ThingsBoard 3.3.1 'name' - Stored Cross-Site Scripting (XSS)

2022-08-0900:00:00

Steffen Langenfeld

www.exploit-db.com

302

thingsboard

cross-site scripting

xss

vulnerability

security

cve-2021-42750

rule node

payload

execution

proof-of-concept

4.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

5.2 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

36.3%

JSON

# Exploit Title:  ThingsBoard 3.3.1 'name' - Stored Cross-Site Scripting (XSS)
# Date: 03/08/2022
# 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