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CVE-2023-28366

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Date: August 31, 2023

The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.

Language: C

Severity Score

Related Resources (11)

https://mosquitto.org/blog/2023/08/version-2-0-16-released/
https://security-tracker.debian.org/tracker/CVE-2023-28366
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJ2FMBGVVQEQWTTQB7YLKTAHMX2UM66X/
https://github.com/eclipse/mosquitto/compare/v2.0.15...v2.0.16
https://security.gentoo.org/glsa/202401-09
https://nvd.nist.gov/vuln/detail/CVE-2023-28366
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KJ2FMBGVVQEQWTTQB7YLKTAHMX2UM66X/
https://www.debian.org/security/2023/dsa-5511
https://github.com/eclipse/mosquitto/commit/6113eac95a9df634fbc858be542c4a0456bfe7b9
https://www.compass-security.com/fileadmin/Research/Advisories/2023_02_CSNC-2023-001_Eclipse_Mosquitto_Memory_Leak.txt
https://www.mend.io/vulnerability-database/CVE-2023-28366

Severity Score

Weakness Type (CWE)

Missing Release of Memory after Effective Lifetime

CWE-401

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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