CVE-2021-34268 Denial of service in n/a

Medium 4.6 Published 22 Jul 2021 Updated 4 Aug 2024

A malformed USB device packet can cause a denial of service in STM32Cube Middleware, affecting embedded systems using this library.

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-2021-34268?

CVE-2021-34268 is a medium-severity denial of service vulnerability in n/a, published on 22 Jul 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue in the USBH_ParseDevDesc() function of STMicroelectronics STM32Cube Middleware v1.8.0 and below causes a denial of service (DOS) via a malformed USB device packet.

Which versions are affected by CVE-2021-34268?

It affects 1 product.

Products include St Stm32cube Middleware.

How do I fix CVE-2021-34268?

No fix has been published for CVE-2021-34268 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2021-34268 being exploited?

There is no known exploitation of CVE-2021-34268 in the wild and no public exploit code.

Sources

Also known as GHSA-xfw8-5222-p9q7.