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57 lines
2.8 KiB
Bash
57 lines
2.8 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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#
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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/MyCloudTrailLG \
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# --filter-name AWSCloudTrailChanges \
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# --filter-pattern '{ ($.eventName = CreateTrail) || ($.eventName = UpdateTrail) || ($.eventName = DeleteTrail) || ($.eventName = StartLogging) || ($.eventName = StopLogging) }' \
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# --metric-transformations metricName=CloudTrailEventCount,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 "CloudTrail Changes" \
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# --alarm-description "Triggered by AWS CloudTrail configuration changes." \
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# --metric-name CloudTrailEventCount \
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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_check35="3.5"
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CHECK_TITLE_check35="[check35] Ensure a log metric filter and alarm exist for CloudTrail configuration changes"
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CHECK_SCORED_check35="SCORED"
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CHECK_CIS_LEVEL_check35="LEVEL1"
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CHECK_SEVERITY_check35="Medium"
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CHECK_ASFF_TYPE_check35="Software and Configuration Checks/Industry and Regulatory Standards/CIS AWS Foundations Benchmark"
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CHECK_ASFF_RESOURCE_TYPE_check35="AwsCloudTrailTrail"
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CHECK_ALTERNATE_check305="check35"
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CHECK_ASFF_COMPLIANCE_TYPE_check35="ens-op.exp.8.aws.trail.1"
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CHECK_SERVICENAME_check35="cloudtrail"
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CHECK_RISK_check35='Monitoring unauthorized API calls will help reveal application errors and may reduce time to detect malicious activity.'
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CHECK_REMEDIATION_check35='It is recommended that a metric filter and alarm be established for unauthorized requests.'
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CHECK_DOC_check35='https://docs.aws.amazon.com/awscloudtrail/latest/userguide/cloudwatch-alarms-for-cloudtrail.html'
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CHECK_CAF_EPIC_check35='Logging and Monitoring'
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check35(){
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check3x '\$\.eventName\s*=\s*CreateTrail.+\$\.eventName\s*=\s*UpdateTrail.+\$\.eventName\s*=\s*DeleteTrail.+\$\.eventName\s*=\s*StartLogging.+\$\.eventName\s*=\s*StopLogging'
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}
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