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CloudWatch log metric filter and alarm are not set for VPC route table changes Affecting CloudWatch service in AWS

Severity

0.0
medium
0
10
    Severity Framework
    Snyk CCSS
    Rule category
    Monitoring / Accounts Monitoring

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    Frameworks
    AWS-Well-Architected CIS-AWS HIPAA ISO-27001 NIST-800-53 PCI-DSS SOC-2
  • Snyk ID SNYK-CC-00194
  • credit Snyk Research Team
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Description

Monitoring changes to route tables helps ensure that all VPC traffic flows through an expected path.

How to fix?

Create an aws_cloudwatch_log_metric_filter and aws_cloudwatch_metric_alarm with an appropriate pattern attribute set for an aws_cloudwatch_log_group and aws_cloudtrail set of resources.

Use the following pattern attribute set:

$.eventName=CreateRoute
$.eventName=CreateRouteTable
$.eventName=ReplaceRoute
$.eventName=ReplaceRouteTableAssociation
$.eventName=DeleteRouteTable
$.eventName=DeleteRoute
$.eventName=DisassociateRouteTable