CVE-2023-4420 Information disclosure in LMS5xx

Critical 9.8 Published Updated

Remote attackers can intercept and manipulate unencrypted communication with SICK LMS5xx sensors, leading to sensitive data disclosure and integrity loss.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-4420?

CVE-2023-4420 is a critical vulnerability in SICK AG LMS5xx, published on 24 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A remote unprivileged attacker can intercept the communication via e.g. Man-In-The-Middle, due to the absence of Transport Layer Security (TLS) in the SICK LMS5xx. This lack of encryption in the communication channel can lead to the unauthorized disclosure of sensitive information. The attacker can exploit this weakness to eavesdrop on the communication between the LMS5xx and the Client, and potentially manipulate the data being transmitted.

Weakness: CWE-311

Which versions are affected by CVE-2023-4420?

It affects 3 products.

Products include Sick Lms500 Firmware, Sick Lms511 Firmware, Sick Lms531 Firmware.

How do I fix CVE-2023-4420?

No fix has been published for CVE-2023-4420 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-4420 being exploited?

There is no known exploitation of CVE-2023-4420 in the wild and no public exploit code.

Sources

Also known as GHSA-f3xg-jgh3-jw7h.

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