#!/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_extra72="7.2"
CHECK_TITLE_extra72="[extra72] Ensure there are no EBS Snapshots set as Public (Not Scored) (Not part of CIS benchmark)"
CHECK_SCORED_extra72="NOT_SCORED"
CHECK_TYPE_extra72="EXTRA"
CHECK_SEVERITY_extra72="Critical"
CHECK_ASFF_RESOURCE_TYPE_extra72="AwsEc2Snapshot"
CHECK_ALTERNATE_extra702="extra72"
CHECK_ALTERNATE_check72="extra72"
CHECK_ALTERNATE_check702="extra72"
CHECK_SERVICENAME_extra72="ec2"
CHECK_RISK_extra72='When you share a snapshot; you are giving others access to all of the data on the snapshot. Share snapshots only with people with whom you want to share all of your snapshot data.'
CHECK_REMEDIATION_extra72='Ensure the snapshot should be shared.'
CHECK_DOC_extra72='https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-modifying-snapshot-permissions.html'
CHECK_CAF_EPIC_extra72='Data Protection'

extra72(){
  # "Ensure there are no EBS Snapshots set as Public (Not Scored) (Not part of CIS benchmark)"
  textInfo "Looking for EBS Snapshots in all regions...  "
  for regx in $REGIONS; do
    LIST_OF_EBS_SNAPSHOTS=$($AWSCLI ec2 describe-snapshots $PROFILE_OPT --region $regx --owner-ids $ACCOUNT_NUM --output text --query 'Snapshots[*].{ID:SnapshotId}' --max-items $MAXITEMS | grep -v None 2> /dev/null)
    for snapshot in $LIST_OF_EBS_SNAPSHOTS; do
      SNAPSHOT_IS_PUBLIC=$($AWSCLI ec2 describe-snapshot-attribute $PROFILE_OPT --region $regx --output text --snapshot-id $snapshot --attribute createVolumePermission --query "CreateVolumePermissions[?Group=='all']")
      if [[ $SNAPSHOT_IS_PUBLIC ]];then
        textFail "$regx: $snapshot is currently Public!" "$regx" "$snapshot"
      else
        textPass "$regx: $snapshot is not Public" "$regx" "$snapshot"
      fi
    done
  done
}