Headline
Ubuntu Security Notice USN-6129-1
Ubuntu Security Notice 6129-1 - 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 Security Notice USN-6129-1
June 01, 2023
avahi vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.04
- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
Summary:
Avahi could be made to crash if it received specially crafted DBus traffic.
Software Description:
- 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.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.04:
avahi-daemon 0.8-6ubuntu1.23.04.1
Ubuntu 22.10:
avahi-daemon 0.8-6ubuntu1.22.10.1
Ubuntu 22.04 LTS:
avahi-daemon 0.8-5ubuntu5.1
Ubuntu 20.04 LTS:
avahi-daemon 0.7-4ubuntu7.2
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6129-1
CVE-2023-1981
Package Information:
https://launchpad.net/ubuntu/+source/avahi/0.8-6ubuntu1.23.04.1
https://launchpad.net/ubuntu/+source/avahi/0.8-6ubuntu1.22.10.1
https://launchpad.net/ubuntu/+source/avahi/0.8-5ubuntu5.1
https://launchpad.net/ubuntu/+source/avahi/0.7-4ubuntu7.2
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