| Name | CVE-2021-34434 |
| Description | In Eclipse Mosquitto versions 2.0 to 2.0.11, when using the dynamic security plugin, if the ability for a client to make subscriptions on a topic is revoked when a durable client is offline, then existing subscriptions for that client are not revoked. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 993400 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| mosquitto (PTS) | buster, buster (security) | 1.5.7-1+deb10u1 | fixed |
| bullseye | 2.0.11-1 | vulnerable | |
| bookworm, sid | 2.0.11-1.2 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| mosquitto | source | stretch | (not affected) | |||
| mosquitto | source | buster | (not affected) | |||
| mosquitto | source | (unstable) | (unfixed) | 993400 |
[bookworm] - mosquitto <no-dsa> (Minor issue)
[bullseye] - mosquitto <no-dsa> (Minor issue)
[buster] - mosquitto <not-affected> (Vulnerable code introduced later)
[stretch] - mosquitto <not-affected> (Vulnerable code introduced later)
https://bugs.eclipse.org/bugs/show_bug.cgi?id=575324
https://gitlab.eclipse.org/eclipsefdn/helpdesk/-/issues/638