# Hadoop HDFS NameNode Exposure Detection Module

id: hadoop-namenode-exposure
info:
  name: Hadoop HDFS NameNode Exposure
  author: sif
  severity: medium
  description: Detects an exposed Hadoop HDFS NameNode jmx interface that leaks the version, capacity and every datanode's internal hostname
  tags: [hadoop, hdfs, namenode, apache, big-data, jmx, information-disclosure, exposure, unauth, recon]

type: http

http:
  method: GET
  paths:
    - "{{BaseURL}}/jmx?qry=Hadoop:service=NameNode,name=NameNodeInfo"

  matchers:
    - type: regex
      part: body
      regex:
        - '"name"\s*:\s*"Hadoop:service=NameNode,name=NameNodeInfo"'

    - type: word
      part: body
      words:
        - "\"LiveNodes\""
        - "\"DeadNodes\""
      condition: and

    - type: status
      status:
        - 200

  extractors:
    - type: regex
      name: hdfs_version
      part: body
      regex:
        - '"SoftwareVersion"\s*:\s*"([^"]+)"'
      group: 1