openSUSE 16 Security Update : mosquitto (openSUSE-SU-2026:20260-1)

high Nessus Plugin ID 299946

Synopsis

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

Description

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20260-1 advisory.

Changes in mosquitto:

- update to 2.0.23 (boo#1258671)
* Fix handling of disconnected sessions for `per_listener_settings true`
* Check return values of openssl *_get_ex_data() and
*_set_ex_data() to prevent possible crash. This could occur only in extremely unlikely situations
* Check return value of openssl ASN1_string_[get0_]data() functions for NULL. This prevents a crash in case of incorrect certificate handling in openssl
* Fix potential crash on startup if a malicious/corrupt persistence file from mosquitto 1.5 or earlier is loaded
* Limit auto_id_prefix to 50 characters

- Update to version 2.0.22 Broker
* Bridge: Fix idle_timeout never occurring for lazy bridges.
* Fix case where max_queued_messages = 0 was not treated as unlimited.
* Fix --version exit code and output.
* Fix crash on receiving a $CONTROL message over a bridge, if per_listener_settings is set true and the bridge is carrying out topic remapping.
* Fix incorrect reference clock being selected on startup on Linux. Closes #3238.
* Fix reporting of client disconnections being incorrectly attributed to out of memory.
* Fix compilation when using WITH_OLD_KEEPALIVE.
* Fix problems with secure websockets.
* Fix crash on exit when using WITH_EPOLL=no.
* Fix clients being incorrectly expired when they have keepalive == max_keepalive. Closes #3226, #3286.
Dynamic security plugin
* Fix mismatch memory free when saving config which caused memory tracking to be incorrect.
Client library
* Fix C++ symbols being removed when compiled with link time optimisation.
* TLS error handling was incorrectly setting a protocol error for non-TLS errors. This would cause the mosquitto_loop_start() thread to exit if no broker was available on the first connection attempt. This has been fixed. Closes #3258.
* Fix linker errors on some architectures using cmake.

- Update to version 2.0.21 Broker
* Fix clients sending a RESERVED packet not being quickly disconnected.
* Fix bind_interface producing an error when used with an interface that has an IPv6 link-local address and no other IPv6 addresses.
* Fix mismatched wrapped/unwrapped memory alloc/free in properties.
* Fix allow_anonymous false not being applied in local only mode.
* Add retain_expiry_interval option to fix expired retained message not being removed from memory if they are not subscribed to.
* Produce an error if invalid combinations of cafile/capath/certfile/keyfile are used.
* Backport keepalive checking from develop to fix problems in current implementation.
Client library
* Fix potential deadlock in mosquitto_sub if -W is used.
Apps
* mosquitto_ctrl dynsec now also allows -i to specify a clientid as well as -c. This matches the documentation which states -i.
Tests
* Fix 08-ssl-connect-cert-auth-expired and 08-ssl-connect-cert-auth-revoked tests when under load.

- systemd service: Wait till the network got setup to avoid startup failure.

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

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.

Plugin Details

Severity: High

ID: 299946

File Name: openSUSE-2026-20260-1.nasl

Version: 1.1

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 2/25/2026

Updated: 2/25/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2024-10525

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

CVSS v4

Risk Factor: High

Base Score: 7.2

Threat Score: 5.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:libmosquittopp1, p-cpe:/a:novell:opensuse:libmosquitto1, p-cpe:/a:novell:opensuse:mosquitto-devel, p-cpe:/a:novell:opensuse:mosquitto-clients, p-cpe:/a:novell:opensuse:mosquitto

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/23/2026

Vulnerability Publication Date: 10/30/2024

Reference Information

CVE: CVE-2024-10525, CVE-2024-3935

Detections

Analytics