6.5
CVSSv3

CVE-2020-10701

Published: 27/05/2021 Updated: 13/05/2022
CVSS v2 Base Score: 4 | Impact Score: 2.9 | Exploitability Score: 8
CVSS v3 Base Score: 6.5 | Impact Score: 3.6 | Exploitability Score: 2.8
VMScore: 356
Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P

Vulnerability Summary

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 affects libvirt versions prior to 6.2.0.

Vulnerability Trend

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redhat libvirt

Vendor Advisories

Debian Bug report logs - #955841 libvirt: CVE-2020-10701: guest agent timeout can be set under read-only mode leading to DoS Package: src:libvirt; Maintainer for src:libvirt is Debian Libvirt Maintainers <pkg-libvirt-maintainers@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Sun, ...