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https://github.com/ghndrx/prowler.git
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46 lines
2.6 KiB
Bash
46 lines
2.6 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_check42="4.2"
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CHECK_TITLE_check42="[check42] Ensure no security groups allow ingress from 0.0.0.0/0 or ::/0 to port 3389"
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CHECK_SCORED_check42="SCORED"
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CHECK_CIS_LEVEL_check42="LEVEL2"
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CHECK_SEVERITY_check42="High"
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CHECK_ASFF_TYPE_check42="Software and Configuration Checks/Industry and Regulatory Standards/CIS AWS Foundations Benchmark"
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CHECK_ASFF_RESOURCE_TYPE_check42="AwsEc2SecurityGroup"
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CHECK_ALTERNATE_check402="check42"
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CHECK_ASFF_COMPLIANCE_TYPE_check42="ens-mp.com.4.aws.sg.5"
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CHECK_SERVICENAME_check42="ec2"
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CHECK_RISK_check42='Even having a perimeter firewall; having security groups open allows any user or malware with vpc access to scan for well known and sensitive ports and gain access to instance.'
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CHECK_REMEDIATION_check42='Apply Zero Trust approach. Implement a process to scan and remediate unrestricted or overly permissive security groups. Recommended best practices is to narrow the definition for the minimum ports required.'
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CHECK_DOC_check42='https://docs.aws.amazon.com/eks/latest/userguide/sec-group-reqs.html'
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CHECK_CAF_EPIC_check42='Infrastructure Security'
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check42(){
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# "Ensure no security groups allow ingress from 0.0.0.0/0 or ::/0 to port 3389 (Scored)"
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for regx in $REGIONS; do
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SG_LIST=$("${AWSCLI}" ec2 describe-security-groups --query 'SecurityGroups[?length(IpPermissions[?((FromPort==null && ToPort==null) || (FromPort<=`3389` && ToPort>=`3389`)) && (contains(IpRanges[].CidrIp, `0.0.0.0/0`) || contains(Ipv6Ranges[].CidrIpv6, `::/0`)) && (IpProtocol==`tcp`) ]) > `0`].{GroupId:GroupId}' $PROFILE_OPT --region "${regx}" --output text 2>&1)
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if [[ $(echo "$SG_LIST" | grep -E 'AccessDenied|UnauthorizedOperation') ]]; then
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textInfo "$regx: Access Denied trying to describe security groups" "$regx"
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continue
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fi
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if [[ $SG_LIST ]];then
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for SG in $SG_LIST;do
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textFail "$regx: Found Security Group: $SG open to 0.0.0.0/0" "$regx" "$SG"
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done
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else
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textPass "$regx: No Security Groups found with port 3389 TCP open to 0.0.0.0/0" "$regx" "$SG"
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fi
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done
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}
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