USN-3876-1: Avahi vulnerabilities

Releases

• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

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)

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

• avahi-daemon - 0.7-3.1ubuntu1.2
• libavahi-core7 - 0.7-3.1ubuntu1.2

Ubuntu 16.04

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

Ubuntu 14.04

• avahi-daemon - 0.6.31-4ubuntu1.3
• libavahi-core7 - 0.6.31-4ubuntu1.3

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

References

• CVE-2017-6519
• CVE-2018-1000845

Related notices

• USN-3876-2: libavahi-core7, avahi-daemon, avahi