USN-6129-2: Avahi vulnerability

25 July 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

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
LTS.

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.

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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.

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Update instructions

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

Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

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

References

Related notices

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