CVE Vulnerabilities

CVE-2020-35517

Improper Privilege Management

Published: Jan 28, 2021 | Modified: Feb 12, 2023
CVSS 3.x
8.2
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 2.x
4.6 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Ubuntu
MEDIUM

A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices.

Weakness

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Affected Software

Name Vendor Start Version End Version
Qemu Qemu 5.0.0 (including) 5.2.50 (including)
Advanced Virtualization for RHEL 8.2.1 RedHat virt:8.2-8020120210211153838.863bb0db *
Advanced Virtualization for RHEL 8.2.1 RedHat virt-devel:8.2-8020120210211153838.863bb0db *
Advanced Virtualization for RHEL 8.3.1 RedHat virt:8.3-8030120210211160750.71132145 *
Advanced Virtualization for RHEL 8.3.1 RedHat virt-devel:8.3-8030120210211160750.71132145 *
Red Hat Enterprise Linux 8 RedHat virt-devel:rhel-8030020210210212009.229f0a1c *
Red Hat Enterprise Linux 8 RedHat virt:rhel-8030020210210212009.229f0a1c *
Qemu Ubuntu devel *
Qemu Ubuntu groovy *
Qemu Ubuntu hirsute *
Qemu Ubuntu impish *
Qemu Ubuntu jammy *
Qemu Ubuntu trusty *

Potential Mitigations

References