[SECURITY] [DLA 1525-1] mosquitto security update

Package : mosquitto
Version : 1.3.4-2+deb8u3
CVE ID : CVE-2017-7653 CVE-2017-7654 CVE-2017-9868

CVE-2017-7653

As invalid UTF-8 strings are not correctly checked, an attacker could
cause a denial of service to other clients by disconnecting
them from the broker with special crafted topics.

CVE-2017-7654

Due to a memory leak unauthenticated clients can send special crafted
CONNECT packets which could cause a denial of service in the broker.

CVE-2017-9868

Due to wrong file permissions local users could obtain topic
information from the mosquitto database.

For Debian 8 "Jessie", these problems have been fixed in version
1.3.4-2+deb8u3.

We recommend that you upgrade your mosquitto packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS