OpenSearch domain open to the internet

CRITICAL

What's the problem

The domain has a public endpoint (not in a VPC) and its access policy allows Principal "*" with no Condition. Public domains limited by IP or IAM are not reported by the Fast Scan

How 6WAF detects it

  • Deterministic checks through AWS API calls (IAM, S3, EC2/VPC, CloudTrail, KMS) — 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 Opensearch.2

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