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#!/bin/sh
#################################################################################
#
# Lynis
# ------------------
#
# Copyright 2007-2013, Michael Boelen
# Copyright 2007-2017, 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.
#
#################################################################################
#
# Cryptography
#
#################################################################################
#
InsertSection "Cryptography"
#
#################################################################################
#
# Test : CRYP-7902
# Description : check for expired SSL certificates
if [ ! -z "${OPENSSLBINARY}" ]; then PREQS_MET="YES"; else PREQS_MET="NO"; fi
Register --test-no CRYP-7902 --preqs-met ${PREQS_MET} --weight L --network NO --category security --description "Check expire date of SSL certificates"
if [ ${SKIPTEST} -eq 0 ]; then
COUNT_TOTAL=0
FOUNDPROBLEM=0
sSSL_PATHS=$(echo ${SSL_CERTIFICATE_PATHS} | ${SEDBINARY} 's/:/ /g')
sSSL_PATHS=$(echo ${sSSL_PATHS} | ${SEDBINARY} 's/^ //' | ${TRBINARY} " " "\n" | ${SORTBINARY} | uniq | ${TRBINARY} "\n" " ")
LogText "Paths to scan: ${sSSL_PATHS}"
for DIR in ${sSSL_PATHS}; do
COUNT_DIR=0
if [ -d ${DIR} ]; then
FileIsReadable ${DIR}
if [ ${CANREAD} -eq 1 ]; then
LogText "Result: found directory ${DIR}"
# Search for CRT files
sFINDCRTS=$(${FINDBINARY} ${DIR} -name "*.crt" -type f -print 2> /dev/null)
if [ ! -z "${sFINDCRTS}" ]; then
for FILE in ${sFINDCRTS}; do
FileIsReadable ${FILE}
if [ ${CANREAD} -eq 1 ]; then
COUNT_DIR=$((COUNT_DIR + 1))
LogText "Test: checking certificate ${FILE}"
# Check certificate where 'end date' has been expired
EXIT_CODE=$(${OPENSSLBINARY} x509 -noout -checkend 0 -in ${FILE} -enddate > /dev/null ; echo $?)
CERT_CN=$(${OPENSSLBINARY} x509 -noout -subject -in ${FILE} 2> /dev/null | ${SEDBINARY} -e 's/^subject.*CN=\([a-zA-Z0-9\.\-\*]*\).*$/\1/')
CERT_NOTAFTER=$(${OPENSSLBINARY} x509 -noout -enddate -in ${FILE} 2> /dev/null | ${AWKBINARY} -F= '{if ($1=="notAfter") { print $2 }}')
Report "certificate[]=${FILE}|${EXIT_CODE}|cn:${CERT_CN};notafter:${CERT_NOTAFTER};|"
if [ "${EXIT_CODE}" = "0" ]; then
LogText "Result: certificate ${FILE} seems to be correct and still valid"
else
FOUNDPROBLEM=1
LogText "Result: certificate ${FILE} has been expired"
fi
else
LogText "Result: can not read file ${FILE} (no permission)"
fi
done
else
LogText "Result: no certificates found in directory ${DIR}"
fi
else
LogText "Result: can not read path ${DIR} (no permission)"
fi
else
LogText "Result: SSL path ${DIR} does not exist"
fi
COUNT_TOTAL=$((COUNT_TOTAL + COUNT_DIR))
LogText "Result: found ${COUNT_DIR} certificates in ${DIR}"
done
Report "certificates=${COUNT_TOTAL}"
LogText "Result: found a total of ${COUNT_TOTAL} certificates"
if [ ${FOUNDPROBLEM} -eq 0 ]; then
Display --indent 2 --text "- Checking for expired SSL certificates" --result "${STATUS_NONE}" --color GREEN
else
Display --indent 2 --text "- Checking for expired SSL certificates" --result "${STATUS_FOUND}" --color RED
ReportSuggestion ${TEST_NO} "Check available certificates for expiration"
fi
fi
#
#################################################################################
#
WaitForKeyPress
#
#================================================================================
# Lynis - Security Auditing and System Hardening for Linux and UNIX - https://cisofy.com
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