CVE-2022-34756 Memory corruption in Easergy P5

High 8.8 Published 13 Jul 2022 Updated 17 Sep 2024

A buffer overflow in the Easergy P5 Web HMI allows remote attackers to execute arbitrary code or crash the HTTPS stack.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-34756?

CVE-2022-34756 is a high-severity memory corruption vulnerability in Schneider Electric Easergy P5, published on 13 Jul 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A CWE-120: Buffer Copy without Checking Size of Input vulnerability exists that could result in remote code execution or the crash of HTTPs stack which is used for the device Web HMI. Affected Products: Easergy P5 (V01.401.102 and prior)

Weakness: CWE-120

Which versions are affected by CVE-2022-34756?

It affects 1 product.

Products include Schneider-Electric Easergy P5 Firmware.

How do I fix CVE-2022-34756?

No fix has been published for CVE-2022-34756 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-34756 being exploited?

There is no known exploitation of CVE-2022-34756 in the wild and no public exploit code.

Sources

Also known as GHSA-8995-37xw-9hjj.