UBUNTU-CVE-2021-34431

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.

References

Affected packages

Ubuntu:Pro:20.04:LTS / mosquitto

Package

Name: mosquitto
Purl: pkg:deb/ubuntu/mosquitto@1.6.9-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.6.9-1ubuntu0.1~esm1

Affected versions

1.*

1.6.6-1

1.6.7-1

1.6.8-1

1.6.8-2

1.6.9-1~build1

1.6.9-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1.6.9-1ubuntu0.1~esm1",
            "binary_name": "libmosquitto-dev"
        },
        {
            "binary_version": "1.6.9-1ubuntu0.1~esm1",
            "binary_name": "libmosquitto1"
        },
        {
            "binary_version": "1.6.9-1ubuntu0.1~esm1",
            "binary_name": "libmosquittopp-dev"
        },
        {
            "binary_version": "1.6.9-1ubuntu0.1~esm1",
            "binary_name": "libmosquittopp1"
        },
        {
            "binary_version": "1.6.9-1ubuntu0.1~esm1",
            "binary_name": "mosquitto"
        },
        {
            "binary_version": "1.6.9-1ubuntu0.1~esm1",
            "binary_name": "mosquitto-clients"
        },
        {
            "binary_version": "1.6.9-1ubuntu0.1~esm1",
            "binary_name": "mosquitto-dev"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}