==========================================================================
Ubuntu Security Notice USN-4023-1
June 20, 2019
mosquitto vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 18.10
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
Summary:
Several security issues were fixed in Mosquitto.
Software Description:
– mosquitto: MQTT version 3.1/3.1.1 compatible message broker
Details:
It was discovered that Mosquitto broker incorrectly handled certain specially
crafted input and network packets. A remote attacker could use this to cause a
denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.10:
libmosquitto1 1.4.15-2ubuntu0.18.10.3
libmosquittopp1 1.4.15-2ubuntu0.18.10.3
mosquitto 1.4.15-2ubuntu0.18.10.3
mosquitto-clients 1.4.15-2ubuntu0.18.10.3
Ubuntu 18.04 LTS:
libmosquitto1 1.4.15-2ubuntu0.18.04.3
libmosquittopp1 1.4.15-2ubuntu0.18.04.3
mosquitto 1.4.15-2ubuntu0.18.04.3
mosquitto-clients 1.4.15-2ubuntu0.18.04.3
Ubuntu 16.04 LTS:
libmosquitto1 1.4.8-1ubuntu0.16.04.7
libmosquittopp1 1.4.8-1ubuntu0.16.04.7
mosquitto 1.4.8-1ubuntu0.16.04.7
mosquitto-clients 1.4.8-1ubuntu0.16.04.7
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4023-1
CVE-2017-7653, CVE-2017-7654
Package Information:
https://launchpad.net/ubuntu/+source/mosquitto/1.4.15-2ubuntu0.18.10.3
https://launchpad.net/ubuntu/+source/mosquitto/1.4.15-2ubuntu0.18.04.3
https://launchpad.net/ubuntu/+source/mosquitto/1.4.8-1ubuntu0.16.04.7
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