In Eclipse Mosquitto version 2.0.0 to 2.0.9, if an authenticated client that had connected with MQTT v5 sent a crafted CONNACK message to the broker, a NULL pointer dereference would occur.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mosquitto | Eclipse | 2.0.0 (including) | 2.0.9 (including) |
| Mosquitto | Ubuntu | bionic | * |
| Mosquitto | Ubuntu | groovy | * |
| Mosquitto | Ubuntu | hirsute | * |
| Mosquitto | Ubuntu | impish | * |
| Mosquitto | Ubuntu | kinetic | * |
| Mosquitto | Ubuntu | trusty | * |
| Mosquitto | Ubuntu | upstream | * |
| Mosquitto | Ubuntu | xenial | * |