${PREQS_MET} --weight L --network NO --description "Check location of audit events"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: check /etc/security/audit_control for event logging location"
        if [ -f /etc/security/audit_control ]; then
            logtext "Result: file /etc/security/audit_control found"
            FIND=`grep "^dir" /etc/security/audit_control | ${AWKBINARY} -F: '{ print $2 }'`
            if [ ! "${FIND}" = "" ]; then
                logtext "Result: found location ${FIND}"
                logtext "Test: Checking if location is a valid directory"
                if [ -d ${FIND} ]; then
                    logtext "Result: location ${FIND} is valid"
                    Display --indent 4 --text "- Checking Solaris audit location" --result FOUND --color GREEN
                  else
                    logtext "Result: location ${FIND} does not exist"
                    # YYY perform manual audit
                    Display --indent 4 --text "- Checking Solaris audit location" --result UNKNOWN --color YELLOW
                fi
              else
                logtext "Result: unknown event location"
                Display --indent 4 --text "- Checking Solaris audit location" --result UNKNOWN --color YELLOW
            fi
          else
            logtext "Result: could not find /etc/security/audit_control"
            Display --indent 4 --text "- Checking Solaris audit location" --result SKIPPED --color YELLOW
        fi
    fi
#
#################################################################################
#
    # Test        : ACCT-9672
    # Description : check auditstat
    if [ ${SOLARIS_AUDITD_RUNNING} -eq 1 ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
    Register --test-no ACCT-9662 --os Solaris --preqs-met ${PREQS_MET} --weight L --network NO --description "Check Solaris auditing stats"
    if [ ${SKIPTEST} -eq 0 ]; then
        logtext "Test: Check auditing statistics"
        if [ -x /usr/sbin/auditstat ]; then
            FIND=`/usr/sbin/auditstat | tr -s ' ' ','`
            for I in ${FIND}; do
                logtext "Output: ${I}"
            done
            Display --indent 4 --text "- Checking Solaris audit statistics" --result DONE --color GREEN
          else
            logtext "Result: /usr/sbin/auditstat not found, skipping test"
            Display --indent 4 --text "- Checking Solaris audit statistics" --result SKIPPED --color YELLOW
        fi
    fi
#
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#

wait_for_keypress

#
#================================================================================
# Lynis - Copyright 2007-2015, Michael Boelen / CISOfy - https://cisofy.com