CVE-2021-34434

Advisory lineage Upstream: 0 Downstream: 5
Modified
Published: 30 Aug 2021, 00:00
Last modified:04 Aug 2024, 00:12

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
5.3 MEDIUM
v3.1 (nvd)
EPSS Score
0.36% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

30 Aug 2021, 00:00
Published
Vulnerability first disclosed
04 Aug 2024, 00:12
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.36%• Percentile: 59%

Techniques & Countermeasures

  • CWE-863•Incorrect Authorization

    The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

  • CWE-285•Improper Authorization

    The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

Affected Systems

  • eclipse•mosquitto

    ≥ 2.0.0, ≤ 2.0.11

  • fedoraproject•fedora

    34 | 35

  • the eclipse foundation•eclipse mosquitto

    ≥ 2.0, < unspecified | ≥ unspecified, ≤ 2.0.11

References (4)