USN-3876-1: Avahi vulnerabilities

avahi vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 18.10
• Ubuntu 18.04 LTS
• Ubuntu 16.04 LTS
• Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Avahi.

Software Description

• 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)

Update instructions

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

Ubuntu 18.10

avahi-daemon - 0.7-4ubuntu2.1

libavahi-core7 - 0.7-4ubuntu2.1

Ubuntu 18.04 LTS

avahi-daemon - 0.7-3.1ubuntu1.2

libavahi-core7 - 0.7-3.1ubuntu1.2

Ubuntu 16.04 LTS

avahi-daemon - 0.6.32~rc+dfsg-1ubuntu2.3

libavahi-core7 - 0.6.32~rc+dfsg-1ubuntu2.3

Ubuntu 14.04 LTS

avahi-daemon - 0.6.31-4ubuntu1.3

libavahi-core7 - 0.6.31-4ubuntu1.3

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2017-6519
• CVE-2018-1000845

from Ubuntu Security Notices http://bit.ly/2ShNW0d