USN-3909-1: libvirt vulnerability
14 March 2019
libvirt vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary
libvirt could be made to crash under certain conditions.
Software Description
- libvirt - Libvirt virtualization toolkit
Details
It was discovered that libvirt incorrectly handled waiting for certain agent events. An attacker inside a guest could possibly use this issue to cause libvirtd to 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 18.10
- libvirt-clients - 4.6.0-2ubuntu3.4
- libvirt-daemon - 4.6.0-2ubuntu3.4
- libvirt0 - 4.6.0-2ubuntu3.4
- Ubuntu 18.04 LTS
- libvirt-clients - 4.0.0-1ubuntu8.8
- libvirt-daemon - 4.0.0-1ubuntu8.8
- libvirt0 - 4.0.0-1ubuntu8.8
- Ubuntu 16.04 LTS
- libvirt-bin - 1.3.1-1ubuntu10.25
- libvirt0 - 1.3.1-1ubuntu10.25
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.