CVE-2023-5632 HIGH

CVE-2023-5632: Unconditionally adding an event to the epoll causes excessive CPU consumption

Vendor Eclipse
Product Mosquitto
Weakness CWE-834
Published October 18, 2023
Last update September 13, 2024
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6

Key dates

02Disclosure timeline

October 18, 2023 CVE published
September 13, 2024 Record updated