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CVE-2021-34434

Published: 30 August 2021

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.

Priority

Medium

Cvss 3 Severity Score

5.3

Score breakdown

Status

Package Release Status
mosquitto
Launchpad, Ubuntu, Debian
hirsute Ignored
(end of life)
kinetic Ignored
(end of life, was needs-triage)
impish Ignored
(end of life)
bionic Not vulnerable
(code not present)
focal Not vulnerable
(code not present)
mantic Not vulnerable
(2.0.18-1)
trusty Not vulnerable
(code not present)
upstream
Released (2.0.12)
xenial Not vulnerable
(code not present)
jammy
Released (2.0.11-1ubuntu1.1)
lunar
Released (2.0.11-1.2ubuntu0.1)

Severity score breakdown

Parameter Value
Base score 5.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N