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USN-6129-1: Avahi vulnerability

1 June 2023

Avahi could be made to crash if it received specially crafted DBus traffic.

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Releases

Packages

  • avahi - IPv4LL network address configuration daemon

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.

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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 23.04
Ubuntu 22.10
Ubuntu 22.04
Ubuntu 20.04

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

References

Related notices

  • USN-6129-2: libavahi-client-dev, libavahi-ui-gtk3-0, libavahi-qt4-dev, avahi-autoipd, libavahi-client3, avahi-discover, libavahi-ui-gtk3-dev, gir1.2-avahi-0.6, avahi-utils, avahi-daemon, libavahi-glib-dev, libavahi-common-dev, libavahi-common3, libavahi-compat-libdnssd1, libavahi-core-dev, avahi-ui-utils, libavahi-compat-libdnssd-dev, avahi-dnsconfd, libavahi-common-data, python-avahi, libavahi-ui0, libavahi-ui-dev, libavahi-gobject-dev, libavahi-glib1, avahi, libavahi-core7, libavahi-gobject0, libavahi-qt4-1