securityhub-finding-sfn-remediation-cdk: Auto-remediate Security Hub findings#3231
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…y Hub findings First AWS Security Hub pattern in the repo. Routes HIGH/CRITICAL findings via Amazon EventBridge to AWS Step Functions which classifies and remediates: closes open security groups (revokes 0.0.0.0/0), blocks public Amazon S3 access, updates finding status to RESOLVED, notifies security team via Amazon SNS. 5 services: AWS Security Hub, Amazon EventBridge, AWS Step Functions, AWS Lambda, Amazon SNS. Zero competition — major enterprise gap filled.
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Description
Auto-remediate HIGH/CRITICAL AWS Security Hub findings using AWS Step Functions and AWS Lambda to close open security groups and block public Amazon S3 access.
Key Innovation
First AWS Security Hub pattern in the entire repo. Every AWS account with Security Hub enabled accumulates findings that require manual triage. This pattern automates response for common CIS benchmark violations.
Architecture
AWS Security Hub (HIGH/CRITICAL findings) → Amazon EventBridge → AWS Step Functions (classify finding type) → AWS Lambda (remediate) → Amazon SNS (notify)
Supported remediations:
Deployed and Tested
Stack deploys in us-east-1 (~130s). 13 CloudFormation resources created. EventBridge rule matches HIGH/CRITICAL findings with NEW workflow status.