1. Ubuntu Security Notices
  2. USN-4120-1

USN-4120-1: systemd vulnerability

Publication date

3 September 2019

Overview

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

Releases

Packages

  • systemd - system and service manager

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.

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
19.04 disco systemd –  240-6ubuntu5.6
18.04 bionic systemd –  237-3ubuntu10.28

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References

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