USN-3466-1: systemd vulnerability

Ubuntu Security Notice USN-3466-1

26th October, 2017

systemd vulnerability

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

  • Ubuntu 17.10
  • Ubuntu 17.04


systemd could be made to temporarily stop responding if it received specially crafted network traffic.

Software description

  • systemd - system and service manager


Karim Hossen & Thomas Imbert and Nelson William Gamazo Sanchez
independently discovered that systemd-resolved incorrectly
handled certain DNS responses. A remote attacker could possibly use this
issue to cause systemd to temporarily stop responding, resulting in a
denial of service.

Update instructions

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

Ubuntu 17.10:
systemd 234-2ubuntu12.1
Ubuntu 17.04:
systemd 232-21ubuntu7.1

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.