Double free in Eclipse Mosquitto - CVE-2024-3935

Vulnerability identifier: #VU100208

CSH Severity: Medium

CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-3935

CWE-ID: CWE-415

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a double free error when 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. A remote attacker can send specially crafted PUBLISH packet to the application and perform a denial of service (DoS) attack.

Eclipse Mosquitto
Ubuntu
openEuler
python-mosquitto (Ubuntu package)
libmosquittopp0 (Ubuntu package)
libmosquitto0 (Ubuntu package)
mosquitto-clients (Ubuntu package)
mosquitto (Ubuntu package)
libmosquittopp1 (Ubuntu package)
libmosquitto1 (Ubuntu package)
mosquitto-debuginfo
mosquitto-devel
mosquitto-debugsource
mosquitto

Install updates from vendor's website.

Eclipse Mosquitto - update to 2.0.19
python-mosquitto (Ubuntu package) - update to Ubuntu Pro
libmosquittopp0 (Ubuntu package) - update to Ubuntu Pro
libmosquitto0 (Ubuntu package) - update to Ubuntu Pro
mosquitto-clients (Ubuntu package) - addressed in versions Ubuntu Pro, 2.0.11-1ubuntu1.2
mosquitto (Ubuntu package) - addressed in versions Ubuntu Pro, 2.0.11-1ubuntu1.2
libmosquittopp1 (Ubuntu package) - addressed in versions Ubuntu Pro, 2.0.11-1ubuntu1.2
libmosquitto1 (Ubuntu package) - addressed in versions Ubuntu Pro, 2.0.11-1ubuntu1.2
mosquitto-debuginfo - update to 2.0.20-1
mosquitto-devel - update to 2.0.20-1
mosquitto-debugsource - update to 2.0.20-1
mosquitto - update to 2.0.20-1

• https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/197
• https://mosquitto.org/blog/2024/10/version-2-0-19-released/
• https://github.com/eclipse-mosquitto/mosquitto/commit/ae7a804dadac8f2aaedb24336df8496a9680fda9

• Multiple vulnerabilities in Eclipse Mosquitto
• openEuler 22.03 LTS SP4 update for mosquitto
• openEuler 24.03 LTS update for mosquitto
• openEuler 22.03 LTS SP1 update for mosquitto
• openEuler 22.03 LTS SP3 update for mosquitto
• Ubuntu update for mosquitto