ThingsBoard 3.3.1 XSS – Stored Cross-Site Scripting (XSS)

A Stored XSS (Cross-Site Scripting) vulnerability was discovered in ThingsBoard 3.3.1 by security researchers Steffen Langenfeld & Sebastian Biehler.

# Exploit Title:  ThingsBoard 3.3.1 'name' - Stored Cross-Site Scripting (XSS)
# Exploit Author: Steffen Langenfeld & Sebastian Biehler
# Vendor Homepage: https://thingsboard.io/
# Software Link: https://github.com/thingsboard/thingsboard/releases/tag/v3.3.1
# Version: 3.3.1
# CVE : CVE-2021-42750
# Tested on: Linux

#Proof-Of-Concept:
When creating a rule node (any) and putting a script payload inside the name of the rule node, it is executed upon hovering above the node within the editor.

#Steps

1. Create a new rule node (via the menu "Rule chains")
2. Put a javascript payload within the name e.g <script>alert('XSS')</script>
3. Save the node
4. Upon hovering above the node within the editor the payload is executed

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