mirror of
https://github.com/ghndrx/prowler.git
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59 lines
3.5 KiB
Bash
59 lines
3.5 KiB
Bash
#!/usr/bin/env bash
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# Prowler - the handy cloud security tool (copyright 2019) 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_extra779="7.79"
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CHECK_TITLE_extra779="[extra779] Ensure no security groups allow ingress from 0.0.0.0/0 or ::/0 to Elasticsearch/Kibana ports"
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CHECK_SCORED_extra779="NOT_SCORED"
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CHECK_TYPE_extra779="EXTRA"
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CHECK_SEVERITY_extra779="High"
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CHECK_ASFF_RESOURCE_TYPE_extra779="AwsEc2SecurityGroup"
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CHECK_ALTERNATE_check779="extra779"
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CHECK_SERVICENAME_extra779="ec2"
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CHECK_RISK_extra779='If Security groups are not properly configured the attack surface is increased. '
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CHECK_REMEDIATION_extra779='Use a Zero Trust approach. Narrow ingress traffic as much as possible. Consider north-south as well as east-west traffic.'
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CHECK_DOC_extra779='https://docs.aws.amazon.com/vpc/latest/userguide/VPC_SecurityGroups.html'
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CHECK_CAF_EPIC_extra779='Infrastructure Security'
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extra779(){
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ES_API_PORT="9200"
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ES_DATA_PORT="9300"
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ES_KIBANA_PORT="5601"
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# Test connectivity and authentication is performed by check extra787
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for regx in $REGIONS; do
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# crate a list of SG open to the world with port $ES_API_PORT or $ES_DATA_PORT or $ES_KIBANA_PORT
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SG_LIST=$($AWSCLI ec2 describe-security-groups $PROFILE_OPT --region $regx --output text \
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--query "SecurityGroups[?length(IpPermissions[?((FromPort==null && ToPort==null) || (FromPort<=\`$ES_API_PORT\` && ToPort>=\`$ES_API_PORT\`) || (FromPort<=\`$ES_DATA_PORT\` && ToPort>=\`$ES_DATA_PORT\`) || (FromPort<=\`$ES_KIBANA_PORT\` && ToPort>=\`$ES_KIBANA_PORT\`)) && (contains(IpRanges[].CidrIp, \`0.0.0.0/0\`) || contains(Ipv6Ranges[].CidrIpv6, \`::/0\`))]) > \`0\`].{GroupId:GroupId}")
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# in case of open security groups goes through each one
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if [[ $SG_LIST ]];then
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for sg in $SG_LIST;do
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# temp file store the list of instances IDs and public IP address if found
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TEMP_EXTRA779_FILE=$(mktemp -t prowler-${ACCOUNT_NUM}-es-domain.EXTRA779.XXXXXXXXXX)
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# finds instances with that open security group attached and get its public ip address (if it has one)
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$AWSCLI $PROFILE_OPT --region $regx ec2 describe-instances --filters Name=instance.group-id,Values=$sg --query 'Reservations[*].Instances[*].[InstanceId,PublicIpAddress]' --output text > $TEMP_EXTRA779_FILE
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# in case of exposed instances it does access checks
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if [[ -s "$TEMP_EXTRA779_FILE" ]];then
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while read instance eip ; do
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if [[ "$eip" == "None" ]];then
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textInfo "$regx: Found instance $instance with private IP on Security Group: $sg" "$regx"
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else
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textFail "$regx: Found instance $instance with public IP $eip on Security Group: $sg open to 0.0.0.0/0 on for Elasticsearch/Kibana ports - use extra787 to test AUTH" "$regx"
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fi
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done < <(cat $TEMP_EXTRA779_FILE)
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fi
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rm -rf $TEMP_EXTRA779_FILE
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done
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else
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textPass "$regx: No Security Groups found open to 0.0.0.0/0 for Elasticsearch/Kibana ports" "$regx"
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fi
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done
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}
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