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Ubuntu Security Notice USN-3876-1

Ubuntu Security Notice USN-3876-1
Posted Jan 31, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3876-1 - Chad Seaman discovered that Avahi incorrectly handled certain messages. An attacker could possibly use this issue to cause a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2017-6519
MD5 | 3053032456fd1f606835ab8e8dfcadd4

Ubuntu Security Notice USN-3876-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3876-1
January 31, 2019

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

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

References:
https://usn.ubuntu.com/usn/usn-3876-1
CVE-2017-6519, CVE-2018-1000845

Package Information:
https://launchpad.net/ubuntu/+source/avahi/0.7-4ubuntu2.1
https://launchpad.net/ubuntu/+source/avahi/0.7-3.1ubuntu1.2
https://launchpad.net/ubuntu/+source/avahi/0.6.32~rc+dfsg-1ubuntu2.3
https://launchpad.net/ubuntu/+source/avahi/0.6.31-4ubuntu1.3
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