CVE-2021-34434

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

References

https://bugs.eclipse.org/bugs/show_bug.cgi?id=575324

https://lists.fedoraproject.org/archives/list/[email protected]/message/K4WWGVF5BUFPYPCFUPPP4KRIYI5OTJN2/

https://lists.fedoraproject.org/archives/list/[email protected]/message/RLUUM52Y6AEICPXPSRRXC6OBY4H5XKW7/

Details

Source: MITRE

Published: 2021-08-30

Updated: 2021-09-24

Type: CWE-863

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Impact Score: 1.4

Exploitability Score: 3.9

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:* versions from 2.0.0 to 2.0.11 (inclusive)

Configuration 2

OR

cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*