USN-4047-1: libvirt vulnerabilities

8 July 2019

libvirt vulnerabilities

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

  • Ubuntu 19.04
  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in libvirt.

Software Description

  • libvirt - Libvirt virtualization toolkit

Details

Matthias Gerstner and Ján Tomko discovered that libvirt incorrectly handled certain API calls. An attacker could possibly use this issue to check for arbitrary files, or execute arbitrary binaries. In the default installation, attackers would be isolated by the libvirt AppArmor profile.

Update instructions

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

Ubuntu 19.04
libvirt-clients - 5.0.0-1ubuntu2.4
libvirt-daemon - 5.0.0-1ubuntu2.4
libvirt0 - 5.0.0-1ubuntu2.4
Ubuntu 18.10
libvirt-clients - 4.6.0-2ubuntu3.8
libvirt-daemon - 4.6.0-2ubuntu3.8
libvirt0 - 4.6.0-2ubuntu3.8
Ubuntu 18.04 LTS
libvirt-clients - 4.0.0-1ubuntu8.12
libvirt-daemon - 4.0.0-1ubuntu8.12
libvirt0 - 4.0.0-1ubuntu8.12
Ubuntu 16.04 LTS
libvirt-bin - 1.3.1-1ubuntu10.27
libvirt0 - 1.3.1-1ubuntu10.27

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