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Ubuntu 20.04 ESM / 22.04 LTS / 23.04 : Mosquitto vulnerabilities (USN-6492-1)

medium Nessus Plugin ID 186038

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 20.04 ESM / 22.04 LTS / 23.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6492-1 advisory.

 - In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker. (CVE-2021-34431)

 - In Eclipse Mosquitto versions 2.0 to 2.0.11, when using the dynamic security plugin, if the ability for a client to make subscriptions on a topic is revoked when a durable client is offline, then existing subscriptions for that client are not revoked. (CVE-2021-34434)

 - 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. (CVE-2021-41039)

 - In Mosquitto before 2.0.16, excessive memory is allocated based on malicious initial packets that are not CONNECT packets. (CVE-2023-0809)

 - 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.
 (CVE-2023-28366)

 - In Mosquitto before 2.0.16, a memory leak occurs when clients send v5 CONNECT packets with a will message that contains invalid property types. (CVE-2023-3592)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-6492-1

Plugin Details

Severity: Medium

ID: 186038

File Name: ubuntu_USN-6492-1.nasl

Version: 1.0

Type: local

Agent: unix

Published: 11/21/2023

Updated: 11/21/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2021-34434

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:esm, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:23.04, p-cpe:/a:canonical:ubuntu_linux:libmosquitto-dev, p-cpe:/a:canonical:ubuntu_linux:libmosquitto1, p-cpe:/a:canonical:ubuntu_linux:libmosquittopp-dev, p-cpe:/a:canonical:ubuntu_linux:libmosquittopp1, p-cpe:/a:canonical:ubuntu_linux:mosquitto, p-cpe:/a:canonical:ubuntu_linux:mosquitto-clients, p-cpe:/a:canonical:ubuntu_linux:mosquitto-dev

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/21/2023

Vulnerability Publication Date: 7/22/2021

Reference Information

CVE: CVE-2021-34431, CVE-2021-34434, CVE-2021-41039, CVE-2023-0809, CVE-2023-28366, CVE-2023-3592

USN: 6492-1