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USN-4120-1: systemd vulnerability

3 September 2019

systemd-resolved would allow unprivileged users to change DNS settings.



  • systemd - system and service manager


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.

Update instructions

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

Ubuntu 19.04
Ubuntu 18.04

After a standard system update you need to reboot your computer to make
all the necessary changes.