CVE-2021-41039

Description

In versions 1.6 to 2.0.11 of Eclipse Mosquitto, an MQTT v5 client connecting with a large number of user-property properties could cause excessive CPU usage, leading to a loss of performance and possible denial of service.

CVSS Metrics

• v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
• v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 0.25%• Percentile: 48%

Techniques & Countermeasures

• CWE-1050•Excessive Platform Resource Consumption within a Loop

  The product has a loop body or loop condition that contains a control element that directly or indirectly consumes platform resources, e.g. messaging, sessions, locks, or file descriptors.

Affected Systems

• eclipse•mosquitto

  ≥ 1.6, ≤ 2.0.11

• the eclipse foundation•eclipse mosquitto

  ≥ 1.6, < unspecified | ≥ unspecified, ≤ 2.0.11

References (2)

• https://bugs.eclipse.org/bugs/show_bug.cgi?id=575314
• https://www.debian.org/security/2023/dsa-5511