1. Ubuntu Security Notices
  2. USN-3806-1

USN-3806-1: systemd vulnerability

Publication date

5 November 2018

Overview

systemd-networkd could be made to crash or run programs if it received specially crafted network traffic.

Releases

Packages

  • systemd - system and service manager

Details

Felix Wilhelm discovered that the systemd-networkd DHCPv6 client
incorrectly handled certain DHCPv6 messages. In configurations where
systemd-networkd is being used, an attacker on the same network could use
this issue to cause systemd-networkd to crash, resulting in a denial of
service, or possibly execute arbitrary code.

Felix Wilhelm discovered that the systemd-networkd DHCPv6 client
incorrectly handled certain DHCPv6 messages. In configurations where
systemd-networkd is being used, an attacker on the same network could use
this issue to cause systemd-networkd to crash, resulting in a denial of
service, or possibly execute arbitrary code.

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
18.10 cosmic systemd –  239-7ubuntu10.1
18.04 bionic systemd –  237-3ubuntu10.4
16.04 xenial systemd –  229-4ubuntu21.6

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References

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