CVE-2024-3935 Eclipse Mosquito: Double free vulnerability

What is CVE-2024-3935?

CVE-2024-3935 is a medium-severity use after free vulnerability in Eclipse Foundation mosquitto, published on 30 Oct 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-415

Which versions are affected by CVE-2024-3935?

It affects 1 product.

Products include Eclipse Mosquitto.

How do I fix CVE-2024-3935?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2024-3935 being exploited?

There is no known exploitation of CVE-2024-3935 in the wild and no public exploit code.

Other vulnerabilities in Eclipse Foundation mosquitto

• CVE-2018-12550 Auth bypass in Eclipse Mosquitto High 8.1
• CVE-2018-12551 Auth bypass in Eclipse Mosquitto High 8.1
• CVE-2023-5632 Unconditionally adding an event to the epoll causes excessive CPU consumption High 7.5
• CVE-2023-28366 Denial of service in n/a High 7.5
• CVE-2021-41039 Denial of service in Eclipse Mosquitto High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2024-3935, GHSA-r5mw-c5jc-r788, ROOT-OS-ALPINE-318-CVE-2024-3935, ROOT-OS-ALPINE-319-CVE-2024-3935, ROOT-OS-ALPINE-320-CVE-2024-3935, UBUNTU-CVE-2024-3935 and 1 more.