CVE-2016-4020

Опубликовано: 25 мая 2016

Источник: nvd

CVSS3: 6.5

CVSS2: 2.1

EPSS Низкий

Описание

The patch_instruction function in hw/i386/kvmvapic.c in QEMU does not initialize the imm32 variable, which allows local guest OS administrators to obtain sensitive information from host stack memory by accessing the Task Priority Register (TPR).

Ссылки

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=691a02e2ce0c413236a78dee6f2651c937b09fb0
http://www.securityfocus.com/bid/86067
Third Party Advisory
VDB Entry
http://www.ubuntu.com/usn/USN-2974-1
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1856
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2392
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2408
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1313686
Issue Tracking
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
Mailing List
Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01106.html
Patch
Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01118.html
Patch
Third Party Advisory
https://security.gentoo.org/glsa/201609-01
Third Party Advisory
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=691a02e2ce0c413236a78dee6f2651c937b09fb0
http://www.securityfocus.com/bid/86067
Third Party Advisory
VDB Entry
http://www.ubuntu.com/usn/USN-2974-1
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1856
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2392
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2408
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1313686
Issue Tracking
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
Mailing List
Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg01106.html
Patch
Third Party Advisory

Уязвимые конфигурации

Конфигурация 1

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

Версия до 2.6.2 (включая)

Конфигурация 2

Одно из

cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*

cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

Конфигурация 3

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Конфигурация 4

Одно из

cpe:2.3:a:redhat:openstack:6.0:*:*:*:*:*:*:*

cpe:2.3:a:redhat:openstack:7.0:*:*:*:*:*:*:*

cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:*

cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:*

cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*

cpe:2.3:a:redhat:openstack:11:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_eus:7.5:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_eus:7.7:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*

Конфигурация 5

Одновременно

cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

EPSS

Процентиль: 26%

0.00085

Низкий

6.5 Medium

CVSS3

2.1 Low

CVSS2

Дефекты

NVD-CWE-noinfo

Связанные уязвимости

CVE-2016-4020

CVSS3: 6.5

ubuntu

около 9 лет назад

CVE-2016-4020

CVSS3: 3.4

redhat

около 9 лет назад

CVE-2016-4020

CVSS3: 6.5

debian

около 9 лет назад

The patch_instruction function in hw/i386/kvmvapic.c in QEMU does not ...

GHSA-vcqr-cc8h-57gj

CVSS3: 6.5

github

около 3 лет назад

ELSA-2017-1856

oracle-oval

почти 8 лет назад

ELSA-2017-1856: qemu-kvm security, bug fix, and enhancement update (MODERATE)

EPSS

Процентиль: 26%

0.00085

Низкий

6.5 Medium

CVSS3

2.1 Low

CVSS2

Дефекты

NVD-CWE-noinfo