CVE-2020-10717 Information

Description

A potential DoS flaw was found in the virtio-fs shared file system daemon (virtiofsd) implementation of the QEMU version = v5.0. Virtio-fs is meant to share a host file system directory with a guest via virtio-fs device. If the guest opens the maximum number of file descriptors under the shared directory a denial of service may occur. This flaw allows a guest user/process to cause this denial of service on the host.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10717 https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg00141.html https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg00143.html https://security.gentoo.org/glsa/202011-09 https://www.openwall.com/lists/oss-security/2020/05/04/1

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5