USN-3909-1: libvirt vulnerability

Releases

• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• 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

• libvirt-clients - 4.0.0-1ubuntu8.8
• libvirt-daemon - 4.0.0-1ubuntu8.8
• libvirt0 - 4.0.0-1ubuntu8.8

Ubuntu 16.04

• libvirt-bin - 1.3.1-1ubuntu10.25
• libvirt0 - 1.3.1-1ubuntu10.25

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

References

• CVE-2019-3840