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CVE-2021-34434

Date: August 29, 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.

Severity Score

Related Resources (10)

https://people.canonical.com/~ubuntu-security/cve/CVE-2021-34434
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RLUUM52Y6AEICPXPSRRXC6OBY4H5XKW7/
https://security-tracker.debian.org/tracker/CVE-2021-34434
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K4WWGVF5BUFPYPCFUPPP4KRIYI5OTJN2/
https://www.debian.org/security/2023/dsa-5511
https://nvd.nist.gov/vuln/detail/CVE-2021-34434
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%40lists.fedoraproject.org/message/RLUUM52Y6AEICPXPSRRXC6OBY4H5XKW7/
https://www.mend.io/vulnerability-database/CVE-2021-34434

Severity Score

Weakness Type (CWE)

Improper Authorization

CWE-285

Incorrect Authorization

CWE-863

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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