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54 lines
2.4 KiB
Bash
54 lines
2.4 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 AWSCMKChanges \
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# --filter-pattern '{ ($.eventSource = kms.amazonaws.com) && (($.eventName = DisableKey) || ($.eventName = ScheduleKeyDeletion)) }' \
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# --metric-transformations metricName=CMKEventCount,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 AWSCMKChangesAlarm \
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# --alarm-description "Triggered by AWS CMK changes." \
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# --metric-name CMKEventCount \
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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_check37="3.7"
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CHECK_TITLE_check37="[check37] Ensure a log metric filter and alarm exist for disabling or scheduled deletion of customer created KMS CMKs (Scored)"
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CHECK_SCORED_check37="SCORED"
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CHECK_TYPE_check37="LEVEL2"
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CHECK_SEVERITY_check37="Medium"
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CHECK_ASFF_TYPE_check37="Software and Configuration Checks/Industry and Regulatory Standards/CIS AWS Foundations Benchmark"
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CHECK_ASFF_RESOURCE_TYPE_check37="AwsCloudTrailTrail"
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CHECK_ALTERNATE_check307="check37"
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CHECK_ASFF_COMPLIANCE_TYPE_check37="ens-op.exp.11.aws.kms.1"
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CHECK_SERVICENAME_check37="kms"
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CHECK_RISK_check37='Monitoring unauthorized API calls will help reveal application errors and may reduce time to detect malicious activity.'
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CHECK_REMEDIATION_check37='It is recommended that a metric filter and alarm be established for unauthorized requests.'
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CHECK_DOC_check37='https://docs.aws.amazon.com/awscloudtrail/latest/userguide/cloudwatch-alarms-for-cloudtrail.html'
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CHECK_CAF_EPIC_check37='Logging and Monitoring'
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check37(){
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check3x '\$\.eventSource\s*=\s*kms.amazonaws.com.+\$\.eventName\s*=\s*DisableKey.+\$\.eventName\s*=\s*ScheduleKeyDeletion'
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}
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