[USN-6129-2] Avahi vulnerability
Camila Camargo de Matos
camila.camargodematos at canonical.com
Tue Jul 25 13:39:47 UTC 2023
Ubuntu Security Notice USN-6129-2
July 25, 2023
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)
Avahi could be made to crash if it received specially crafted DBus traffic.
- avahi: IPv4LL network address configuration daemon
USN-6129-1 fixed a vulnerability in Avahi. This update provides the
corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 18.04
Original advisory details:
It was discovered that Avahi incorrectly handled certain DBus messages. A
local attacker could possibly use this issue to cause Avahi to crash,
resulting in a denial of service.
The problem can be corrected by updating your system to the following
Ubuntu 18.04 LTS (Available with Ubuntu Pro):
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
Ubuntu 14.04 LTS (Available with Ubuntu Pro):
In general, a standard system update will make all the necessary changes.
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