USN-6129-2: Avahi vulnerability

Published Jul 25, 2023
·
Updated

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.

Affected Software

6 affected componentsFixes available
All of the following
ubuntu/avahi-daemon<0.7-3.1ubuntu1.3+esm1
0.7-3.1ubuntu1.3+esm1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/avahi-daemon<0.6.32~rc+dfsg-1ubuntu2.3+esm2
0.6.32~rc+dfsg-1ubuntu2.3+esm2
Ubuntu Ubuntu=16.04
All of the following
ubuntu/avahi-daemon<0.6.31-4ubuntu1.3+esm2
0.6.31-4ubuntu1.3+esm2
Ubuntu Ubuntu=14.04

Event History

Jul 25, 2023
Advisory Published
via Ubuntu·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

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Frequently Asked Questions

1

What is the vulnerability ID of this Avahi vulnerability?

The vulnerability ID of this Avahi vulnerability is USN-6129-2.

2

Which versions of Ubuntu are affected by this Avahi vulnerability?

The versions of Ubuntu affected by this Avahi vulnerability are 14.04 LTS, 16.04 LTS, and 18.04 LTS.

3

What is the severity of the Avahi vulnerability identified in USN-6129-1?

The severity of the Avahi vulnerability identified in USN-6129-1 is not specified.

4

How can I fix the Avahi vulnerability in Ubuntu 14.04 LTS?

To fix the Avahi vulnerability in Ubuntu 14.04 LTS, update the avahi-daemon package to version 0.6.31-4ubuntu1.3+esm2 or later.

5

Where can I find more information about the Avahi vulnerability?

You can find more information about the Avahi vulnerability at the following references: [CVE-2023-1981](https://ubuntu.com/security/CVE-2023-1981), [USN-6129-1](https://ubuntu.com/security/notices/USN-6129-1), [USN-6129-2](https://ubuntu.com/security/notices/USN-6129-2).

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