CVE-2023-43567 Memory corruption in Desktop BIOS

Medium 6.7 Published 8 Nov 2023 Updated 12 Sep 2024

A buffer overflow in Lenovo Desktop BIOS allows local attackers with elevated privileges to execute arbitrary code.

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

What is CVE-2023-43567?

CVE-2023-43567 is a medium-severity memory corruption vulnerability in Lenovo Desktop BIOS, published on 8 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A buffer overflow was reported in the LemSecureBootForceKey module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to execute arbitrary code.

Weakness: CWE-120

Which versions are affected by CVE-2023-43567?

It affects 111 products.

Products include Lenovo Ideacentre 3-07ada05 Firmware, Lenovo Ideacentre 3-07imb05 Firmware, Lenovo Ideacentre 5-14acn6 Firmware, Lenovo Ideacentre 5-14imb05 Firmware, Lenovo Ideacentre 5-14iob6 Firmware, Lenovo Ideacentre 5 14iab7 Firmware and 105 more.

How do I fix CVE-2023-43567?

No fix has been published for CVE-2023-43567 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-2023-43567 being exploited?

There is no known exploitation of CVE-2023-43567 in the wild and no public exploit code.

Sources

Also known as GHSA-2gcw-vfw4-7268.