CVE-2020-10701

A missing authorization flaw was found in the libvirt API responsible for changing the QEMU agent response timeout. This flaw allows read-only connections to adjust the time that libvirt waits for the QEMU guest agent to respond to agent commands. Depending on the timeout value that is set, this flaw can make guest agent commands fail because the agent cannot respond in time. Unprivileged users with a read-only connection could abuse this flaw to set the response timeout for all guest agent messages to zero, potentially leading to a denial of service.

This flaw did not affect the versions of libvirt as shipped with Red Hat Enterprise Linux 5, 6, 7, 8 and RHEL Advanced Virtualization, as they did not include the vulnerable code, which was introduced in a later version of the package. Specifically, libvirt API to change QEMU agent response timeout was added in libvirt upstream version v5.10.0.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.