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Test Kennung:1.3.6.1.4.1.25623.1.0.844503
Kategorie:Ubuntu Local Security Checks
Titel:Ubuntu: Security Advisory for linux (USN-4427-1)
Zusammenfassung:The remote host is missing an update for the 'linux'; package(s) announced via the USN-4427-1 advisory.
Beschreibung:Summary:
The remote host is missing an update for the 'linux'
package(s) announced via the USN-4427-1 advisory.

Vulnerability Insight:
It was discovered that the Kvaser CAN/USB driver in the Linux kernel did
not properly initialize memory in certain situations. A local attacker
could possibly use this to expose sensitive information (kernel memory).
(CVE-2019-19947)

Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximate attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2019-20810)

Jason A. Donenfeld discovered that the ACPI implementation in the Linux
kernel did not properly restrict loading SSDT code from an EFI variable. A
privileged attacker could use this to bypass Secure Boot lockdown
restrictions and execute arbitrary code in the kernel. (CVE-2019-20908)

It was discovered that the elf handling code in the Linux kernel did not
initialize memory before using it in certain situations. A local attacker
could use this to possibly expose sensitive information (kernel memory).
(CVE-2020-10732)

It was discovered that the Linux kernel did not correctly apply Speculative
Store Bypass Disable (SSBD) mitigations in certain situations. A local
attacker could possibly use this to expose sensitive information.
(CVE-2020-10766)

It was discovered that the Linux kernel did not correctly apply Indirect
Branch Predictor Barrier (IBPB) mitigations in certain situations. A local
attacker could possibly use this to expose sensitive information.
(CVE-2020-10767)

It was discovered that the Linux kernel could incorrectly enable indirect
branch speculation after it has been disabled for a process via a prctl()
call. A local attacker could possibly use this to expose sensitive
information. (CVE-2020-10768)

Mauricio Faria de Oliveira discovered that the aufs implementation in the
Linux kernel improperly managed inode reference counts in the
vfsub_dentry_open() method. A local attacker could use this vulnerability
to cause a denial of service. (CVE-2020-11935)

It was discovered that the Virtual Terminal keyboard driver in the Linux
kernel contained an integer overflow. A local attacker could possibly use
this to have a unspecified impact. (CVE-2020-13974)

It was discovered that the efi subsystem in the Linux kernel did not handle
memory allocation failures during early boot in some situations. A local
attacker could possibly use this to cause a denial of service (system
crash). (CVE-2019-12380)

Affected Software/OS:
'linux' package(s) on Ubuntu 16.04 LTS.

Solution:
Please install the updated package(s).

CVSS Score:
7.2

CVSS Vector:
AV:L/AC:L/Au:N/C:C/I:C/A:C

Querverweis: Common Vulnerability Exposure (CVE) ID: CVE-2019-19947
Common Vulnerability Exposure (CVE) ID: CVE-2019-20810
Common Vulnerability Exposure (CVE) ID: CVE-2019-20908
Common Vulnerability Exposure (CVE) ID: CVE-2020-10732
Common Vulnerability Exposure (CVE) ID: CVE-2020-10766
Common Vulnerability Exposure (CVE) ID: CVE-2020-10767
Common Vulnerability Exposure (CVE) ID: CVE-2020-10768
Common Vulnerability Exposure (CVE) ID: CVE-2020-11935
Common Vulnerability Exposure (CVE) ID: CVE-2020-13974
Common Vulnerability Exposure (CVE) ID: CVE-2019-12380
CopyrightCopyright (C) 2020 Greenbone Networks GmbH

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