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CVE-2020-35517

Published: 28 January 2021

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.

Priority

Medium

Cvss 3 Severity Score

8.2

Score breakdown

Status

Package Release Status
qemu-kvm
Launchpad, Ubuntu, Debian
jammy Does not exist

xenial Does not exist

impish Does not exist

bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream Needs triage

qemu
Launchpad, Ubuntu, Debian
impish
Released (1:5.2+dfsg-6ubuntu2)
groovy
Released (1:5.0-5ubuntu9.9)
upstream Needs triage

bionic Not vulnerable
(code not present)
focal Not vulnerable
(code not present)
hirsute
Released (1:5.2+dfsg-6ubuntu2)
trusty Not vulnerable
(code not present)
xenial Not vulnerable
(code not present)
jammy
Released (1:5.2+dfsg-6ubuntu2)
Patches:
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=8afaaee976965b7fb90ec225a51d60f35c5f173c
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=22d2ece71e533310da31f2857ebc4a00d91968b3
upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=a3fdbbc7f271bff7d53d0501b29d910ece0b3789

Severity score breakdown

Parameter Value
Base score 8.2
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H