CVE-2022-47375 Memory corruption in SIMATIC S7-400 CPU 412-2 PN V7

Q: Is CVE-2022-47375 being exploited?

There is no known exploitation of CVE-2022-47375 in the wild and no public exploit code.

Q: How do I fix CVE-2022-47375?

No fix has been published for CVE-2022-47375 yet. Limit exposure of the affected software until one is available.

High 7.5 Published 12 Dec 2023 Updated 3 Aug 2024

An attacker can cause a denial of service on Siemens SIMATIC and SINAMICS devices by exploiting a buffer overflow triggered by long file names.

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

What is CVE-2022-47375?

CVE-2022-47375 is a high-severity memory corruption vulnerability in Siemens SIMATIC S7-400 CPU 412-2 PN V7, published on 12 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability has been identified in SIMATIC PC-Station Plus (All versions), SIMATIC S7-400 CPU 412-2 PN V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions), SINAMICS S120 (incl. SIPLUS variants) (All versions < V5.2 SP3 HF15), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions). The affected products do not handle long file names correctly. This could allow an attacker to create a buffer overflow and create a denial of service condition for the device.

Weakness: CWE-119, CWE-805

Which versions are affected by CVE-2022-47375?

It affects 9 products.

Products include Siemens 6ag1414-3em07-7ab0 Firmware, Siemens 6ag1416-3es07-7ab0 Firmware, Siemens 6es7412-2ek07-0ab0 Firmware, Siemens 6es7414-3em07-0ab0 Firmware, Siemens 6es7414-3fm07-0ab0 Firmware, Siemens 6es7416-3es07-0ab0 Firmware and 3 more.

How do I fix CVE-2022-47375?

No fix has been published for CVE-2022-47375 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-2022-47375 being exploited?

There is no known exploitation of CVE-2022-47375 in the wild and no public exploit code.

CVE-2022-47374 Denial of service in SIMATIC S7-400 CPU 412-2 PN V7 High 7.5

Sources

Also known as GHSA-mw8p-jf63-v8fr.