CVE-2020-27671

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 22-10-2020 11:15

Last modified: - 26-04-2022 06:23

Total changes: - 5

Description

An issue was discovered in Xen through 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because coalescing of per-page IOMMU TLB flushes is mishandled.

Common Vulnerability Scoring System (CVSS)

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

High

Attack complexity

Local

Attack vector

High

Availability

High

Confidentiality

High

Integrity

Low

Privileges required

Changed

Scope

None

User interaction

7.8

Base score

1.1

6.0

Exploitability score

Impact score

Verification logic

vendor=xen AND product=xen AND versionEndIncluding=4.14.0 AND versionStartIncluding=4.2.0

vendor=opensuse AND product=leap AND version=15.1

vendor=opensuse AND product=leap AND version=15.2

vendor=Debian AND product=debian_linux AND version=10.0

vendor=fedoraproject AND product=fedora AND version=31

Reference

https://xenbits.xen.org/xsa/advisory-346.html
openSUSE-SU-2020:1783-Mailing List, Third Party Advisory
openSUSE-SU-2020:1844-Mailing List, Third Party Advisory
GLSA-202011-06-Third Party Advisory
FEDORA-2020-6dd36a716c-Mailing List, Third Party Advisory
DSA-4804-Third Party Advisory
[oss-security] 20210119 Xen Security Advisory 346 v3 (CVE-2020-27671) - undue deferral of IOMMU TLB flushes-Mailing List, Third Party Advisory
http://xenbits.xen.org/xsa/advisory-346.html

Keywords

CVE-2020-27671

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2020-27671

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures