6WAF

CloudFront reads S3 without origin access control (OAC)

MEDIUM

What's the problem

An S3 origin of the distribution has no OAC. The finding separates origins still on legacy OAI (cannot read SSE-KMS objects) from origins with no restriction at all (the bucket must be public and users can bypass CloudFront). S3 website endpoints are skipped

How 6WAF detects it

  • Deterministic checks through AWS API calls (IAM, S3, EC2/VPC, CloudTrail, KMS, Secrets Manager, ACM, detection services) — no LLM is used for detection; severity is the value the scanner assigns, shown above.
  • Scanning uses an IAM Role you deploy yourself via CloudFormation; 6WAF stores no credentials and you revoke access any time by deleting the stack.
  • Automated scoring covers only part of the scope of standards such as ISO 27001 — this is a technical assessment, not a certification.

Pillar: Security — Fast Scan

Group: Network (Security Groups, VPC, public endpoints)

Reference standard: AWS Security Hub CloudFront.13

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Related checks

Security Group open to all internet trafficPort 22 (SSH) open to the internetPort 3389 (RDP) open to the internetDatabase or cache port open to the internet