CVE Vulnerability

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.

6.9 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.4 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

7 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1 / 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

References
Link Resource
https://xenbits.xen.org/xsa/advisory-345.html Patch Vendor Advisory
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
https://security.gentoo.org/glsa/202011-06 Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ Mailing List Third Party Advisory
https://www.debian.org/security/2020/dsa-4804 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
Configurations

Configuration 1

cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Information

Published : 2020-10-22 09:15

Updated : 2022-04-26 04:23

NVD link : CVE-2020-27672

Mitre link : CVE-2020-27672

Products Affected
No products.
CWE
CWE-362

CWE-416