CVE-2021-34123 Memory corruption in n/a

Critical 9.8 Published 18 Jul 2023 Updated 28 Oct 2024

A stack-buffer-overflow in atasm allows attackers to execute arbitrary code via a crafted file.

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-2021-34123?

CVE-2021-34123 is a critical memory corruption vulnerability in n/a, published on 18 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered on atasm, version 1.09. A stack-buffer-overflow vulnerability in function aprintf() in asm.c allows attackers to execute arbitrary code on the system via a crafted file.

Weakness: CWE-787

Which versions are affected by CVE-2021-34123?

It affects 1 product.

Products include Atasm Project Atasm.

How do I fix CVE-2021-34123?

No fix has been published for CVE-2021-34123 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-2021-34123 being exploited?

There is no known exploitation of CVE-2021-34123 in the wild and no public exploit code.

Sources

Also known as GHSA-vvwm-9cq7-j8mv.