Debian Long Term Support / LTS Security Information / 2017 / Security Information -- DLA-961-1 mosquitto

Debian Security Advisory

DLA-961-1 mosquitto -- LTS security update

Date Reported:

30 May 2017

Affected Packages:

mosquitto

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2017-7650.

More information:

• CVE-2017-7650

  Pattern based ACLs can be bypassed by clients that set their username/client id to ‘#’ or ‘+’. This allows locally or remotely connected clients to access MQTT topics that they do have the rights to. The same issue may be present in third party authentication/access control plugins for Mosquitto.

  The vulnerability only comes into effect where pattern based ACLs are in use, or potentially where third party plugins are in use.

For Debian 7 Wheezy, these problems have been fixed in version 0.15-2+deb7u1.

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