CVE-2023-28366

El intermediario en Eclipse Mosquitto 1.3.2 hasta 2.x anterior a 2.0.16 tiene una pérdida de memoria de la que se puede abusar de forma remota cuando un cliente envía muchos mensajes QoS 2 con ID de mensajes duplicados y no responde a los comandos PUBREC. Esto ocurre debido a un mal manejo de EAGAIN desde la función de envío de libc.

A memory leak vulnerability was found in Eclipse Mosquitto. This issue is triggered by malicious initial packets or certain client actions and may allow a remote attacker to the deplete system resources causing memory exhaustion, leading to a disruption in services and a denial of service condition.

Kathrin Kleinhammer discovered that Mosquitto incorrectly handled certain inputs. If a user or an automated system were provided with a specially crafted input, a remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS. Zhanxiang Song discovered that Mosquitto incorrectly handled certain inputs. If a user or an automated system were provided with a specially crafted input, a remote attacker could possibly use this issue to cause an authorisation bypass. This issue only affected Ubuntu 22.04 LTS and Ubuntu 23.04.