CVE-2023-28366

HIGH

Eclipse Mosquitto 1.3.2-2.0.15 - Memory Leak via QoS 2 Message Handling

Title source: llm

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 (7)

Core 7

Core References

Patch

https://github.com/eclipse/mosquitto/commit/6113eac95a9df634fbc858be542c4a0456bfe7b9

View Patch ZIP pw:eip

Release Notes

https://github.com/eclipse/mosquitto/compare/v2.0.15...v2.0.16

Release Notes

https://mosquitto.org/blog/2023/08/version-2-0-16-released/

Third Party Advisory

https://www.compass-security.com/fileadmin/Research/Advisories/2023_02_CSNC-2023-001_Eclipse_Mosquitto_Memory_Leak.txt

Mailing List, Third Party Advisory vendor-advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJ2FMBGVVQEQWTTQB7YLKTAHMX2UM66X/

Third Party Advisory vendor-advisory

https://www.debian.org/security/2023/dsa-5511

Third Party Advisory vendor-advisory

https://security.gentoo.org/glsa/202401-09

Scores

CVSS v3 7.5

EPSS 0.0111

EPSS Percentile 61.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-401

Status published

Products (1)

eclipse/mosquitto 1.3.2 - 2.0.16

Published Sep 01, 2023

Tracked Since Feb 18, 2026