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an elasticsearch node left without authentication answers its root banner to any client, and versions before 8.0 ship with no auth by default, so a 200 at / means every index is readable without credentials. match the "You Know, for Search" tagline together with the lucene_version field so a page that only quotes the tagline in prose does not match, then read the cluster version from the version.number field.
37 lines
711 B
YAML
37 lines
711 B
YAML
# Elasticsearch Exposure Detection Module
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id: elasticsearch-exposure
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info:
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name: Elasticsearch Exposure
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author: sif
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severity: high
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description: Detects an exposed unauthenticated Elasticsearch HTTP API
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tags: [elasticsearch, datastore, exposure, recon]
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type: http
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http:
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method: GET
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paths:
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- "{{BaseURL}}/"
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matchers:
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- type: status
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status:
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- 200
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- type: regex
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part: body
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regex:
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- '"tagline"\s*:\s*"You Know, for Search"'
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- '"lucene_version"\s*:\s*"[0-9]'
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condition: and
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extractors:
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- type: regex
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name: elasticsearch_version
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part: body
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regex:
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- '"number"\s*:\s*"([0-9]+(?:\.[0-9]+)+)'
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group: 1
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