CVE-2021-45933 Memory corruption in n/a
A heap-based buffer overflow in wolfMQTT allows attackers to execute arbitrary code or cause denial of service via crafted MQTT packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-45933?
CVE-2021-45933 is a medium-severity memory corruption vulnerability in n/a, published on 31 Dec 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow (8 bytes) in MqttDecode_Publish (called from MqttClient_DecodePacket and MqttClient_HandlePacket).
Weakness: CWE-787
Which versions are affected by CVE-2021-45933?
It affects 1 product.
Products include Wolfssl Wolfmqtt.
How do I fix CVE-2021-45933?
No fix has been published for CVE-2021-45933 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-2021-45933 being exploited?
There is no known exploitation of CVE-2021-45933 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-66j2-rj87-qgfj.