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ubuntucveUbuntu.comUB:CVE-2019-20908
HistoryJul 15, 2020 - 12:00 a.m.

CVE-2019-20908

2020-07-1500:00:00
ubuntu.com
ubuntu.com
9

6.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

6.9 Medium

CVSS2

Access Vector

LOCAL

Access 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

0.0005 Low

EPSS

Percentile

15.5%

An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel
before 5.4. Incorrect access permissions for the efivar_ssdt ACPI variable
could be used by attackers to bypass lockdown or secure boot restrictions,
aka CID-1957a85b0032.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-112.113UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1079.83UNKNOWN
ubuntu18.04noarchlinux-aws-5.3< 5.3.0-1032.34~18.04.2UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1079.83~16.04.1UNKNOWN
ubuntu14.04noarchlinux-azure< 4.15.0-1092.102~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlinux-azure< 4.15.0-1092.102~16.04.1UNKNOWN
ubuntu18.04noarchlinux-azure-4.15< 4.15.0-1092.102UNKNOWN
ubuntu18.04noarchlinux-azure-5.3< 5.3.0-1034.35~18.04.1UNKNOWN
ubuntu16.04noarchlinux-gcp< 4.15.0-1080.90~16.04.1UNKNOWN
ubuntu18.04noarchlinux-gcp-4.15< 4.15.0-1080.90UNKNOWN
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6.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

6.9 Medium

CVSS2

Access Vector

LOCAL

Access 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

0.0005 Low

EPSS

Percentile

15.5%