CVE-2023-33657 Use after free in n/a
An attacker can cause a denial of service in NanoMQ by triggering a use-after-free vulnerability in the MQTT message handling logic.
- 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-2023-33657?
CVE-2023-33657 is a high-severity use after free vulnerability in n/a, published on 8 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A use-after-free vulnerability exists in NanoMQ 0.17.2. The vulnerability can be triggered by calling the function nni_mqtt_msg_get_publish_property() in the file mqtt_msg.c. This vulnerability is caused by improper data tracing, and an attacker could exploit it to cause a denial of service attack.
Weakness: CWE-416
Which versions are affected by CVE-2023-33657?
It affects 1 product.
Products include Emqx Nanomq.
How do I fix CVE-2023-33657?
No fix has been published for CVE-2023-33657 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2023-33657 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-33657 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-crqc-c8fj-8qjx.