USN-4120-2: systemd regression
10 September 2019
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 19.04
- Ubuntu 18.04 LTS
USN-4120-1 caused a regression in systemd.
- systemd - system and service manager
USN-4120-1 fixed a vulnerability in systemd. The update included a recent SRU from the updates pocket that introduced networking problems for some users. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that the systemd-resolved D-Bus interface did not enforce appropriate access controls. A local unprivileged user could exploit this to modify a system’s DNS resolver settings.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make all the necessary changes.