| Name | CVE-2023-28366 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-5511-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| mosquitto (PTS) | bullseye | 2.0.11-1+deb11u1 | fixed |
| bullseye (security) | 2.0.11-1+deb11u2 | fixed |
| bookworm, bookworm (security) | 2.0.11-1.2+deb12u1 | fixed |
| sid, trixie | 2.0.21-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[buster] - mosquitto <ignored> (Minor memory leak which requires rewrite of core functions)
https://mosquitto.org/blog/2023/08/version-2-0-16-released/
https://github.com/eclipse/mosquitto/commit/6113eac95a9df634fbc858be542c4a0456bfe7b9 (v2.0.16)
Regression fix: https://github.com/eclipse/mosquitto/commit/bfb373d774d8530e8d6620776304a3e0b0201793
Regression fix: https://github.com/eclipse/mosquitto/commit/28d96d8ebca9f6bdb7f272f1095760953e62d828