CVE-2021-34434
First published: Mon Aug 30 2021(Updated: )
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.
Credit: emo@eclipse.org emo@eclipse.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Eclipse Mosquitto | >=2.0.0<=2.0.11 | |
| Fedoraproject Fedora | =34 | |
| Fedoraproject Fedora | =35 | |
| debian/mosquitto | <=2.0.11-1<=2.0.11-1.2 | 1.5.7-1+deb10u1 2.0.11-1+deb11u1 2.0.11-1.2+deb12u1 2.0.18-1 |
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Reference Links
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=575324
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/K4WWGVF5BUFPYPCFUPPP4KRIYI5OTJN2/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RLUUM52Y6AEICPXPSRRXC6OBY4H5XKW7/
- https://www.debian.org/security/2023/dsa-5511
- https://security-tracker.debian.org/tracker/CVE-2021-34434
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34434
- https://salsa.debian.org/debian-iot-team/mosquitto/-/merge_requests/
- https://github.com/eclipse/mosquitto/issues/2688#issuecomment-1626357713
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993400
- https://gitlab.eclipse.org/eclipsefdn/helpdesk/-/issues/638
- https://github.com/eclipse/mosquitto/commit/32af599c81e63fa38e834b8f1c1f108c49328e95
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K4WWGVF5BUFPYPCFUPPP4KRIYI5OTJN2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RLUUM52Y6AEICPXPSRRXC6OBY4H5XKW7/
Frequently Asked Questions
What is CVE-2021-34434?
CVE-2021-34434 is a vulnerability in Eclipse Mosquitto versions 2.0 to 2.0.11.
What is the severity of CVE-2021-34434?
The severity of CVE-2021-34434 is high with a severity value of 5.3.
How does CVE-2021-34434 affect Eclipse Mosquitto?
CVE-2021-34434 affects Eclipse Mosquitto versions 2.0 to 2.0.11.
Is Fedora affected by CVE-2021-34434?
Yes, Fedora versions 34 and 35 are affected by CVE-2021-34434.
How can I fix CVE-2021-34434?
To fix CVE-2021-34434, you should update to version 2.0.18 of the Mosquitto package.
- collector/nvd-api
- collector/debian-bugs
- alias/CVE-2021-34434
- collector/security-tracker-debian
- collector/nvd-index
- agent/weakness
- agent/author
- agent/type
- agent/event
- agent/description
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/references
- agent/severity
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/eclipse
- canonical/eclipse mosquitto
- version/eclipse mosquitto/2.0.0
- version/eclipse mosquitto/2.0.11
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/34
- version/fedoraproject fedora/35
- package-manager/debian