CVE-2018-18439 Memory corruption in n/a

Critical 9.8 Published 20 Nov 2018 Updated 5 Aug 2024

Remote attackers can execute arbitrary code via malicious TFTP traffic or local attackers via crafted kernel images in U-Boot.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-18439?

CVE-2018-18439 is a critical memory corruption vulnerability in n/a, published on 20 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

DENX U-Boot through 2018.09-rc1 has a remotely exploitable buffer overflow via a malicious TFTP server because TFTP traffic is mishandled. Also, local exploitation can occur via a crafted kernel image.

Weakness: CWE-119

Which versions are affected by CVE-2018-18439?

It affects 1 product.

Products include Denx U-Boot.

How do I fix CVE-2018-18439?

No fix has been published for CVE-2018-18439 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-2018-18439 being exploited?

There is no known exploitation of CVE-2018-18439 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2018-18439, GHSA-vqxq-jmxf-f53r, UBUNTU-CVE-2018-18439.