Lucene search

K
cve[email protected]CVE-2020-27674
HistoryOct 22, 2020 - 9:15 p.m.

CVE-2020-27674

2020-10-2221:15:14
CWE-787
web.nvd.nist.gov
119
xen
security vulnerability
cve-2020-27674
guest os
kernel memory
nvd
invlpg-like attack

5.3 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

5.9 Medium

AI Score

Confidence

High

4.6 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.0005 Low

EPSS

Percentile

17.5%

An issue was discovered in Xen through 4.14.x allowing x86 PV guest OS users to gain guest OS privileges by modifying kernel memory contents, because invalidation of TLB entries is mishandled during use of an INVLPG-like attack technique.

Affected configurations

NVD
Node
xenxenRange4.14.0x86
Node
fedoraprojectfedoraMatch31
OR
fedoraprojectfedoraMatch32
OR
fedoraprojectfedoraMatch33
Node
debiandebian_linuxMatch10.0
CPENameOperatorVersion
xen:xenxenle4.14.0

5.3 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

5.9 Medium

AI Score

Confidence

High

4.6 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.0005 Low

EPSS

Percentile

17.5%