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45 lines
2.0 KiB
Bash
45 lines
2.0 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 NetworkACLConfigChanges \
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# --filter-pattern '{ ($.eventName = CreateNetworkAcl) || ($.eventName = CreateNetworkAclEntry) || ($.eventName = DeleteNetworkAcl) || ($.eventName = DeleteNetworkAclEntry) || ($.eventName = ReplaceNetworkAclEntry) || ($.eventName = ReplaceNetworkAclAssociation) }' \
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# --metric-transformations metricName=NetworkAclEventCount,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 NetworkACLConfigChangesAlarm \
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# --alarm-description "Triggered by AWS Network ACL(s) config changes." \
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# --metric-name NetworkAclEventCount \
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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_check311="3.11"
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CHECK_TITLE_check311="[check311] Ensure a log metric filter and alarm exist for changes to Network Access Control Lists (NACL) (Scored)"
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CHECK_SCORED_check311="SCORED"
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CHECK_TYPE_check311="LEVEL2"
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CHECK_ALTERNATE_check311="check311"
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check311(){
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check3x '\$\.eventName\s*=\s*CreateNetworkAcl.+\$\.eventName\s*=\s*CreateNetworkAclEntry.+\$\.eventName\s*=\s*DeleteNetworkAcl.+\$\.eventName\s*=\s*DeleteNetworkAclEntry.+\$\.eventName\s*=\s*ReplaceNetworkAclEntry.+\$\.eventName\s*=\s*ReplaceNetworkAclAssociation'
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}
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