USN-3806-1: systemd vulnerability

5 November 2018

systemd vulnerability

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

• Ubuntu 18.10
• Ubuntu 18.04 LTS
• Ubuntu 16.04 LTS

Summary

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

Software Description

• 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.

Update instructions

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

Ubuntu 18.10

systemd - 239-7ubuntu10.1

Ubuntu 18.04 LTS

systemd - 237-3ubuntu10.4

Ubuntu 16.04 LTS

systemd - 229-4ubuntu21.6

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

from Ubuntu Security Notices https://ift.tt/2yUq9IT