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Ubuntu Security Notice USN-4371-1

Ubuntu Security Notice USN-4371-1
Posted May 21, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4371-1 - It was discovered that libvirt incorrectly handled an active pool without a target path. A remote attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. It was discovered that libvirt incorrectly handled memory when retrieving certain domain statistics. A remote attacker could possibly use this issue to cause libvirt to consume resources, resulting in a denial of service. This issue only affected Ubuntu 19.10. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2020-10703, CVE-2020-12430
MD5 | 277d54e2071edbe532c6f11bdd7e2022

Ubuntu Security Notice USN-4371-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4371-1
May 21, 2020

libvirt vulnerabilities
==========================================================================

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

- Ubuntu 19.10
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in libvirt.

Software Description:
- libvirt: Libvirt virtualization toolkit

Details:

It was discovered that libvirt incorrectly handled an active pool without a
target path. A remote attacker could possibly use this issue to cause
libvirt to crash, resulting in a denial of service. (CVE-2020-10703)

It was discovered that libvirt incorrectly handled memory when retrieving
certain domain statistics. A remote attacker could possibly use this issue
to cause libvirt to consume resources, resulting in a denial of service.
This issue only affected Ubuntu 19.10. (CVE-2020-12430)

Update instructions:

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

Ubuntu 19.10:
libvirt-clients 5.4.0-0ubuntu5.4
libvirt-daemon 5.4.0-0ubuntu5.4
libvirt0 5.4.0-0ubuntu5.4

Ubuntu 18.04 LTS:
libvirt-clients 4.0.0-1ubuntu8.17
libvirt-daemon 4.0.0-1ubuntu8.17
libvirt0 4.0.0-1ubuntu8.17

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

References:
https://usn.ubuntu.com/4371-1
CVE-2020-10703, CVE-2020-12430

Package Information:
https://launchpad.net/ubuntu/+source/libvirt/5.4.0-0ubuntu5.4
https://launchpad.net/ubuntu/+source/libvirt/4.0.0-1ubuntu8.17

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