CVE-2020-27672

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2020-27672
An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a host OS denial of service, achieve data corruption, or possibly gain privileges by exploiting a race condition that leads to a use-after-free involving 2MiB and 1GiB superpages.

7.0 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.9 /10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 3.4 / Impact : 10.0

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/19/7 Mailing List Third Party Advisory
http://xenbits.xen.org/xsa/advisory-345.html Patch Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/
https://security.gentoo.org/glsa/202011-06 Third Party Advisory
https://www.debian.org/security/2020/dsa-4804 Third Party Advisory
https://xenbits.xen.org/xsa/advisory-345.html Patch Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*

Configuration 4 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
History

07 Nov 2023, 03:20

Type Values Removed Values Added
References
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/', 'name': 'FEDORA-2020-6dd36a716c', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ -

26 Apr 2022, 16:23

Type Values Removed Values Added
First Time Debian debian Linux
Debian
Opensuse leap
Fedoraproject fedora
Opensuse
Fedoraproject
References (CONFIRM) http://xenbits.xen.org/xsa/advisory-345.html - (CONFIRM) http://xenbits.xen.org/xsa/advisory-345.html - Patch, Vendor Advisory
References (SUSE) http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html - Third Party Advisory (SUSE) http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html - Mailing List, Third Party Advisory
References (GENTOO) https://security.gentoo.org/glsa/202011-06 - (GENTOO) https://security.gentoo.org/glsa/202011-06 - Third Party Advisory
References (DEBIAN) https://www.debian.org/security/2020/dsa-4804 - (DEBIAN) https://www.debian.org/security/2020/dsa-4804 - Third Party Advisory
References (SUSE) http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html - Third Party Advisory (SUSE) http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html - Mailing List, Third Party Advisory
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ - Mailing List, Third Party Advisory
References (MLIST) http://www.openwall.com/lists/oss-security/2021/01/19/7 - (MLIST) http://www.openwall.com/lists/oss-security/2021/01/19/7 - Mailing List, Third Party Advisory
CPE cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
CWE CWE-416

19 Jan 2021, 20:15

Type Values Removed Values Added
References
  • (MLIST) http://www.openwall.com/lists/oss-security/2021/01/19/7 -
  • (CONFIRM) http://xenbits.xen.org/xsa/advisory-345.html -
Information

Published : 2020-10-22 21:15

Updated : 2023-12-10 13:41

NVD link : CVE-2020-27672

Mitre link : CVE-2020-27672

CVE.ORG link : CVE-2020-27672

JSON object : View

Products Affected

fedoraproject

  • fedora

opensuse

  • leap

xen

  • xen

debian

  • debian_linux
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-416

Use After Free