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49 lines
2.3 KiB
Bash
49 lines
2.3 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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#
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# Remediation:
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#
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# https://d1.awsstatic.com/whitepapers/compliance/AWS_CIS_Foundations_Benchmark.pdf
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#
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# aws logs put-metric-filter \
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# --region us-east-1 \
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# --log-group-name CloudTrail/CloudWatchLogGroup \
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# --filter-name VPCGatewayConfigChanges \
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# --filter-pattern '{ ($.eventName = CreateCustomerGateway) || ($.eventName = DeleteCustomerGateway) || ($.eventName = AttachInternetGateway) || ($.eventName = CreateInternetGateway) || ($.eventName = DeleteInternetGateway) || ($.eventName = DetachInternetGateway) }' \
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# --metric-transformations metricName=GatewayEventCount,metricNamespace=CloudTrailMetrics,metricValue=1
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#
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# aws cloudwatch put-metric-alarm \
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# --region us-east-1 \
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# --alarm-name VPCGatewayConfigChangesAlarm \
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# --alarm-description "Triggered by VPC Customer/Internet Gateway changes." \
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# --metric-name GatewayEventCount \
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# --namespace CloudTrailMetrics \
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# --statistic Sum \
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# --comparison-operator GreaterThanOrEqualToThreshold \
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# --evaluation-periods 1 \
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# --period 300 \
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# --threshold 1 \
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# --actions-enabled \
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# --alarm-actions arn:aws:sns:us-east-1:123456789012:CloudWatchAlarmTopic
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CHECK_ID_check312="3.12"
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CHECK_TITLE_check312="[check312] Ensure a log metric filter and alarm exist for changes to network gateways (Scored)"
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CHECK_SCORED_check312="SCORED"
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CHECK_TYPE_check312="LEVEL1"
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CHECK_SEVERITY_check312="Medium"
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CHECK_ASFF_TYPE_check312="Software and Configuration Checks/Industry and Regulatory Standards/CIS AWS Foundations Benchmark"
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CHECK_ASFF_RESOURCE_TYPE_check312="AwsCloudTrailTrail"
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CHECK_ALTERNATE_check312="check312"
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CHECK_SERVICENAME_check312="vpc"
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check312(){
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check3x '\$\.eventName\s*=\s*CreateCustomerGateway.+\$\.eventName\s*=\s*DeleteCustomerGateway.+\$\.eventName\s*=\s*AttachInternetGateway.+\$\.eventName\s*=\s*CreateInternetGateway.+\$\.eventName\s*=\s*DeleteInternetGateway.+\$\.eventName\s*=\s*DetachInternetGateway'
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}
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