CVE-2023-29995 Memory corruption in n/a

High 7.5 Published 4 May 2023 Updated 29 Jan 2025

A heap overflow in NanoMQ's MQTT parser 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-2023-29995?

CVE-2023-29995 is a high-severity memory corruption vulnerability in n/a, published on 4 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In NanoMQ v0.15.0-0, a Heap overflow occurs in copyn_utf8_str function of mqtt_parser.c

Weakness: CWE-787

Which versions are affected by CVE-2023-29995?

It affects 1 product.

Products include Emqx Nanomq.

How do I fix CVE-2023-29995?

No fix has been published for CVE-2023-29995 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-2023-29995 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-29995 exists.

Sources

Also known as GHSA-6h45-p2j6-r9ph.