CVE-2023-4041 Second Stage Gecko Bootloader GBL Parser Buffer Overrun Vulnerability

Critical 9.8 Published 23 Aug 2023 Updated 3 Oct 2024

Attackers can exploit a buffer overflow in the Gecko Bootloader parser to inject code and bypass authentication during firmware updates.

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-2023-4041?

CVE-2023-4041 is a critical memory corruption vulnerability in Silicon Labs Gecko Bootloader, published on 23 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Out-of-bounds Write, Download of Code Without Integrity Check vulnerability in Silicon Labs Gecko Bootloader on ARM (Firmware Update File Parser modules) allows Code Injection, Authentication Bypass.This issue affects "Standalone" and "Application" versions of Gecko Bootloader.

Weakness: CWE-494, CWE-913, CWE-787, CWE-120

Which versions are affected by CVE-2023-4041?

It affects 1 product.

Products include Silabs Gecko Bootloader.

How do I fix CVE-2023-4041?

No fix has been published for CVE-2023-4041 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-2023-4041 being exploited?

There is no known exploitation of CVE-2023-4041 in the wild and no public exploit code.

Sources

Also known as GHSA-hvfc-3xxp-p6hw.