A libvirt security update has been released for Ubuntu Linux 20.04 LTS.

USN-4452-1: libvirt vulnerability

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Ubuntu Security Notice USN-4452-1
August 04, 2020

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

- Ubuntu 20.04 LTS

Summary:

libvirt could be made to run programs as an administrator.

Software Description:
- libvirt: Libvirt virtualization toolkit

Details:

Trent Shea discovered that the libvirt package set incorrect permissions on
the UNIX domain socket. A local attacker could use this issue to access
libvirt and escalate privileges.

Update instructions:

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

Ubuntu 20.04 LTS:
libvirt-daemon 6.0.0-0ubuntu8.3
libvirt-daemon-system 6.0.0-0ubuntu8.3
libvirt0 6.0.0-0ubuntu8.3

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

References:
  https://usn.ubuntu.com/4452-1
CVE-2020-15708

Package Information:
  https://launchpad.net/ubuntu/+source/libvirt/6.0.0-0ubuntu8.3