CloudWatch log metric filter and alarm are not set for VPC route table changes Affecting CloudWatch service in AWS
Severity Framework
CCSS (Common Configuration Scoring System) is a set of measures used to determine the severity of the rule.
Snyk CCSS
Rule category
Each rule is associated with a high-level category. For example IAM, Container, Monitoring, Logging, Network, etc.
Monitoring/ Accounts Monitoring
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- Snyk IDSNYK-CC-00194
- creditSnyk Research Team
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