lynis/include/tests_databases

#!/bin/sh

#################################################################################
#
#   Lynis
# ------------------
#
# Copyright 2007-2013, Michael Boelen
# Copyright 2013-2016, 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.
#
#################################################################################
#
# Databases
#
#################################################################################
#
    # Paths to DATADIR
    sMYSQLDBPATHS="/var/lib/mysql"
    # Paths to my.cnf
    sMYCNFLOCS="/etc/mysql/my.cnf /usr/etc/my.cnf"
    REDIS_CONFIGURATION_FILES=""
    REDIS_CONFIGURATION_FOUND=0
#
#################################################################################
#
    InsertSection "Databases"

    # Test        : DBS-1804
    # Description : Check if MySQL is being used
    Register --test-no DBS-1804 --weight L --network NO --category security --description "Checking active MySQL process"
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=`${PSBINARY} ax | ${EGREPBINARY} "mysqld|mysqld_safe" | ${GREPBINARY} -v "grep"`
        if [ "${FIND}" = "" ]; then
            if [ ${DEBUG} -eq 1 ]; then Display --indent 2 --text "- MySQL process status" --result "${STATUS_NOT_FOUND}" --color WHITE --debug; fi
            LogText "Result: MySQL process not active"
          else
            Display --indent 2 --text "- MySQL process status" --result "${STATUS_FOUND}" --color GREEN
            LogText "Result: MySQL is active"
            MYSQL_RUNNING=1
            DATABASE_ENGINE_RUNNING=1
            Report "mysql_running=${MYSQL_RUNNING}"
        fi
    fi
#
#################################################################################
#
    # Test        : DBS-1808
    # Description : Check MySQL data directory
    #Register --test-no DBS-1808 --weight L --network NO --category security --description "Checking MySQL data directory"
    #if [ ${SKIPTEST} -eq 0 ]; then
    #fi
#
#################################################################################
#
    # Test        : DBS-1812
    # Description : Check data directory permissions
    #Register --test-no DBS-1812 --weight L --network NO --category security --description "Checking MySQL data directory permissions"
    #if [ ${SKIPTEST} -eq 0 ]; then
    #fi
#
#################################################################################
#
    # Test        : DBS-1816
    # Description : Check empty MySQL root password
    # Notes       : Only perform test when MySQL is running and client is available
    if [ ! "${MYSQLCLIENTBINARY}" = "" -a ${MYSQL_RUNNING} -eq 1 ]; then PREQS_MET="YES"; SKIPREASON=""; else PREQS_MET="NO"; SKIPREASON="MySQL not installed, or not running"; fi
    Register --test-no DBS-1816 --preqs-met ${PREQS_MET} --skip-reason "${SKIPREASON}" --weight L --network NO --category security --description "Checking MySQL root password"
    if [ ${SKIPTEST} -eq 0 ]; then
        LogText "Test: Trying to login to local MySQL server without password"
        FIND=`${MYSQLCLIENTBINARY} -u root --password= --silent --batch --execute="" 2> /dev/null; echo $?`
        if [ "${FIND}" = "0" ]; then
            LogText "Result: Login succeeded, no MySQL root password set!"
            ReportWarning ${TEST_NO} "No MySQL root password set"
            Display --indent 4 --text "- Checking empty MySQL root password" --result "${STATUS_WARNING}" --color RED
            AddHP 0 5
          else
            LogText "Result: Login did not succeed, so a MySQL root password is set"
            Display --indent 4 --text "- Checking MySQL root password" --result "${STATUS_OK}" --color GREEN
            AddHP 2 2
        fi
      else
        LogText "Test skipped, MySQL daemon not running or no MySQL client available"
    fi
#
#################################################################################
#
    # Test        : DBS-1826
    # Description : Check if PostgreSQL is being used
    Register --test-no DBS-1826 --weight L --network NO --category security --description "Checking active PostgreSQL processes"
    if [ ${SKIPTEST} -eq 0 ]; then
        if IsRunning "postgres:"; then
            Display --indent 2 --text "- PostgreSQL processes status" --result "${STATUS_FOUND}" --color GREEN
            LogText "Result: PostgreSQL is active"
            POSTGRESQL_RUNNING=1
            DATABASE_ENGINE_RUNNING=1
            Report "postgresql_running=${POSTGRESQL_RUNNING}"
          else
            if [ ${DEBUG} -eq 1 ]; then Display --indent 2 --text "- PostgreSQL processes status" --result "${STATUS_NOT_FOUND}" --color WHITE --debug; fi
            LogText "Result: PostgreSQL process not active"
        fi
    fi
#
#################################################################################
#
    # Test        : DBS-1840
    # Description : Check if Oracle is being used
    # Notes       : tnslsnr: Oracle listener
    #               pmon: process monitor
    #               smon: system monitor
    #               dbwr: database writer
    #               lgwr: log writer
    #               arch: archiver (optional)
    #               ckpt: checkpoint (optional)
    #               reco: recovery (optional)
    Register --test-no DBS-1840 --weight L --network NO --category security --description "Checking active Oracle processes"
    if [ ${SKIPTEST} -eq 0 ]; then
        FIND=`${PSBINARY} ax | ${EGREPBINARY} "ora_pmon|ora_smon|tnslsnr" | ${GREPBINARY} -v "grep"`
        if [ "${FIND}" = "" ]; then
            if [ ${DEBUG} -eq 1 ]; then Display --indent 2 --text "- Oracle processes status" --result "${STATUS_NOT_FOUND}" --color WHITE --debug; fi
            LogText "Result: Oracle process(es) not active"
          else
            Display --indent 2 --text "- Oracle processes status" --result "${STATUS_FOUND}" --color GREEN
            LogText "Result: Oracle is active"
            ORACLE_RUNNING=1
            DATABASE_ENGINE_RUNNING=1
            Report "oracle_running=${ORACLE_RUNNING}"
        fi
    fi
#
#################################################################################
#
    # Test        : DBS-1842
    # Description : Check Oracle home paths from oratab
    #Register --test-no DBS-1842 --weight L --network NO --category security --description "Checking Oracle home paths"
    #if [ ${SKIPTEST} -eq 0 ]; then
    # if [ -f /etc/oratab ]; then
    #  FIND=`${GREPBINARY} -v "#" /etc/oratab | ${AWKBINARY} -F: "{ print $2 }"`
    # fi
    #fi
#
#################################################################################
#
    # Test        : DBS-1860
    # Description : Checks if a DB2 instance is currently runnigng
    Register --test-no DBS-1860 --weight L --network NO --category security --description "Checking active DB2 instances"
    if [ ${SKIPTEST} -eq 0 ]; then
        if IsRunning db2sysc; then
            Display --indent 2 --text "- DB2 instance running" --result "${STATUS_FOUND}" --color GREEN
            LogText "Result: At least one DB2 instance is running"
            DB2_RUNNING=1
            DATABASE_ENGINE_RUNNING=1
            Report "db2_running=${DB2_RUNNING}"
          else
            if [ ${DEBUG} -eq 1 ]; then Display --indent 2 --text "- DB2 instance running" --result "${STATUS_NOT_FOUND}" --color WHITE --debug; fi
            LogText "Result: No DB2 instances are running"
        fi
    fi
#
#################################################################################
#
    # Test        : DBS-1880
    # Description : Determine if redis is running
    Register --test-no DBS-1880 --weight L --network NO --category security --description "Check for active Redis server"
    if [ ${SKIPTEST} -eq 0 ]; then
        if IsRunning redis-server; then
            Display --indent 2 --text "- Redis (server) status" --result "${STATUS_FOUND}" --color GREEN
            LogText "Result: Redis is running"
            REDIS_RUNNING=1
            DATABASE_ENGINE_RUNNING=1
            Report "redis_server_running=${REDIS_RUNNING}"
        else
            if [ ${DEBUG} -eq 1 ]; then Display --indent 2 --text "- Redis (server) status" --result "${STATUS_NOT_FOUND}" --color WHITE --debug; fi
            LogText "Result: No Redis processes are running"
        fi
    fi
#
#################################################################################
#
    # Test        : DBS-1882
    # Description : Determine Redis configuration
    if [ ${REDIS_RUNNING} -eq 1 ]; then PREQS_METS="YES"; else PREQS_MET="NO"; SKIPREASON="Redis not running"; fi
    Register --test-no DBS-1882 --weight L --network NO --preqs-met "${PREQS_MET}" --skip-reason "${SKIPREASON}" --category security --description "Redis configuration file"
    if [ ${SKIPTEST} -eq 0 ]; then
        PATHS="${ROOTDIR}etc/redis ${ROOTDIR}usr/local/etc/redis"
        FOUND=0
        for DIR in ${PATHS}; do
            LogText "Action: scanning directory (${DIR}) for Redis configuration files"
            FILES=$(ls ${DIR}/*.conf 2> /dev/null)
            if [ ! -z "${FILES}" ]; then
                for CONFFILE in ${FILES}; do
                    if FileIsReadable ${CONFFILE}; then
                        LogText "Action: checking if ${CONFFILE} is a Sentinel configuration file"
                        # Exclude Sentinel configuration file
                        FIND=$(${GREPBINARY} "^sentinel " ${CONFFILE})
                        if [ ! -z "${FIND}" ]; then
                            LogText "Result: file is a Sentinel configuration file, skipping it"
                        else
                            LogText "Result: file is NOT a Sentinel configuration file. Now scanning if it is a Redis configuration file"
                            FIND=$(${GREPBINARY} "Redis" ${CONFFILE})
                            if [ ! -z "${FIND}" ]; then
                                REDIS_CONFIGURATION_FILES="${REDIS_CONFIGURATION_FILES} ${CONFFILE}"
                                REDIS_CONFIGURATION_FOUND=1
                                LogText "Result: found a Redis configuration file (${CONFFILE})"
                            else
                                LogText "Result: this file does not look like a Redis file  (${CONFFILE})"
                            fi
                        fi
                    else
                        LogText "Could not read this file, so skipping it"
                    fi
                done
            else
                LogText "Result: no configuration files found in this directory"
            fi
        done
        # Sort the list of discovered configuration files so we can make them unique
        REDIS_CONFIGURATION_FILES=$(echo ${REDIS_CONFIGURATION_FILES} | ${SEDBINARY} 's/^ //' | ${TRBINARY} ' ' '\n' | ${SORTBINARY} | uniq | ${TRBINARY} '\n' ' ')
        for FILE in ${REDIS_CONFIGURATION_FILES}; do
            if IsWorldReadable ${FILE}; then
                LogText "Result: configuration file ${FILE} is world readable, this might leak sensitive information!"
                ReportWarning "${TEST_NO}" "Redis configuration file ${FILE} is world readable and might leak sensitive details" "${FILE}" "Use chmod 640 to change file permissions"
            else
                LogText "Result: great, configuration file ${FILE} is not world readable"
            fi
        done
        if [ ${REDIS_CONFIGURATION_FOUND} -eq 0 ]; then ReportException "${TEST_NO}" "Found Redis, but no configuration file. Report this if you know where it is located on your system."; fi
    fi
#
#################################################################################
#
    # Test        : DBS-1884
    # Description : Determine Redis configuration option: requirepass
    if [ ${REDIS_RUNNING} -eq 1 -a ${REDIS_CONFIGURATION_FOUND} -eq 1 ]; then PREQS_METS="YES"; else PREQS_MET="NO"; SKIPREASON="Redis not running, or no configuration file found"; fi
    Register --test-no DBS-1884 --weight L --network NO --preqs-met "${PREQS_MET}" --skip-reason "${SKIPREASON}" --category security --description "Redis: requirepass option configured"
    if [ ${SKIPTEST} -eq 0 ]; then
        for FILE in ${REDIS_CONFIGURATION_FILES}; do
            if FileIsReadable ${FILE}; then
                if SearchItem "^requirepass" "${FILE}" "--sensitive"; then
                    LogText "Result: found 'requirepass' configured"
                    AddHP 3 3
                    Display --indent 4 --text "- Redis (requirepass configured)" --result "${STATUS_FOUND}" --color GREEN
                    Report "redis_requirepass=1"
                else
                    AddHP 0 3
                    Display --indent 4 --text "- Redis (requirepass configured)" --result "${STATUS_NOT_FOUND}" --color YELLOW
                    ReportSuggestion "${TEST_NO}" "Configure the 'requirepass' setting for Redis" "${FILE}" "text:configure 'requirepass' setting in ${FILE}"
                    Report "redis_requirepass=0"
                fi
            else
                LogText "Result: test skipped, as we can't read configuration file"
            fi
        done
    fi
#
#################################################################################
#
    # Test        : DBS-1886
    # Description : Determine Redis configuration option: rename-command CONFIG
    if [ ${REDIS_RUNNING} -eq 1 -a ${REDIS_CONFIGURATION_FOUND} -eq 1 ]; then PREQS_METS="YES"; else PREQS_MET="NO"; SKIPREASON="Redis not running, or no configuration found"; fi
    Register --test-no DBS-1886 --weight L --network NO --preqs-met "${PREQS_MET}" --skip-reason "${SKIPREASON}" --category security --description "Redis: rename-command CONFIG used"
    if [ ${SKIPTEST} -eq 0 ]; then
        for FILE in ${REDIS_CONFIGURATION_FILES}; do
            if FileIsReadable ${FILE}; then
                if SearchItem "^rename-command CONFIG" "${FILE}" "--sensitive"; then
                    LogText "Result: found 'rename-command CONFIG' configured"
                    AddHP 3 3
                    Display --indent 4 --text "- Redis (rename of CONFIG command)" --result "${STATUS_FOUND}" --color GREEN
                    Report "redis_rename_command_config=1"
                else
                    AddHP 0 3
                    Display --indent 4 --text "- Redis (rename of CONFIG command)" --result "${STATUS_NOT_FOUND}" --color YELLOW
                    ReportSuggestion "${TEST_NO}" "Use the 'rename-command CONFIG' setting for Redis" "${FILE}" "text:configure 'rename-command CONFIG' in ${FILE}"
                    Report "redis_rename_command_config=0"
                fi
            else
                LogText "Result: test skipped, as we can't read configuration file"
            fi
        done
    fi
#
#################################################################################
#
    # Test        : DBS-1888
    # Description : Determine Redis configuration option: bind on localhost
    if [ ${REDIS_RUNNING} -eq 1 -a ${REDIS_CONFIGURATION_FOUND} -eq 1 ]; then PREQS_METS="YES"; else PREQS_MET="NO"; SKIPREASON="Redis not running, or no configuration found"; fi
    Register --test-no DBS-1888 --weight L --network NO --preqs-met "${PREQS_MET}" --skip-reason "${SKIPREASON}" --category security --description "Redis: bind on localhost"
    if [ ${SKIPTEST} -eq 0 ]; then
        for FILE in ${REDIS_CONFIGURATION_FILES}; do
            if FileIsReadable ${FILE}; then
                if SearchItem "^bind (localhost|127\.)" "${FILE}" "--sensitive"; then
                    LogText "Result: found 'bind on localhost' configured"
                    AddHP 3 3
                    Display --indent 4 --text "- Redis (bind on localhost)" --result "${STATUS_FOUND}" --color GREEN
                    Report "redis_bind_localhost=1"
                else
                    AddHP 0 3
                    Display --indent 4 --text "- Redis (bind on localhost)" --result "${STATUS_NOT_FOUND}" --color YELLOW
                    ReportSuggestion "${TEST_NO}" "Use 'bind' setting to listen on localhost for Redis instance" "${FILE}" "text:configure 'bind localhost' in ${FILE}"
                    Report "redis_bind_localhost=0"
                fi
            else
                LogText "Result: test skipped, as we can't read configuration file"
            fi
        done
    fi
#
#################################################################################
#
    if [ ${DATABASE_ENGINE_RUNNING} -eq 0 ]; then
        Display --indent 4 --text "No database engines found"
    fi
#
#################################################################################
#

WaitForKeyPress

#
#================================================================================
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