IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Inbound Connection to an Unsecure Elasticsearch Node
editInbound Connection to an Unsecure Elasticsearch Node
editIdentifies Elasticsearch nodes that do not have Transport Layer Security (TLS), and/or lack authentication, and are accepting inbound network connections over the default Elasticsearch port.
Rule type: query
Rule indices:
- auditbeat-*
- filebeat-*
- packetbeat-*
- logs-endpoint.events.*
Severity: medium
Risk score: 47
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Network
- Threat Detection
- Initial Access
- Host
Version: 5
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
edit## Config This rule requires the addition of port `9200` and `send_all_headers` to the `HTTP` protocol configuration in `packetbeat.yml`. See the References section for additional configuration documentation.
Rule query
editevent.category:network_traffic AND network.protocol:http AND status:OK AND destination.port:9200 AND network.direction:inbound AND NOT http.response.headers.content-type:"image/x-icon" AND NOT _exists_:http.request.headers.authorization
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Initial Access
- ID: TA0001
- Reference URL: https://attack.mitre.org/tactics/TA0001/
-
Technique:
- Name: Exploit Public-Facing Application
- ID: T1190
- Reference URL: https://attack.mitre.org/techniques/T1190/