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46 lines
2.3 KiB
Bash
46 lines
2.3 KiB
Bash
#!/usr/bin/env bash
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# Prowler - the handy cloud security tool (copyright 2018) by Toni de la Fuente
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy
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# of the License at http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software distributed
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# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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# CONDITIONS OF ANY KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations under the License.
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CHECK_ID_extra710="7.10"
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CHECK_TITLE_extra710="[extra710] Check for internet facing EC2 Instances"
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CHECK_SCORED_extra710="NOT_SCORED"
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CHECK_CIS_LEVEL_extra710="EXTRA"
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CHECK_SEVERITY_extra710="Medium"
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CHECK_ASFF_RESOURCE_TYPE_extra710="AwsEc2Instance"
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CHECK_ALTERNATE_check710="extra710"
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CHECK_ASFF_COMPLIANCE_TYPE_extra710="ens-mp.com.4.aws.vpc.1"
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CHECK_SERVICENAME_extra710="ec2"
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CHECK_RISK_extra710='Exposing an EC2 directly to internet increases the attack surface and therefore the risk of compromise.'
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CHECK_REMEDIATION_extra710='Use an ALB and apply WAF ACL.'
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CHECK_DOC_extra710='https://aws.amazon.com/blogs/aws/aws-web-application-firewall-waf-for-application-load-balancers/'
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CHECK_CAF_EPIC_extra710='Infrastructure Security'
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extra710(){
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# "Check for internet facing EC2 Instances "
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for regx in $REGIONS; do
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LIST_OF_PUBLIC_INSTANCES=$($AWSCLI ec2 describe-instances $PROFILE_OPT --region $regx --query 'Reservations[*].Instances[?PublicIpAddress].[InstanceId,PublicIpAddress]' --output text 2>&1)
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if [[ $(echo "$LIST_OF_PUBLIC_INSTANCES" | grep -E 'AccessDenied|UnauthorizedOperation') ]]; then
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textInfo "$regx: Access Denied trying to describe instances" "$regx"
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continue
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fi
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if [[ $LIST_OF_PUBLIC_INSTANCES ]];then
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while read -r instance;do
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INSTANCE_ID=$(echo $instance | awk '{ print $1; }')
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PUBLIC_IP=$(echo $instance | awk '{ print $2; }')
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textFail "$regx: Instance: $INSTANCE_ID at IP: $PUBLIC_IP is internet-facing!" "$regx" "$INSTANCE_ID"
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done <<< "$LIST_OF_PUBLIC_INSTANCES"
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else
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textPass "$regx: no Internet Facing EC2 Instances found" "$regx" "$INSTANCE_ID"
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fi
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done
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}
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