CVE-2023-4420

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.

Remediation

Workaround:

  • Please make sure that you apply general security practices when operating the LMS5xx. The following General Security Practices and Operating Guidelines could mitigate the associated security risk. It is also recommended to apply the security practices listed in the LMS5xx hardening guide.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.07%
Vendor Advisory sick.com Vendor Advisory sick.com Vendor Advisory sick.com
Affected: SICK AG LMS5xx
Published at:
Updated at:

References

Link Tags
https://sick.com/psirt vendor advisory issue tracking
https://sick.com/.well-known/csaf/white/2023/sca-2023-0007.pdf vendor advisory
https://sick.com/.well-known/csaf/white/2023/sca-2023-0007.json vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-4420?
CVE-2023-4420 has been scored as a critical severity vulnerability.
How to fix CVE-2023-4420?
As a workaround for remediating CVE-2023-4420: Please make sure that you apply general security practices when operating the LMS5xx. The following General Security Practices and Operating Guidelines could mitigate the associated security risk. It is also recommended to apply the security practices listed in the LMS5xx hardening guide.
Is CVE-2023-4420 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-4420 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-4420?
CVE-2023-4420 affects SICK AG LMS5xx.
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