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lynis/include/tests_mail_messaging

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#!/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.
#
#################################################################################
#
# E-mail and messaging
#
#################################################################################
#
InsertSection "Software: e-mail and messaging"
#
#################################################################################
#
DOVECOT_RUNNING=0
EXIM_RUNNING=0
SMTP_DAEMON=""
POSTFIX_RUNNING=0
QMAIL_RUNNING=0
SENDMAIL_RUNNING=0
OPENSMTPD_RUNNING=0
#
#################################################################################
#
# Test : MAIL-8802
# Description : Check Exim process status
Register --test-no MAIL-8802 --weight L --network NO --description "Check Exim status"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: check Exim status"
IsRunning exim
if [ ${RUNNING} -eq 1 ]; then
LogText "Result: found running Exim process"
Display --indent 2 --text "- Checking Exim status" --result RUNNING --color GREEN
EXIM_RUNNING=1
SMTP_DAEMON="exim"
else
LogText "Result: no running Exim processes found"
Display --indent 2 --text "- Checking Exim status" --result "NOT FOUND" --color WHITE
fi
fi
#
#################################################################################
#
# Test : MAIL-8814
# Description : Check Postfix process
# Notes : qmgr and pickup run under postfix uid, without full path to binary
Register --test-no MAIL-8814 --weight L --network NO --description "Check postfix process status"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: check Postfix status"
# Some other processes also use master, therefore it should include both master and postfix
FIND1=`${PSBINARY} ax | grep "master" | grep "postfix" | grep -v "grep"`
#FIND2=`${PSBINARY} ax | grep "qmgr" | grep "postfix" | grep -v "grep"`
#FIND3=`${PSBINARY} ax | grep "pickup" | grep "postfix" | grep -v "grep"`
if [ ! "${FIND1}" = "" ]; then
LogText "Result: found running Postfix process"
Display --indent 2 --text "- Checking Postfix status" --result RUNNING --color GREEN
POSTFIX_RUNNING=1
SMTP_DAEMON="postfix"
else
LogText "Result: no running Postfix processes found"
Display --indent 2 --text "- Checking Postfix status" --result "NOT FOUND" --color WHITE
fi
fi
#
#################################################################################
#
# Test : MAIL-8816
# Description : Check Postfix configuration
if [ ${POSTFIX_RUNNING} -eq 1 -a ! "${POSTFIXBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no MAIL-8816 --preqs-met ${PREQS_MET} --weight L --network NO --description "Check Postfix configuration"
if [ ${SKIPTEST} -eq 0 ]; then
Display --indent 2 --text "- Checking Postfix configuration" --result FOUND --color GREEN
POSTFIX_CONFIGDIR=`${POSTCONFBINARY} 2> /dev/null | grep '^config_directory' | awk '{ print $3 }'`
POSTFIX_CONFIGFILE="${POSTFIX_CONFIGDIR}/main.cf"
LogText "Postfix configuration directory: ${POSTFIX_CONFIGDIR}"
LogText "Postfix configuration file: ${POSTFIX_CONFIGFILE}"
fi
#
#################################################################################
#
# Test : MAIL-8818
# Description : Check Postfix configuration
if [ ${POSTFIX_RUNNING} -eq 1 -a ! "${POSTFIXBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no MAIL-8818 --preqs-met ${PREQS_MET} --weight L --network NO --description "Check Postfix configuration: banner"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: Checking Postfix banner"
FIND1=`${POSTCONFBINARY} 2> /dev/null | grep '^smtpd_banner' | grep 'postfix'`
FIND2=`${POSTCONFBINARY} 2> /dev/null | grep '^smtpd_banner' | grep '$mail_name'`
FIND3=`${POSTCONFBINARY} 2> /dev/null | grep '^mail_name' | grep -i 'postfix'`
#YYY Check if OS name shows up in banner
#FIND4=`${POSTCONFBINARY} 2> /dev/null | grep '^smtpd_banner' | egrep "${OS}|${LINUX_VERSION}`
SHOWWARNING=0
if [ ! "${FIND1}" = "" ]; then
SHOWWARNING=1
else
if [ ! "${FIND2}" = "" -a ! "${FIND3}" = "" ]; then
SHOWWARNING=1
else
Display --indent 4 --text "- Checking Postfix banner" --result OK --color GREEN
fi
fi
if [ ${SHOWWARNING} -eq 1 ]; then
Display --indent 4 --text "- Checking Postfix banner" --result WARNING --color RED
LogText "Result: found mail_name in SMTP banner, and/or mail_name contains 'Postfix'."
ReportWarning ${TEST_NO} "L" "Found mail_name in SMTP banner, and/or mail_name contains 'Postfix'"
ReportSuggestion ${TEST_NO} "You are advised to hide the mail_name (option: smtpd_banner) from your postfix configuration. Use postconf -e or change your main.cf file (${POSTFIX_CONFIGFILE})"
fi
fi
#
#################################################################################
#
# Test : MAIL-8838
# Description : Check Dovecot process
Register --test-no MAIL-8838 --weight L --network NO --description "Check dovecot process"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: check dovecot status"
IsRunning dovecot
if [ ${RUNNING} -eq 1 ]; then
LogText "Result: found running dovecot process"
Display --indent 2 --text "- Checking Dovecot status" --result RUNNING --color GREEN
DOVECOT_RUNNING=1
IMAP_DAEMON="dovecot"
POP3_DAEMON="dovecot"
else
LogText "Result: dovecot not found"
Display --indent 2 --text "- Checking Dovecot status" --result "NOT FOUND" --color WHITE
fi
fi
#
#################################################################################
#
# Test : MAIL-8860
# Description : Check Qmail process status
Register --test-no MAIL-8860 --weight L --network NO --description "Check Qmail status"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: check Qmail status"
IsRunning qmail-smtpd
if [ ${RUNNING} -eq 1 ]; then
LogText "Result: found running Qmail process"
Display --indent 2 --text "- Checking Qmail status" --result RUNNING --color GREEN
QMAIL_RUNNING=1
SMTP_DAEMON="qmail"
else
LogText "Result: no running Qmail processes found"
Display --indent 2 --text "- Checking Qmail status" --result "NOT FOUND" --color WHITE
fi
fi
#
#################################################################################
#
# Test : MAIL-8880
# Description : Check Sendmail process status
Register --test-no MAIL-8880 --weight L --network NO --description "Check Sendmail status"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: check sendmail status"
IsRunning sendmail
if [ ${RUNNING} -eq 1 ]; then
LogText "Result: found running Sendmail process"
Display --indent 2 --text "- Checking Sendmail status" --result RUNNING --color GREEN
SENDMAIL_RUNNING=1
SMTP_DAEMON="sendmail"
else
LogText "Result: no running Sendmail processes found"
Display --indent 2 --text "- Checking Sendmail status" --result "NOT FOUND" --color WHITE
fi
fi
#
#################################################################################
#
# Test : MAIL-8920
# Description : Check OpenSMTPD process status
if [ ! "${SMTPCTLBINARY}" = "" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no MAIL-8920 --preqs-met ${PREQS_MET} --weight L --network NO --description "Check OpenSMTPD status"
if [ ${SKIPTEST} -eq 0 ]; then
LogText "Test: check smtpd status"
FIND=`${PSBINARY} ax | egrep "(/smtpd|smtpd: \[priv\]|smtpd: smtp)" | grep -v "grep"`
if [ ! "${FIND}" = "" ]; then
LogText "Result: found running smtpd process"
Display --indent 2 --text "- Checking OpenSMTPD status" --result RUNNING --color GREEN
OPENSMTPD_RUNNING=1
SMTP_DAEMON="opensmtpd"
else
LogText "Result: smtpd not found"
Display --indent 2 --text "- Checking OpenSMTPD status" --result "NOT FOUND" --color WHITE
fi
fi
#
#################################################################################
#
Report "imap_daemon=${IMAP_DAEMON}"
Report "pop3_daemon=${POP3_DAEMON}"
Report "smtp_daemon=${SMTP_DAEMON}"
wait_for_keypress
#
#================================================================================
# Lynis - Security Auditing and System Hardening for Linux and UNIX - https://cisofy.com
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