CVE-2022-3742 Memory corruption in Notebook

Medium 6.7 Published 23 Aug 2023 Updated 9 Oct 2024

A local attacker with elevated privileges can execute arbitrary code in Lenovo notebook BIOS due to improper buffer validation.

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-2022-3742?

CVE-2022-3742 is a medium-severity memory corruption vulnerability in Lenovo Notebook, published on 23 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A potential vulnerability was discovered in LCFC BIOS for some Lenovo consumer notebook models that could allow a local attacker with elevated privileges to execute arbitrary code due to improper buffer validation.

Weakness: CWE-120

Which versions are affected by CVE-2022-3742?

It affects 87 products.

Products include Lenovo Ideapad 1-14ijl7 Firmware, Lenovo Ideapad 1-15ijl7 Firmware, Lenovo Ideapad 1 14iau7 Firmware, Lenovo Ideapad 1 14igl7 Firmware, Lenovo Ideapad 1 15iau7 Firmware, Lenovo Ideapad 1 15igl7 Firmware and 81 more.

How do I fix CVE-2022-3742?

No fix has been published for CVE-2022-3742 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-2022-3742 being exploited?

There is no known exploitation of CVE-2022-3742 in the wild and no public exploit code.

Sources

Also known as GHSA-4p5v-vvr2-vjmq.