CVE-2020-35517

high

Description

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1915823

https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.html

https://www.openwall.com/lists/oss-security/2021/01/22/1

https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c

https://security.netapp.com/advisory/ntap-20210312-0002/

Details

Source: MITRE

Published: 2021-01-28

Updated: 2021-07-08

Type: CWE-269

Risk Information

CVSS v2

Base Score: 4.6

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 8.2

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

Impact Score: 6

Exploitability Score: 1.5

Severity: HIGH