CVE-2022-34765 Path traversal in OPC UA Modicon Communication Module

Medium 5.5 Published 13 Jul 2022 Updated 16 Sep 2024

Attackers can load unauthorized firmware images via path traversal in Schneider Electric RTU and OPC UA modules, potentially compromising industrial control systems.

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-2022-34765?

CVE-2022-34765 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-73: External Control of File Name or Path vulnerability exists that could cause loading of unauthorized firmware images when user-controlled data is written to the file 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-668, CWE-73

Which versions are affected by CVE-2022-34765?

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-2022-34765?

No fix has been published for CVE-2022-34765 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-2022-34765 being exploited?

There is no known exploitation of CVE-2022-34765 in the wild and no public exploit code.

Sources

Also known as GHSA-mxgc-gq8g-45hm.