Online Learning Management System 1.0 - Multiple Stored XSS

# Exploit Title:  Online Learning Management System 1.0 - Multiple Stored XSS
# Exploit Author: Aakash Madaan (Godsky)
# Date: 2020-12-22
# Vendor Homepage: https://www.sourcecodester.com/php/7339/learning-management-system.html
# Software Link: https://www.sourcecodester.com/download-code?nid=7339&title=Online+Learning+Management+System+using+PHP%2FMySQLi+with+Source+Code
# Affected Version: Version 1
# Category: Web Application
# Tested on: Parrot OS

[+] Step 1. Login to the application with admin credentials


[+] Step 2.1

    (a). Click on "Subject" page.  {Uri :http(s)://<host>/admin/subject.php}
    (b). Now click on the "Add Subject" button to add a new subject.
    (c). In the "Subject Title" field, use XSS payload '"><script>alert("subject")</script>' as the name of new course (Also fill the respective sections if required).
    (d). Click on "Save" when done and this will trigger the Stored XSS payloads. Whenever you click on "Subject" section, your XSS Payloads will be triggered.

[+] Step 2.2

    (a). Click on "Class" page.  {Uri : http(s)://<host>/admin/class.php}
    (b). Under the "Add class" in the "Class Name" field, use XSS payload '"><script>alert("class")</script>' as the name of new course.
    (c). Click on "Save" when done and this will trigger the Stored XSS payloads. Whenever you click on "Class" section, your XSS Payloads will be triggered.

[+] Step 2.3

    (a). Click on "Admin Users" page.  {Uri :http(s)://<host>/admin/admin_user.php}
    (b). Under the "Add user" in the "First Name" field, use XSS payload '"><script>alert("Admin User")</script>' as the name of new course (Also fill the respective sections if required).
              [ Note : The XSS can also be triggered if we put the same payload in "Last Name" or "Username" fields ]
    (c). Click on "Save" when done and this will trigger the Stored XSS payloads. Whenever you click on "Admin Users", your XSS Payloads will be triggered.

[+] Step 2.4

    (a). Click on "Department" page.  {Uri :http(s)://<host>/admin/department.php}
    (b). In the "Department" field, use XSS payload '"><script>alert("Department")</script>' as the name of new course (Also fill the respective sections if required).
              [ Note : The XSS can also be triggered if we put the same payload in "Person Incharge" field ]
    (c). Click on "Save" when done and this will trigger the Stored XSS payloads. Whenever you click on "Department", your XSS Payloads will be triggered.

[+] Step 2.5

    (a). Click on "Students" page.  {Uri :http(s)://<host>/admin/students.php}
    (b). Under "Add Student" in the "First Name" field, use XSS payload '"><script>alert("students")</script>' as the name of new course (Also fill the respective sections if required).
              [ Note : The XSS can also be triggered if we put the same payload in "Last Name" field ]
    (c). Click on "Save" when done and this will trigger the Stored XSS payloads. Whenever you click on "Students", your XSS Payloads will be triggered.

[+] Step 2.6

    (a). Click on "Teachers" page.  {Uri :http(s)://<host>/admin/teachers.php}
    (b). Under "Add Student" in the "First Name" field, use XSS payload '"><script>alert("students")</script>' as the name of new course (Also fill the respective sections if required).
              [ Note : The XSS can also be triggered if we put the same payload in "Last Name" field ]
    (c). Click on "Save" when done and this will trigger the Stored XSS payloads. Whenever you click on "Teachers", your XSS Payloads will be triggered.

[+] Step 3. This should trigger the XSS payload and anytime you click on respective pages, your stored XSS payloads will be triggered.