CVE-2020-25107 Memory corruption in n/a

Critical 9.8 Published 11 Dec 2020 Updated 4 Aug 2024

Missing null termination check in Ethernut Nut/OS DNS implementation allows attackers to cause denial of service or potentially execute code.

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-2020-25107?

CVE-2020-25107 is a critical memory corruption vulnerability in n/a, published on 11 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in the DNS implementation in Ethernut in Nut/OS 5.1. There is no check on whether a domain name has '\0' termination. This may lead to successful Denial-of-Service, and possibly Remote Code Execution.

Weakness: CWE-125

Which versions are affected by CVE-2020-25107?

It affects 1 product.

Products include Ethernut Nut\/Os.

How do I fix CVE-2020-25107?

No fix has been published for CVE-2020-25107 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-2020-25107 being exploited?

There is no known exploitation of CVE-2020-25107 in the wild and no public exploit code.

Sources

Also known as GHSA-64m3-gx4j-jq98.