Vulnerability CVE-2023-28366
Published: 2023-09-01

Description:
The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.

 References:
https://github.com/eclipse/mosquitto/commit/6113eac95a9df634fbc858be542c4a0456bfe7b9
https://www.compass-security.com/fileadmin/Research/Advisories/2023_02_CSNC-2023-001_Eclipse_Mosquitto_Memory_Leak.txt
https://github.com/eclipse/mosquitto/compare/v2.0.15...v2.0.16
https://mosquitto.org/blog/2023/08/version-2-0-16-released/
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