1. Ubuntu Security Notices
  2. USN-3909-1

USN-3909-1: libvirt vulnerability

Publication date

14 March 2019

Overview

libvirt could be made to crash under certain conditions.

Releases

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.

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

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 libvirt-clients –  4.6.0-2ubuntu3.4
libvirt-daemon –  4.6.0-2ubuntu3.4
libvirt0 –  4.6.0-2ubuntu3.4
18.04 bionic libvirt-clients –  4.0.0-1ubuntu8.8
libvirt-daemon –  4.0.0-1ubuntu8.8
libvirt0 –  4.0.0-1ubuntu8.8
16.04 xenial libvirt-bin –  1.3.1-1ubuntu10.25
libvirt0 –  1.3.1-1ubuntu10.25

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References

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