CVE-2022-3432 Security feature bypass in BIOS
An attacker with elevated privileges can bypass Secure Boot by modifying NVRAM variables via a leftover manufacturing driver in Lenovo BIOS.
- 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-2022-3432?
CVE-2022-3432 is a medium-severity vulnerability in Lenovo BIOS, published on 23 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A potential vulnerability in a driver used during manufacturing process on the Ideapad Y700-14ISK that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable.
Weakness: CWE-276
Which versions are affected by CVE-2022-3432?
It affects 1 product.
Products include Lenovo Ideapad Y700-14isk Firmware.
How do I fix CVE-2022-3432?
No fix has been published for CVE-2022-3432 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-3432 being exploited?
There is no known exploitation of CVE-2022-3432 in the wild and no public exploit code.
Sources
Also known as GHSA-w8r4-jpw4-3xhr.