[USN-4120-1] systemd vulnerability

Chris Coulson chris.coulson at canonical.com
Tue Sep 3 22:39:51 UTC 2019

Ubuntu Security Notice USN-4120-1
September 03, 2019

systemd vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04
- Ubuntu 18.04 LTS


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

Software Description:
- 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:
  systemd                         240-6ubuntu5.6

Ubuntu 18.04 LTS:
  systemd                         237-3ubuntu10.28

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


Package Information:

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