PT-2023-32224 · Eclipse+1 · Eclipse Mosquitto+1

Przemyslaw Zygmunt + 2 · Published 2023-10-18 · Updated 2025-03-10 · CVE-2023-5632

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Eclipse Mosquito versions 2.0.0 through 2.0.5

Description Establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results in excessive CPU consumption. This could be used by a malicious actor to perform a denial of service type attack.

Recommendations For Eclipse Mosquito versions 2.0.0 through 2.0.5, update to version 2.0.6 to resolve the issue. As a temporary workaround, consider restricting access to the mosquitto server to minimize the risk of exploitation.

Fix

DoS

Weakness Enumeration

CWE-834

Related Identifiers

ALT-PU-2024-12359

ALT-PU-2025-3746

CVE-2023-5632

OESA-2023-1772

OESA-2023-1773

OESA-2023-1774

Affected Products

Alt Linux

Eclipse Mosquitto

References · 42

• https://github.com/eclipse/mosquitto/commit/18bad1ff32435e523d7507e9b2ce0010124a8f2d · Patch
• https://github.com/eclipse/mosquitto/pull/2053 · Patch
• https://bdu.fstec.ru/vul/2024-04213 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-8376 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/671875 · Security Note
• https://osv.dev/vulnerability/CVE-2023-5632 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5632 · Security Note
• https://bdu.fstec.ru/vul/2024-04210 · Security Note
• https://bdu.fstec.ru/vul/2023-05834 · Security Note
• https://bdu.fstec.ru/vul/2024-09881 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-5632 · Security Note
• https://cve.org/CVERecord?id=CVE-2023-5632 · Security Note
• https://errata.altlinux.org/ALT-PU-2025-3746 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-01775 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-5632 · Vendor Advisory