CVE-2022-33967 Memory corruption in U-Boot
Heap-based buffer overflow in U-Boot's squashfs implementation allows attackers to execute arbitrary code or cause denial of service via crafted images.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2022-33967?
CVE-2022-33967 is a high-severity memory corruption vulnerability in DENX Software Engineering U-Boot, published on 20 Jul 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a heap-based buffer overflow vulnerability due to a defect in the metadata reading process. Loading a specially crafted squashfs image may lead to a denial-of-service (DoS) condition or arbitrary code execution.
Weakness: CWE-787
Which versions are affected by CVE-2022-33967?
It affects 1 product.
Products include Denx U-Boot.
How do I fix CVE-2022-33967?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-33967 being exploited?
There is no known exploitation of CVE-2022-33967 in the wild and no public exploit code.
Other vulnerabilities in DENX Software Engineering U-Boot
Sources
Also known as DEBIAN-CVE-2022-33967, GHSA-m6jw-rg4f-jw25, OESA-2022-1800, UBUNTU-CVE-2022-33967.