[USN-4023-1] Mosquitto vulnerabilities

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Ubuntu Security Notice USN-4023-1
June 20, 2019

mosquitto vulnerabilities
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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