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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2020-27674
HistoryOct 22, 2020 - 9:15 p.m.

CVE-2020-27674

2020-10-2221:15:14
Debian Security Bug Tracker
security-tracker.debian.org
13

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

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.

OSVersionArchitecturePackageVersionFilename
Debian12allxen< 4.14.0+80-gd101b417b7-1xen_4.14.0+80-gd101b417b7-1_all.deb
Debian11allxen< 4.14.0+80-gd101b417b7-1xen_4.14.0+80-gd101b417b7-1_all.deb
Debian10allxen< 4.11.4+57-g41a822c392-1xen_4.11.4+57-g41a822c392-1_all.deb
Debian999allxen< 4.14.0+80-gd101b417b7-1xen_4.14.0+80-gd101b417b7-1_all.deb
Debian13allxen< 4.14.0+80-gd101b417b7-1xen_4.14.0+80-gd101b417b7-1_all.deb

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

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%