id: CVE-2019-20933

info:
  name: Authentication Bypass InfluxDB
  author: pussycat0x,c-sh0
  severity: critical
  description: InfluxDB before 1.7.6 has an authentication bypass vulnerability in the authenticate function in services/httpd/handler.go because a JWT token may have an empty SharedSecret (aka shared secret).
  reference:
    - https://github.com/LorenzoTullini/InfluxDB-Exploit-CVE-2019-20933
    - https://nvd.nist.gov/vuln/detail/CVE-2019-20933
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20933
    - https://github.com/influxdata/influxdb/compare/v1.7.5...v1.7.6
  remediation: Update Influxdb to version 1.6.7~rc0-1 or higher.
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2019-20933
    cwe-id: CWE-287
  metadata:
    shodan-dork: InfluxDB
    verified: "true"
  tags: unauth,db,influxdb,misconfig
requests:
  - method: GET
    path:
      - "{{BaseURL}}/query?db=db&q=SHOW%20DATABASES"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"results":'
          - '"name":"databases"'
        condition: and

      - type: status
        status:
          - 200