USN-3876-2: Avahi vulnerabilities

31 January 2019

Several security issues were fixed in Avahi.



  • avahi - Avahi IPv4LL network address configuration daemon


USN-3876-1 fixed a vulnerability in Avahi. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

Chad Seaman discovered that Avahi incorrectly handled certain messages.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2017-6519, CVE-2018-1000845)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04

In general, a standard system update will make all the necessary changes.

Related notices

  • USN-3876-1: python-avahi, avahi, libavahi-ui0, libavahi-qt4-1, avahi-daemon, libavahi-core-dev, libavahi-ui-gtk3-0, libavahi-glib-dev, libavahi-ui-gtk3-dev, libavahi-qt4-dev, libavahi-ui-dev, libavahi-compat-libdnssd-dev, libavahi-gobject0, gir1.2-avahi-0.6, libavahi-gobject-dev, libavahi-common-data, libavahi-glib1, libavahi-common-dev, avahi-ui-utils, avahi-discover, libavahi-core7-udeb, libavahi-core7, libavahi-compat-libdnssd1, libavahi-client3, libavahi-client-dev, avahi-autoipd, libavahi-common3-udeb, avahi-dnsconfd, libavahi-common3, avahi-utils