CVE-2023-1083CWE-306

Welotec: improper access control in TK500v1 router series

Critical · published April 9, 2024

CVSS v3.1
9.8
EPSS
1%
Percentile
51.8
In the wild
Unconfirmed
What it is

🚨 One crafty MQTT topic name is all it takes for an attacker to send commands like a puppet master pulling the strings! 🔥 Think of it like a restaurant where anyone can walk in and shout their order without needing a reservation or even a name — they can switch up the dish, add extra toppings, or even take over the kitchen entirely! An attacker could send configuration commands, reboot devices at will, or even push firmware updates, potentially causing chaos in your network. This could result in unauthorized access, operational disruptions, or even complete device takeover, leading to an absolute nightmare for your security!

Put simply

Think of it like a restaurant where anyone can walk in and shout their order without needing a reservation or even a name — they can switch up the dish, add extra toppings, or even take over the kitchen entirely! This vulnerability stems from a lack of authentication in MQTT messaging, allowing unauthenticated remote attackers to exploit topic names to send and receive messages and commands unchecked.

What to do

An attacker could send configuration commands, reboot devices at will, or even push firmware updates, potentially causing chaos in your network. This could result in unauthorized access, operational disruptions, or even complete device takeover, leading to an absolute nightmare for your security! To mitigate this, patch your systems to the latest version immediately, review your MQTT configurations, and implement strict access controls to prevent unauthorized access. Don't forget to audit which commands can be executed via these topics! You've got this! With a quick update and the right safeguards, you can keep your systems secure and your network safe! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00679 · 51.8th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2024-04-09T08:25Z
EPSS history
Timeline
  • 09 APR 08:25Z
    Welotec: improper access control in TK500v1 router series
    cvelistv5