#!/usr/bin/env bash

# Prowler - the handy cloud security tool (c) by Toni de la Fuente
#
# This Prowler check is licensed under a
# Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
#
# You should have received a copy of the license along with this
# work. If not, see <http://creativecommons.org/licenses/by-nc-sa/4.0/>.

CHECK_ID_check41="4.1"
CHECK_TITLE_check41="[check41] Ensure no security groups allow ingress from 0.0.0.0/0 or ::/0 to port 22 (Scored)"
CHECK_SCORED_check41="SCORED"
CHECK_TYPE_check41="LEVEL2"
CHECK_ASFF_TYPE_check41="Software and Configuration Checks/Industry and Regulatory Standards/CIS AWS Foundations Benchmark"
CHECK_ASFF_RESOURCE_TYPE_check41="AwsEc2SecurityGroup"
CHECK_ALTERNATE_check401="check41"

check41(){
  # "Ensure no security groups allow ingress from 0.0.0.0/0 or ::/0 to port 22 (Scored)"
  for regx in $REGIONS; do
    SG_LIST=$($AWSCLI ec2 describe-security-groups --query 'SecurityGroups[?length(IpPermissions[?((FromPort==null && ToPort==null) || (FromPort<=`22` && ToPort>=`22`)) && (contains(IpRanges[].CidrIp, `0.0.0.0/0`) || contains(Ipv6Ranges[].CidrIpv6, `::/0`))]) > `0`].{GroupId:GroupId}' $PROFILE_OPT --region $regx --output text)
    if [[ $SG_LIST ]];then
      for SG in $SG_LIST;do
        textFail "Found Security Group: $SG open to 0.0.0.0/0 in Region $regx" "$regx"
      done
    else
      textPass "No Security Groups found in $regx with port 22 TCP open to 0.0.0.0/0" "$regx"
    fi
  done
}