#!/usr/bin/env bash

# Prowler - the handy cloud security tool (copyright 2018) by Toni de la Fuente
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy
# of the License at http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software distributed
# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
# CONDITIONS OF ANY KIND, either express or implied. See the License for the
# specific language governing permissions and limitations under the License.
CHECK_ID_extra724="7.24"
CHECK_TITLE_extra724="[extra724] Check if ACM certificates have Certificate Transparency logging enabled"
CHECK_SCORED_extra724="NOT_SCORED"
CHECK_TYPE_extra724="EXTRA"
CHECK_SEVERITY_extra724="Medium"
CHECK_ASFF_RESOURCE_TYPE_extra724="AwsCertificateManagerCertificate"
CHECK_ALTERNATE_check724="extra724"
CHECK_SERVICENAME_extra724="acm"
CHECK_RISK_extra724='Domain owners can search the log to identify unexpected certificates; whether issued by mistake or malice. Domain owners can also identify Certificate Authorities (CAs) that are improperly issuing certificates.'
CHECK_REMEDIATION_extra724='Make sure you are logging information about Lambda operations. Create a lifecycle and use cases for each trail.'
CHECK_DOC_extra724='https://aws.amazon.com/blogs/security/how-to-get-ready-for-certificate-transparency/'
CHECK_CAF_EPIC_extra724='Logging and Monitoring'

extra724(){
  # "Check if ACM certificates have Certificate Transparency logging enabled "
  for regx in $REGIONS; do
    LIST_OF_CERTS=$($AWSCLI acm list-certificates $PROFILE_OPT  --region $regx --query CertificateSummaryList[].CertificateArn --output text)
    if [[ $LIST_OF_CERTS ]];then
      for cert_arn in $LIST_OF_CERTS;do
        CT_ENABLED=$($AWSCLI acm describe-certificate $PROFILE_OPT --region $regx --certificate-arn $cert_arn --query Certificate.Options.CertificateTransparencyLoggingPreference --output text)
        CERT_DOMAIN_NAME=$(aws acm describe-certificate $PROFILE_OPT --region $regx --certificate-arn $cert_arn --query Certificate.DomainName --output text)
        CERT_TYPE=$(aws acm describe-certificate $PROFILE_OPT --region $regx --certificate-arn $cert_arn --query Certificate.Type --output text)
        if [[ $CERT_TYPE == "IMPORTED" ]];then
          # Ignore imported certificate
          textInfo "$regx: ACM Certificate $CERT_DOMAIN_NAME is imported." "$regx" "$CERT_DOMAIN_NAME"
        else
          if [[ $CT_ENABLED == "ENABLED" ]];then
            textPass "$regx: ACM Certificate $CERT_DOMAIN_NAME has Certificate Transparency logging enabled!" "$regx" "$CERT_DOMAIN_NAME"
          else
            textFail "$regx: ACM Certificate $CERT_DOMAIN_NAME has Certificate Transparency logging disabled!" "$regx" "$CERT_DOMAIN_NAME"
          fi
        fi
      done
    else
       textInfo "$regx: No ACM Certificates found" "$regx"
    fi
  done
}