USN-3466-1: systemd vulnerability
26 October 2017
systemd vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.10
- Ubuntu 17.04
Summary
systemd could be made to temporarily stop responding if it received specially crafted network traffic.
Software Description
- systemd - system and service manager
Details
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 versions:
- Ubuntu 17.10
- systemd - 234-2ubuntu12.1
- Ubuntu 17.04
- systemd - 232-21ubuntu7.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.