CVE-2021-20203

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.

CVSS v3.0 3.2 LOW
CVSS v2.0 2.1 LOW

3.2^/10

CVSS v3.0 : LOW

Vector :

Exploitability : 1.5 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope CHANGED

2.1^/10

CVSS v2.0 : LOW

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

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1922441	Issue Tracking Patch Third Party Advisory
https://bugs.launchpad.net/qemu/+bug/1913873	Exploit Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202208-27	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html	Mailing List Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:debian:debian_linux:10.0:::::::*

Information

Published : 2021-02-25 12:15

Updated : 2022-09-30 12:32

NVD link : CVE-2021-20203

Mitre link : CVE-2021-20203

JSON object : View

CWE

CWE-190

Integer Overflow or Wraparound

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Products Affected

debian

debian_linux

fedoraproject

fedora

qemu

qemu

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