CVE-2019-12208 Memory corruption in n/a

Critical 9.8 Published 20 May 2019 Updated 4 Aug 2024

A heap-based buffer overflow in the njs JavaScript engine used by NGINX allows attackers to execute arbitrary code or cause a denial of service.

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-2019-12208?

CVE-2019-12208 is a critical memory corruption vulnerability in n/a, published on 20 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

njs through 0.3.1, used in NGINX, has a heap-based buffer overflow in njs_function_native_call in njs/njs_function.c.

Weakness: CWE-787

Which versions are affected by CVE-2019-12208?

It affects 1 product.

Products include F5 Njs.

How do I fix CVE-2019-12208?

No fix has been published for CVE-2019-12208 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-2019-12208 being exploited?

There is no known exploitation of CVE-2019-12208 in the wild and no public exploit code.

Sources

Also known as GHSA-v4xr-hhgm-m4r2.