#!/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_extra736="7.36"
CHECK_TITLE_extra736="[extra736] Check exposed KMS keys (Not Scored) (Not part of CIS benchmark)"
CHECK_SCORED_extra736="NOT_SCORED"
CHECK_TYPE_extra736="EXTRA"
CHECK_SEVERITY_extra736="Critical"
CHECK_ASFF_RESOURCE_TYPE_extra736="AwsKmsKey"
CHECK_ALTERNATE_check736="extra736"
CHECK_ASFF_COMPLIANCE_TYPE_extra736="ens-op.exp.11.aws.kms.2"

extra736(){
  textInfo "Looking for KMS keys in all regions...  "
  for regx in $REGIONS; do
    LIST_OF_CUSTOMER_KMS_KEYS=$($AWSCLI kms list-aliases $PROFILE_OPT --region $regx --output text |grep -v :alias/aws/ |awk '{ print $4 }')
    if [[ $LIST_OF_CUSTOMER_KMS_KEYS ]];then
      for key in $LIST_OF_CUSTOMER_KMS_KEYS; do
        CHECK_POLICY=$($AWSCLI kms get-key-policy --key-id $key --policy-name default $PROFILE_OPT --region $regx  --output text|awk '/Principal/{n=NR+1} n>=NR' |grep AWS\"\ :\ \"\\*\"$)
        if [[ $CHECK_POLICY ]]; then
          textFail "$regx: KMS key $key may be publicly accessible!" "$regx"
        else
          textPass "$regx: KMS key $key is not exposed to Public" "$regx"
        fi
      done
    else
      textInfo "$regx: No KMS keys found" "$regx"
    fi
  done
}