Release the RAVEN: First Contact

August 5, 2026 · LevelBlue SpiderLabs · Severity: LOW

This article introduces the RAVEN tool for gathering information about Elasticsearch clusters during penetration testing engagements. It highlights the challenge of encountering an unknown Elasticsearch instance and the need for automated reconnaissance.

You are mid-engagement. Nmap finishes its sweep and port 9200 lights up on a host. Elasticsearch. You know it matters. You know the client's logging pipeline, search infrastructure, or analytics platform probably flow through it. But what do you actually know about this cluster? Right now, nothing. No version, no configuration, no indication of whether it is locked down or wide open.

Key Takeaways

Elasticsearch port 9200 often indicates critical infrastructure worth investigating.
Lack of version and configuration knowledge hinders effective security assessment.
RAVEN tool helps automate reconnaissance of Elasticsearch clusters during engagements.