CVE-2021-43619 Memory corruption in n/a

High 7.8 Published 1 Mar 2022 Updated 4 Aug 2024

A buffer overflow in Trusted Firmware M allows attackers to overwrite stack memory, potentially leading to code execution or privilege escalation.

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

What is CVE-2021-43619?

CVE-2021-43619 is a high-severity memory corruption vulnerability in n/a, published on 1 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Trusted Firmware M 1.4.x through 1.4.1 has a buffer overflow issue in the Firmware Update partition. In the IPC model, a psa_fwu_write caller from SPE or NSPE can overwrite stack memory locations.

Weakness: CWE-120

Which versions are affected by CVE-2021-43619?

It affects 1 product.

Products include Trustedfirmware Trusted Firmware-M.

How do I fix CVE-2021-43619?

No fix has been published for CVE-2021-43619 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-2021-43619 being exploited?

There is no known exploitation of CVE-2021-43619 in the wild and no public exploit code.

Sources

Also known as GHSA-w8p4-6wv2-jvj3.