cve/2019/CVE-2019-16754.md

### [CVE-2019-16754](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16754)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

RIOT 2019.07 contains a NULL pointer dereference in the MQTT-SN implementation (asymcute), potentially allowing an attacker to crash a network node running RIOT. This requires spoofing an MQTT server response. To do so, the attacker needs to know the MQTT MsgID of a pending MQTT protocol message and the ephemeral port used by RIOT's MQTT implementation. Additionally, the server IP address is required for spoofing the packet.

### POC

#### Reference
- https://github.com/RIOT-OS/RIOT/pull/12293

#### Github
No PoCs found on GitHub currently.