CVE-2022-34762 Path traversal in OPC UA Modicon Communication Module

Medium 5.9 Published 13 Jul 2022 Updated 16 Sep 2024

Path traversal allows loading unauthorized firmware images, potentially leading to code execution on Schneider Electric Modicon communication modules.

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-2022-34762?

CVE-2022-34762 is a medium-severity path traversal 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability exists that could cause unauthorized firmware image loading when unsigned images are added to the firmware image path. Affected Products: X80 advanced RTU Communication Module (BMENOR2200H) (V2.01 and later), OPC UA Modicon Communication Module (BMENUA0100) (V1.10 and prior)

Weakness: CWE-22

Which versions are affected by CVE-2022-34762?

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-2022-34762?

No fix has been published for CVE-2022-34762 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2022-34762 being exploited?

There is no known exploitation of CVE-2022-34762 in the wild and no public exploit code.

Sources

Also known as GHSA-4vqc-4jrp-pwj7.