mirror of
https://github.com/CISOfy/lynis.git
synced 2025-09-20 00:17:46 +02:00
b595cc0fb5
* Typo fix. * Style change: always use $(), never ``. The Lynis code already mostly used $(), but backticks were sprinkled around. Converted all of them. * Lots of minor spelling/typo fixes. FWIW these were found with: find . -type f -print0 | xargs -0 cat | aspell list | sort -u | egrep '^[a-z]+$' | less And then reviewing the list to pick out things that looked like misspelled words as opposed to variables, etc., and then manual inspection of context to determine the intention.
396 lines
20 KiB
Bash
396 lines
20 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 2007-2017, 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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# Databases
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#
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#################################################################################
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#
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# Paths to DATADIR
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sMYSQLDBPATHS="${ROOTDIR}var/lib/mysql"
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# Paths to my.cnf
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sMYCNFLOCS="${ROOTDIR}etc/mysql/my.cnf ${ROOTDIR}usr/etc/my.cnf"
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REDIS_CONFIGURATION_FILES=""
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REDIS_CONFIGURATION_FOUND=0
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#
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#################################################################################
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#
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InsertSection "Databases"
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# Test : DBS-1804
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# Description : Check if MySQL is being used
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Register --test-no DBS-1804 --weight L --network NO --category security --description "Checking active MySQL process"
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if [ ${SKIPTEST} -eq 0 ]; then
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FIND=$(${PSBINARY} ax | ${EGREPBINARY} "mysqld|mysqld_safe" | ${GREPBINARY} -v "grep")
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if [ "${FIND}" = "" ]; then
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if [ ${DEBUG} -eq 1 ]; then Display --indent 2 --text "- MySQL process status" --result "${STATUS_NOT_FOUND}" --color WHITE --debug; fi
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LogText "Result: MySQL process not active"
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else
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Display --indent 2 --text "- MySQL process status" --result "${STATUS_FOUND}" --color GREEN
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LogText "Result: MySQL is active"
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MYSQL_RUNNING=1
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DATABASE_ENGINE_RUNNING=1
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Report "mysql_running=${MYSQL_RUNNING}"
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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 : DBS-1808
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# Description : Check MySQL data directory
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#Register --test-no DBS-1808 --weight L --network NO --category security --description "Checking MySQL data directory"
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#if [ ${SKIPTEST} -eq 0 ]; then
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#fi
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#
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#################################################################################
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#
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# Test : DBS-1812
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# Description : Check data directory permissions
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#Register --test-no DBS-1812 --weight L --network NO --category security --description "Checking MySQL data directory permissions"
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#if [ ${SKIPTEST} -eq 0 ]; then
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#fi
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#
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#################################################################################
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#
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# Test : DBS-1816
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# Description : Check empty MySQL root password
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# Notes : Only perform test when MySQL is running and client is available
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if [ ! -z "${MYSQLCLIENTBINARY}" -a ${MYSQL_RUNNING} -eq 1 ]; then PREQS_MET="YES"; SKIPREASON=""; else PREQS_MET="NO"; SKIPREASON="MySQL not installed, or not running"; fi
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Register --test-no DBS-1816 --preqs-met ${PREQS_MET} --skip-reason "${SKIPREASON}" --weight L --network NO --category security --description "Checking MySQL root password"
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if [ ${SKIPTEST} -eq 0 ]; then
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LogText "Test: Trying to login to local MySQL server without password"
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FIND=$(${MYSQLCLIENTBINARY} -u root --password= --silent --batch --execute="" 2> /dev/null; echo $?)
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if [ "${FIND}" = "0" ]; then
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LogText "Result: Login succeeded, no MySQL root password set!"
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ReportWarning ${TEST_NO} "No MySQL root password set"
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Display --indent 4 --text "- Checking empty MySQL root password" --result "${STATUS_WARNING}" --color RED
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AddHP 0 5
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else
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LogText "Result: Login did not succeed, so a MySQL root password is set"
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if IsVerbose; then Display --indent 4 --text "- Checking MySQL root password" --result "${STATUS_OK}" --color GREEN; fi
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AddHP 2 2
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fi
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else
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LogText "Test skipped, MySQL daemon not running or no MySQL client available"
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fi
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#
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#################################################################################
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#
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# Test : DBS-1818
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# Description : Check MongoDB status
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Register --test-no DBS-1818 --weight L --network NO --category security --description "Check status of MongoDB server"
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if [ ${SKIPTEST} -eq 0 ]; then
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if IsRunning "mongod"; then
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MONGODB_RUNNING=1
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DATABASE_ENGINE_RUNNING=1
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Report "mongodb_running=1"
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Display --indent 2 --text "- MongoDB status" --result "${STATUS_FOUND}" --color GREEN
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fi
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fi
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# Test : DBS-1820
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# Description : Check empty MongoDB authorization
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# Notes : Authentication can be set via command line or configuration file
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Register --test-no DBS-1820 --weight L --network NO --category security --description "Check for authorization in MongoDB"
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if [ ${SKIPTEST} -eq 0 ]; then
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MONGODB_AUTHORIZATION_ENABLED=0
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if [ ${MONGODB_RUNNING} -eq 1 ]; then
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MONGO_CONF_FILES="${ROOTDIR}etc/mongod.conf ${ROOTDIR}etc/mongodb.conf"
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for FILE in ${MONGO_CONF_FILES}; do
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if [ -f ${FILE} ]; then
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LogText "Result: found MongoDB configuration file (${FILE})"
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LogText "Test: determine authorization setting in new style YAML format"
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AUTH_IN_CONFIG=$(${GREPBINARY} "authorization: enabled" ${FILE} | ${GREPBINARY} -E -v "(^#|#auth)")
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if [ ! -z "${AUTH_IN_CONFIG}" ]; then
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LogText "Result: GOOD, found authorization option enabled in configuration file (YAML format)"
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MONGODB_AUTHORIZATION_ENABLED=1
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else
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LogText "Result: did NOT find authorization option enabled in configuration file (with YAML format)"
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LogText "Test: now searching for old style configuration (auth = true) in configuration file"
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AUTH_IN_CONFIG=$(${GREPBINARY} "auth = true" ${FILE} | ${GREPBINARY} -v "noauth" | ${GREPBINARY} -E -v "(^#|#auth)")
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if [ -z "${AUTH_IN_CONFIG}" ]; then
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LogText "Result: did NOT find auth = true in configuration file"
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else
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LogText "Result: GOOD, found authorization option enabled in configuration file (old format)"
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MONGODB_AUTHORIZATION_ENABLED=1
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fi
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fi
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else
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LogText "Result: configuration file ${FILE} not found"
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fi
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done
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# Now check authorization on the command line
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if [ ${MONGODB_AUTHORIZATION_ENABLED} -eq 0 ]; then
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if [ ! -z "${PGREPBINARY}" ]; then
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AUTH_ON_CMDLINE=$(for I in $(${PGREPBINARY} mongo); do cat /proc/${I}/cmdline | xargs -0 echo | ${GREPBINARY} -E "\-\-auth( |$)"; done)
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if [ ! -z "${AUTH_ON_CMDLINE}" ]; then LogText "Result: found authorization enabled via mongod parameter"; MONGODB_AUTHORIZATION_ENABLED=1; fi
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else
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LogText "Result: skipped this part of the test, as pgrep is not available"
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fi
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fi
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if [ ${MONGODB_AUTHORIZATION_ENABLED} -eq 0 ]; then
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LogText "Result: no authorization enabled via parameter or configuration file"
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Report "mongodb_authorization_disabled=1"
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ReportWarning ${TEST_NO} "MongoDB instance allows any user to access databases"
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Display --indent 4 --text "- Checking MongoDB authorization" --result "${STATUS_DISABLED}" --color RED
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else
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if IsVerbose; then Display --indent 4 --text "- Checking MongoDB authorization" --result "${STATUS_ENABLED}" --color GREEN; fi
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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 : DBS-1826
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# Description : Check if PostgreSQL is being used
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Register --test-no DBS-1826 --weight L --network NO --category security --description "Checking active PostgreSQL processes"
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if [ ${SKIPTEST} -eq 0 ]; then
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if IsRunning "postgres:"; then
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Display --indent 2 --text "- PostgreSQL processes status" --result "${STATUS_FOUND}" --color GREEN
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LogText "Result: PostgreSQL is active"
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POSTGRESQL_RUNNING=1
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DATABASE_ENGINE_RUNNING=1
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Report "postgresql_running=${POSTGRESQL_RUNNING}"
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else
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if [ ${DEBUG} -eq 1 ]; then Display --indent 2 --text "- PostgreSQL processes status" --result "${STATUS_NOT_FOUND}" --color WHITE --debug; fi
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LogText "Result: PostgreSQL process not active"
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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 : DBS-1840
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# Description : Check if Oracle is being used
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# Notes : tnslsnr: Oracle listener
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# pmon: process monitor
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# smon: system monitor
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# dbwr: database writer
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# lgwr: log writer
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# arch: archiver (optional)
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# ckpt: checkpoint (optional)
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# reco: recovery (optional)
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Register --test-no DBS-1840 --weight L --network NO --category security --description "Checking active Oracle processes"
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if [ ${SKIPTEST} -eq 0 ]; then
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FIND=$(${PSBINARY} ax | ${EGREPBINARY} "ora_pmon|ora_smon|tnslsnr" | ${GREPBINARY} -v "grep")
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if [ "${FIND}" = "" ]; then
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if [ ${DEBUG} -eq 1 ]; then Display --indent 2 --text "- Oracle processes status" --result "${STATUS_NOT_FOUND}" --color WHITE --debug; fi
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LogText "Result: Oracle process(es) not active"
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else
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Display --indent 2 --text "- Oracle processes status" --result "${STATUS_FOUND}" --color GREEN
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LogText "Result: Oracle is active"
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ORACLE_RUNNING=1
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DATABASE_ENGINE_RUNNING=1
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Report "oracle_running=${ORACLE_RUNNING}"
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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 : DBS-1842
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# Description : Check Oracle home paths from oratab
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#Register --test-no DBS-1842 --weight L --network NO --category security --description "Checking Oracle home paths"
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#if [ ${SKIPTEST} -eq 0 ]; then
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# if [ -f /etc/oratab ]; then
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# FIND=$(${GREPBINARY} -v "#" /etc/oratab | ${AWKBINARY} -F: "{ print $2 }")
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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 : DBS-1860
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# Description : Checks if a DB2 instance is currently runnigng
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Register --test-no DBS-1860 --weight L --network NO --category security --description "Checking active DB2 instances"
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if [ ${SKIPTEST} -eq 0 ]; then
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if IsRunning db2sysc; then
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Display --indent 2 --text "- DB2 instance running" --result "${STATUS_FOUND}" --color GREEN
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LogText "Result: At least one DB2 instance is running"
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DB2_RUNNING=1
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DATABASE_ENGINE_RUNNING=1
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Report "db2_running=${DB2_RUNNING}"
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else
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if [ ${DEBUG} -eq 1 ]; then Display --indent 2 --text "- DB2 instance running" --result "${STATUS_NOT_FOUND}" --color WHITE --debug; fi
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LogText "Result: No DB2 instances are running"
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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 : DBS-1880
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# Description : Determine if redis is running
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Register --test-no DBS-1880 --weight L --network NO --category security --description "Check for active Redis server"
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if [ ${SKIPTEST} -eq 0 ]; then
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if IsRunning redis-server; then
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Display --indent 2 --text "- Redis (server) status" --result "${STATUS_FOUND}" --color GREEN
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LogText "Result: Redis is running"
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REDIS_RUNNING=1
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DATABASE_ENGINE_RUNNING=1
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Report "redis_server_running=${REDIS_RUNNING}"
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else
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if [ ${DEBUG} -eq 1 ]; then Display --indent 2 --text "- Redis (server) status" --result "${STATUS_NOT_FOUND}" --color WHITE --debug; fi
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LogText "Result: No Redis processes are running"
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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 : DBS-1882
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# Description : Determine Redis configuration
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if [ ${REDIS_RUNNING} -eq 1 ]; then PREQS_METS="YES"; else PREQS_MET="NO"; SKIPREASON="Redis not running"; fi
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Register --test-no DBS-1882 --weight L --network NO --preqs-met "${PREQS_MET}" --skip-reason "${SKIPREASON}" --category security --description "Redis configuration file"
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if [ ${SKIPTEST} -eq 0 ]; then
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PATHS="${ROOTDIR}etc/redis ${ROOTDIR}usr/local/etc/redis"
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FOUND=0
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for DIR in ${PATHS}; do
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LogText "Action: scanning directory (${DIR}) for Redis configuration files"
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FILES=$(${LSBINARY} ${DIR}/*.conf 2> /dev/null)
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if [ ! -z "${FILES}" ]; then
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for CONFFILE in ${FILES}; do
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if FileIsReadable ${CONFFILE}; then
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LogText "Action: checking if ${CONFFILE} is a Sentinel configuration file"
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# Exclude Sentinel configuration file
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FIND=$(${GREPBINARY} "^sentinel " ${CONFFILE})
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if [ ! -z "${FIND}" ]; then
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LogText "Result: file is a Sentinel configuration file, skipping it"
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else
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LogText "Result: file is NOT a Sentinel configuration file. Now scanning if it is a Redis configuration file"
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FIND=$(${GREPBINARY} "Redis" ${CONFFILE})
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if [ ! -z "${FIND}" ]; then
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REDIS_CONFIGURATION_FILES="${REDIS_CONFIGURATION_FILES} ${CONFFILE}"
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REDIS_CONFIGURATION_FOUND=1
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LogText "Result: found a Redis configuration file (${CONFFILE})"
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else
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LogText "Result: this file does not look like a Redis file (${CONFFILE})"
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fi
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fi
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else
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LogText "Could not read this file, so skipping it"
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fi
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done
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else
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LogText "Result: no configuration files found in this directory"
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fi
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done
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# Sort the list of discovered configuration files so we can make them unique
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REDIS_CONFIGURATION_FILES=$(echo ${REDIS_CONFIGURATION_FILES} | ${SEDBINARY} 's/^ //' | ${TRBINARY} ' ' '\n' | ${SORTBINARY} | ${UNIQBINARY} | ${TRBINARY} '\n' ' ')
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for FILE in ${REDIS_CONFIGURATION_FILES}; do
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if IsWorldReadable ${FILE}; then
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LogText "Result: configuration file ${FILE} is world readable, this might leak sensitive information!"
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ReportWarning "${TEST_NO}" "Redis configuration file ${FILE} is world readable and might leak sensitive details" "${FILE}" "Use chmod 640 to change file permissions"
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else
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LogText "Result: great, configuration file ${FILE} is not world readable"
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fi
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done
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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
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fi
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#
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#################################################################################
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#
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# Test : DBS-1884
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# Description : Determine Redis configuration option: requirepass
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if [ ${REDIS_RUNNING} -eq 1 -a ${REDIS_CONFIGURATION_FOUND} -eq 1 ]; then PREQS_METS="YES"; else PREQS_MET="NO"; SKIPREASON="Redis not running, or no configuration file found"; fi
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Register --test-no DBS-1884 --weight L --network NO --preqs-met "${PREQS_MET}" --skip-reason "${SKIPREASON}" --category security --description "Redis: requirepass option configured"
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if [ ${SKIPTEST} -eq 0 ]; then
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for FILE in ${REDIS_CONFIGURATION_FILES}; do
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if FileIsReadable ${FILE}; then
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if SearchItem "^requirepass" "${FILE}" "--sensitive"; then
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LogText "Result: found 'requirepass' configured"
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AddHP 3 3
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Display --indent 4 --text "- Redis (requirepass configured)" --result "${STATUS_FOUND}" --color GREEN
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Report "redis_requirepass=1"
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else
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AddHP 0 3
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Display --indent 4 --text "- Redis (requirepass configured)" --result "${STATUS_NOT_FOUND}" --color YELLOW
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ReportSuggestion "${TEST_NO}" "Configure the 'requirepass' setting for Redis" "${FILE}" "text:configure 'requirepass' setting in ${FILE}"
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Report "redis_requirepass=0"
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fi
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else
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LogText "Result: test skipped, as we can't read configuration file"
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fi
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done
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fi
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#
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#################################################################################
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#
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# Test : DBS-1886
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# Description : Determine Redis configuration option: rename-command CONFIG
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if [ ${REDIS_RUNNING} -eq 1 -a ${REDIS_CONFIGURATION_FOUND} -eq 1 ]; then PREQS_METS="YES"; else PREQS_MET="NO"; SKIPREASON="Redis not running, or no configuration found"; fi
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Register --test-no DBS-1886 --weight L --network NO --preqs-met "${PREQS_MET}" --skip-reason "${SKIPREASON}" --category security --description "Redis: rename-command CONFIG used"
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if [ ${SKIPTEST} -eq 0 ]; then
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for FILE in ${REDIS_CONFIGURATION_FILES}; do
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if FileIsReadable ${FILE}; then
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if SearchItem "^rename-command CONFIG" "${FILE}" "--sensitive"; then
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LogText "Result: found 'rename-command CONFIG' configured"
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AddHP 3 3
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Display --indent 4 --text "- Redis (rename of CONFIG command)" --result "${STATUS_FOUND}" --color GREEN
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Report "redis_rename_command_config=1"
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else
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AddHP 0 3
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Display --indent 4 --text "- Redis (rename of CONFIG command)" --result "${STATUS_NOT_FOUND}" --color YELLOW
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ReportSuggestion "${TEST_NO}" "Use the 'rename-command CONFIG' setting for Redis" "${FILE}" "text:configure 'rename-command CONFIG' in ${FILE}"
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Report "redis_rename_command_config=0"
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fi
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else
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LogText "Result: test skipped, as we can't read configuration file"
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fi
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done
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fi
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#
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#################################################################################
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#
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# Test : DBS-1888
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# Description : Determine Redis configuration option: bind on localhost
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if [ ${REDIS_RUNNING} -eq 1 -a ${REDIS_CONFIGURATION_FOUND} -eq 1 ]; then PREQS_METS="YES"; else PREQS_MET="NO"; SKIPREASON="Redis not running, or no configuration found"; fi
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Register --test-no DBS-1888 --weight L --network NO --preqs-met "${PREQS_MET}" --skip-reason "${SKIPREASON}" --category security --description "Redis: bind on localhost"
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if [ ${SKIPTEST} -eq 0 ]; then
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for FILE in ${REDIS_CONFIGURATION_FILES}; do
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if FileIsReadable ${FILE}; then
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if SearchItem "^bind (localhost|127\.)" "${FILE}" "--sensitive"; then
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LogText "Result: found 'bind on localhost' configured"
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AddHP 3 3
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Display --indent 4 --text "- Redis (bind on localhost)" --result "${STATUS_FOUND}" --color GREEN
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Report "redis_bind_localhost=1"
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else
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AddHP 0 3
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Display --indent 4 --text "- Redis (bind on localhost)" --result "${STATUS_NOT_FOUND}" --color YELLOW
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ReportSuggestion "${TEST_NO}" "Use 'bind' setting to listen on localhost for Redis instance" "${FILE}" "text:configure 'bind localhost' in ${FILE}"
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Report "redis_bind_localhost=0"
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fi
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else
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LogText "Result: test skipped, as we can't read configuration file"
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fi
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done
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fi
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#
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#################################################################################
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#
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if [ ${DATABASE_ENGINE_RUNNING} -eq 0 ]; then
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Display --indent 4 --text "No database engines found"
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fi
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#
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#################################################################################
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#
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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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