Debian Security Advisory

DLA-1525-1 mosquitto -- LTS security update

Date Reported:
28 Sep 2018
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2017-7653, CVE-2017-7654, CVE-2017-9868.
More information:
  • 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: