Lucene search

K
cve[email protected]CVE-2020-27671
HistoryOct 22, 2020 - 9:15 p.m.

CVE-2020-27671

2020-10-2221:15:13
web.nvd.nist.gov
127
xen
cve-2020-27671
data corruption
privilege escalation
denial of service
nvd
x86 hvm
pvh
iommu
tlb flushes.

6.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.7 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.3%

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.

Affected configurations

NVD
Node
xenxenRange4.2.04.14.0
Node
opensuseleapMatch15.1
OR
opensuseleapMatch15.2
Node
debiandebian_linuxMatch10.0
Node
fedoraprojectfedoraMatch31
CPENameOperatorVersion
xen:xenxenle4.14.0

6.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.7 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.3%