1. Ubuntu Security Notices
  2. USN-3876-1

USN-3876-1: Avahi vulnerabilities

Publication date

31 January 2019

Overview

Several security issues were fixed in Avahi.

Releases

Packages

  • avahi - Avahi IPv4LL network address configuration daemon

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)

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
18.10 cosmic avahi-daemon –  0.7-4ubuntu2.1
libavahi-core7 –  0.7-4ubuntu2.1
18.04 bionic avahi-daemon –  0.7-3.1ubuntu1.2
libavahi-core7 –  0.7-3.1ubuntu1.2
16.04 xenial avahi-daemon –  0.6.32~rc+dfsg-1ubuntu2.3
libavahi-core7 –  0.6.32~rc+dfsg-1ubuntu2.3
14.04 trusty avahi-daemon –  0.6.31-4ubuntu1.3
libavahi-core7 –  0.6.31-4ubuntu1.3

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›