CVE-2020-27670

CVSS V2 Medium 6.9 CVSS V3 High 7.8

Description

An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because an AMD IOMMU page-table entry can be half-updated.

Overview

CVE ID
CVE-2020-27670

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2020-10-22T21:15:13

Last Modified Date
2022-10-07T15:24:20

Weakness Enumerations

CWE	URL
CWE-345	http://cwe.mitre.org/data/definitions/345.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
cpe:2.3:o:xen:xen:::::::x86:*	1	OR	4.14.0
cpe:2.3:o:opensuse:leap:15.1:::::::*	1	OR
cpe:2.3:o:opensuse:leap:15.2:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:31:::::::*	1	OR
cpe:2.3:o:debian:debian_linux:10.0:::::::*	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:L/AC:M/Au:N/C:C/I:C/A:C

Access Vector
LOCAL

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
6.9

Severity
MEDIUM

Exploitability Score
3.4

Impact Score
10

CVSS Version 3

Version
3.1

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

Attack Vector
LOCAL

Attack Compatibility
HIGH

Privileges Required
LOW

User Interaction
NONE

Scope
CHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7.8

Base Severity
HIGH

Exploitability Score
1.1

Impact Score
6

References

Reference URL	Reference Tags
https://xenbits.xen.org/xsa/advisory-347.html	Patch Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html	Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html
https://security.gentoo.org/glsa/202011-06
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/
https://www.debian.org/security/2020/dsa-4804
http://www.openwall.com/lists/oss-security/2021/01/19/9
http://xenbits.xen.org/xsa/advisory-347.html

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-27670
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27670

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:26:52				Added to TrackCVE
2022-12-05 00:55:15	2020-10-22T21:15Z	2020-10-22T21:15:13	CVE Published Date	updated
2022-12-05 00:55:15		2022-10-07T15:24:20	CVE Modified Date	updated
2022-12-05 00:55:15		Analyzed	Vulnerability Status	updated