| Name | CVE-2023-5632 |
| Description | In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6 |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
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.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| mosquitto | source | buster | (not affected) | |||
| mosquitto | source | (unstable) | 2.0.7-1 |
[buster] - mosquitto <not-affected> (The vulnerable code was introduced later)
https://github.com/eclipse/mosquitto/pull/2053
https://github.com/eclipse/mosquitto/commit/18bad1ff32435e523d7507e9b2ce0010124a8f2d (v2.0.6)