CVE-2021-20203

CVSS V2 Low 2.1 CVSS V3 Low 3.2
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.
Overview
  • CVE ID
  • CVE-2021-20203
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-02-25T20:15:11
  • Last Modified Date
  • 2022-09-30T19:32:37
Weakness Enumerations
CWE URL
CWE-190 http://cwe.mitre.org/data/definitions/190.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* 1 OR 5.2.0
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 2.1
  • Severity
  • LOW
  • Exploitability Score
  • 3.9
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • CHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • LOW
  • Base Score
  • 3.2
  • Base Severity
  • LOW
  • Exploitability Score
  • 1.5
  • Impact Score
  • 1.4
References
Reference URL Reference Tags
https://bugs.launchpad.net/qemu/+bug/1913873 Exploit Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1922441 Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202208-27 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-20203
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20203
History
Created Old Value New Value Data Type Notes
2022-05-10 07:16:14 Added to TrackCVE
2022-12-05 22:45:31 2021-02-25T20:15Z 2021-02-25T20:15:11 CVE Published Date updated
2022-12-05 22:45:31 2022-09-30T19:32:37 CVE Modified Date updated
2022-12-05 22:45:31 Analyzed Vulnerability Status updated
2022-12-05 22:45:36 References updated