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CVE-2023-5632

Unconditionally adding an event to the epoll causes excessive CPU consumption

Published: 10/18/2023 Last updated: 9/13/2024 Reserved: 10/18/2023

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

CNA assigner: eclipse (e51fbebd-6053-4e49-959f-1b94eeb69a2c) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 7.5 High CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Opam packages affected (1)

conf-libmosquitto

Products affected (1)

Product Vendor Version
Mosquitto Eclipse n/a

References (4)

Credits (1)