CVE-2018-18440 Memory corruption in n/a

High 7.8 Published 20 Nov 2018 Updated 5 Aug 2024

A local attacker can exploit a buffer overflow in U-Boot via a crafted kernel image to execute arbitrary code or escalate privileges.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-18440?

CVE-2018-18440 is a high-severity memory corruption vulnerability in n/a, published on 20 Nov 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

DENX U-Boot through 2018.09-rc1 has a locally exploitable buffer overflow via a crafted kernel image because filesystem loading is mishandled.

Weakness: CWE-119

Which versions are affected by CVE-2018-18440?

It affects 1 product.

Products include Denx U-Boot.

How do I fix CVE-2018-18440?

No fix has been published for CVE-2018-18440 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-2018-18440 being exploited?

There is no known exploitation of CVE-2018-18440 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2018-18440, GHSA-2q5w-j6vh-gmvc, UBUNTU-CVE-2018-18440.