In Eclipse Mosquito, versions from 2.0.0 through 2.0.18, if a Mosquitto broker is configured to create an outgoing bridge connection, and that bridge connection has an incoming topic configured that makes use of topic remapping, then if the remote connection sends a crafted PUBLISH packet to the broker a double free will occur with a subsequent crash of the broker.

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7441-1 advisory.

    It was discovered that Eclipse Mosquitto client incorrectly handled memory when receiving a SUBACK packet.
    An attacker with a malicious broker could possibly use this issue to execute arbitrary code or cause a     denial of service. (CVE-2024-10525)

    Xiangpu Song discovered that Eclipse Mosquitto broker did not properly manage memory under certain     circumstances. A malicious client with a remote connection could possibly use this issue to cause the     broker to crash resulting in a denial of service, or another unspecified impact. This issue only affected     Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-3935)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In Eclipse Mosquito, versions from 2.0.0 through 2.0.18, if a Mosquitto broker is configured to create an     outgoing bridge connection, and that bridge connection has an incoming topic configured that makes use of     topic remapping, then if the remote connection sends a crafted PUBLISH packet to the broker a double free     will occur with a subsequent crash of the broker. (CVE-2024-3935)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4059 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4059-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                          Abhijith PA     February 20, 2025                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : mosquitto     Version        : 2.0.11-1+deb11u2     CVE ID         : CVE-2024-3935 CVE-2024-10525


    The following vulnerabilities have been discovered in the package     mosquitto, MQTT message broker.

    CVE-2024-3935

        If a Mosquitto broker is configured to create an outgoing bridge         connection, and that bridge connection has an incoming topic         configured that makes use of topic remapping, then if the remote         connection sends a crafted PUBLISH packet to the broker a double         free will occur with a subsequent crash of the broker.


    CVE-2024-10525

        If a malicious broker sends a crafted SUBACK packet with no reason         codes, a client using libmosquitto may make out of bounds memory         access when acting in its on_subscribe callback. This affects the         mosquitto_sub and mosquitto_rr clients.


    For Debian 11 bullseye, these problems have been fixed in version     2.0.11-1+deb11u2.

    We recommend that you upgrade your mosquitto packages.

    For the detailed security status of mosquitto please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/mosquitto

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

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

ID	Name	Product	Family	Severity
234681	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : Eclipse Mosquitto vulnerabilities (USN-7441-1)	Nessus	Ubuntu Local Security Checks	high
228708	Linux Distros Unpatched Vulnerability : CVE-2024-3935	Nessus	Misc.	medium
216526	Debian dla-4059 : libmosquitto-dev - security update	Nessus	Debian Local Security Checks	high

Detections

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CVE-2024-3935

medium

Tenable Plugins

high

medium

high