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https://github.com/ghndrx/prowler.git
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43 lines
2.6 KiB
Bash
43 lines
2.6 KiB
Bash
#!/usr/bin/env bash
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# Prowler - the handy cloud security tool (c) by Toni de la Fuente
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#
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# This Prowler check is licensed under a
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# Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
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#
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# You should have received a copy of the license along with this
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# work. If not, see <http://creativecommons.org/licenses/by-nc-sa/4.0/>.
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CHECK_ID_check44="4.4"
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CHECK_TITLE_check44="[check44] Ensure routing tables for VPC peering are \"least access\" (Not Scored)"
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CHECK_SCORED_check44="NOT_SCORED"
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CHECK_TYPE_check44="LEVEL2"
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CHECK_SEVERITY_check44="Medium"
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CHECK_ASFF_TYPE_check44="Software and Configuration Checks/Industry and Regulatory Standards/CIS AWS Foundations Benchmark"
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CHECK_ASFF_RESOURCE_TYPE_check44="AwsEc2Vpc"
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CHECK_ALTERNATE_check404="check44"
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CHECK_SERVICENAME_check44="vpc"
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CHECK_RISK_check44='Being highly selective in peering routing tables is a very effective way of minimizing the impact of breach as resources outside of these routes are inaccessible to the peered VPC.'
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CHECK_REMEDIATION_check44='Review routing tables of peered VPCs for whether they route all subnets of each VPC and whether that is necessary to accomplish the intended purposes for peering the VPCs.'
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CHECK_DOC_check44='https://docs.aws.amazon.com/vpc/latest/peering/peering-configurations-partial-access.html'
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CHECK_CAF_EPIC_check44='Infrastructure Security'
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check44(){
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# "Ensure routing tables for VPC peering are \"least access\" (Not Scored)"
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textInfo "Looking for VPC peering in all regions... "
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for regx in $REGIONS; do
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LIST_OF_VPCS_PEERING_CONNECTIONS=$($AWSCLI ec2 describe-vpc-peering-connections --output text $PROFILE_OPT --region $regx --query 'VpcPeeringConnections[*].VpcPeeringConnectionId'| sort | paste -s -d" " -)
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if [[ $LIST_OF_VPCS_PEERING_CONNECTIONS ]];then
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textInfo "$regx: $LIST_OF_VPCS_PEERING_CONNECTIONS - review routing tables" "$regx"
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#LIST_OF_VPCS=$($AWSCLI ec2 describe-vpcs $PROFILE_OPT --region $regx --query 'Vpcs[*].VpcId' --output text)
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#aws ec2 describe-route-tables --filter "Name=vpc-id,Values=vpc-0213e864" --query "RouteTables[*].{RouteTableId:RouteTableId, VpcId:VpcId, Routes:Routes, AssociatedSubnets:Associations[*].SubnetId}" $PROFILE_OPT --region $regx
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# for vpc in $LIST_OF_VPCS; do
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# VPCS_WITH_PEERING=$($AWSCLI ec2 describe-route-tables --filter "Name=vpc-id,Values=$vpc" $PROFILE_OPT --region $regx --query "RouteTables[*].{RouteTableId:RouteTableId, VpcId:VpcId, Routes:Routes, AssociatedSubnets:Associations[*].SubnetId}" |grep GatewayId|grep pcx-)
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# done
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#echo $VPCS_WITH_PEERING
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else
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textPass "$regx: No VPC peering found" "$regx"
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fi
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done
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}
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