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TigahandGitHub
c69818ecd0
add recon modules for unauthenticated proxy and server admin interfaces that should be loopback-only: caddy /config/ returns the full running configuration and accepts a config-replacing post, and envoy /server_info exposes the build and command-line options of an admin interface that also offers config_dump and shutdown.
42 lines
920 B
YAML
42 lines
920 B
YAML
# Envoy Proxy Admin Interface Exposure Detection Module
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id: envoy-admin-exposure
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info:
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name: Envoy Admin Interface Exposure
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author: sif
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severity: high
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description: Detects an exposed Envoy admin interface that leaks build and config details and exposes runtime shutdown and modification
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tags: [envoy, proxy, service-mesh, admin, controlplane, exposure, unauth, 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}}/server_info"
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matchers:
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- type: word
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part: body
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words:
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- "\"hot_restart_version\""
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- "\"command_line_options\""
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condition: and
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- type: regex
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part: body
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regex:
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- '"state"\s*:\s*"(LIVE|PRE_INITIALIZING|INITIALIZING|DRAINING)"'
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- type: status
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status:
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- 200
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extractors:
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- type: regex
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name: envoy_version
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part: body
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regex:
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- '"version"\s*:\s*"([^"]+)"'
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group: 1
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