From 2ac96cf29a52b796cbae7e7bf0909c1b96fbea62 Mon Sep 17 00:00:00 2001 From: Pepe Fagoaga Date: Mon, 19 Apr 2021 19:18:23 +0200 Subject: [PATCH] feat(aws-securitygroups): include new control to test ingress from 0.0.0.0/0 or ::/0 to FTP ports 20 or 21 --- checks/check_extra7134 | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 checks/check_extra7134 diff --git a/checks/check_extra7134 b/checks/check_extra7134 new file mode 100644 index 00000000..bb577b28 --- /dev/null +++ b/checks/check_extra7134 @@ -0,0 +1,37 @@ +#!/usr/bin/env bash + +# Prowler - the handy cloud security tool (copyright 2019) 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_extra7134="7.134" +CHECK_TITLE_extra7134="[extra7134] Ensure no security groups allow ingress from 0.0.0.0/0 or ::/0 to FTP ports 20 or 21 (Not Scored) (Not part of CIS benchmark)" +CHECK_SCORED_extra7134="NOT_SCORED" +CHECK_TYPE_extra7134="EXTRA" +CHECK_SEVERITY_extra7134="High" +CHECK_ASFF_RESOURCE_TYPE_extra7134="AwsEc2SecurityGroup" +CHECK_ALTERNATE_check7134="extra7134" +CHECK_SERVICENAME_extra7134="ec2" +CHECK_RISK_extra7134='If Security groups are not properly configured the attack surface is increased. ' +CHECK_REMEDIATION_extra7134='Use a Zero Trust approach. Narrow ingress traffic as much as possible. Consider north-south as well as east-west traffic.' +CHECK_DOC_extra7134='https://docs.aws.amazon.com/vpc/latest/userguide/VPC_SecurityGroups.html' +CHECK_CAF_EPIC_extra7134='Infrastructure Security' + +extra7134(){ + for regx in $REGIONS; do + SG_LIST=$($AWSCLI ec2 describe-security-groups --query 'SecurityGroups[?length(IpPermissions[?((FromPort==null && ToPort==null) || (FromPort==`20` && ToPort==`21`)) && (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 $SG_LIST;do + textFail "$regx: Found Security Group: $SG open to 0.0.0.0/0 for FTP ports" "$regx" + done + else + textPass "$regx: No Security Groups found with any port open to 0.0.0.0/0 for FTP ports" "$regx" + fi + done +} \ No newline at end of file