CVE-2022-34763 Security feature bypass in OPC UA Modicon Communication Module

Medium 5.9 Published 13 Jul 2022 Updated 16 Sep 2024

Attackers can load unauthorized firmware images on Schneider Electric RTU and OPC UA modules due to insufficient signature verification.

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

What is CVE-2022-34763?

CVE-2022-34763 is a medium-severity vulnerability in Schneider Electric OPC UA Modicon Communication Module, published on 13 Jul 2022. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A CWE-345: Insufficient Verification of Data Authenticity vulnerability exists that could cause loading of unauthorized firmware images due to improper verification of the firmware signature. Affected Products: X80 advanced RTU Communication Module (BMENOR2200H) (V2.01 and later), OPC UA Modicon Communication Module (BMENUA0100) (V1.10 and prior)

Weakness: CWE-345

Which versions are affected by CVE-2022-34763?

It affects 2 products.

Products include Schneider-Electric Opc Ua Module for M580 Firmware, Schneider-Electric X80 Advanced Rtu Module Firmware.

How do I fix CVE-2022-34763?

No fix has been published for CVE-2022-34763 yet. Limit exposure of the affected software until one is available.

Is CVE-2022-34763 being exploited?

There is no known exploitation of CVE-2022-34763 in the wild and no public exploit code.

Sources

Also known as GHSA-37rh-j9cp-x58f.