CVE-2021-20203

low

Description

An integer overflow issue was found in the vmxnet3 NIC emulator of the QEMU for versions up to v5.2.0. It may occur if a guest was to supply invalid values for rx/tx queue size or other NIC parameters. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1922441

https://bugs.launchpad.net/qemu/+bug/1913873

https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html

Details

Source: MITRE

Published: 2021-02-25

Updated: 2022-06-01

Type: CWE-190

Risk Information

CVSS v2

Base Score: 2.1

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

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 3.2

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

Impact Score: 1.4

Exploitability Score: 1.5

Severity: LOW