Saturday, November 9, 2024

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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Steven Black (n0tst3)
Hello! I'm Steve, an independent security researcher, and analyst from Scotland, UK. I've had an avid interest in Computers, Technology and Security since my early teens. 20 years on, and, it's a whole lot more complicated... I've assisted Governments, Individuals and Organizations throughout the world. Including; US DOJ, NHS UK, GOV UK. I'll often reblog infosec-related articles that I find interesting. On the RiSec website, You'll also find a variety of write-ups, tutorials and much more!

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