USN-4371-1: libvirt vulnerabilities

Releases

• Ubuntu 19.10
• Ubuntu 18.04 ESM

Packages

• 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

• 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

• CVE-2020-10703
• CVE-2020-12430