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Vulnerability of GRUB2: code execution via Unsigned Kernels Loading Without Shim

Synthesis of the vulnerability 

An attacker can use a vulnerability via Unsigned Kernels Loading Without Shim of GRUB2, in order to run code.
Impacted software: Fedora, Windows 10, Windows 2012, Windows 2016, Windows 2019, Windows 8, Windows RT, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu, Unix (platform) ~ not comprehensive.
Severity of this computer vulnerability: 1/4.
Creation date: 30/07/2020.
Références of this announce: ADV200011, CERTFR-2020-AVI-476, CERTFR-2020-AVI-477, CERTFR-2020-AVI-485, CVE-2020-15705, FEDORA-2020-41e57d7649, FEDORA-2020-e19b87f4f5, openSUSE-SU-2020:1280-1, openSUSE-SU-2020:1282-1, RHSA-2020:3216-01, RHSA-2020:3217-01, RHSA-2020:3223-01, RHSA-2020:3227-01, RHSA-2020:3271-01, RHSA-2020:3273-01, RHSA-2020:3274-01, RHSA-2020:3275-01, RHSA-2020:3276-01, SUSE-SU-2020:14461-1, SUSE-SU-2020:2303-1, SUSE-SU-2020:2304-1, SUSE-SU-2020:2305-1, SUSE-SU-2020:2306-1, SUSE-SU-2020:2307-1, SUSE-SU-2020:2308-1, USN-4432-1, USN-4432-2, VIGILANCE-VUL-32956.

Description of the vulnerability 

An attacker can use a vulnerability via Unsigned Kernels Loading Without Shim of GRUB2, in order to run code.
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This vulnerability alert impacts software or systems such as Fedora, Windows 10, Windows 2012, Windows 2016, Windows 2019, Windows 8, Windows RT, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu, Unix (platform) ~ not comprehensive.

Our Vigil@nce team determined that the severity of this computer weakness alert is low.

The trust level is of type confirmed by the editor, with an origin of physical access.

An attacker with a expert ability can exploit this computer vulnerability.

Solutions for this threat 

GRUB2: patch for BootHole.
A patch is available:
  http://git.savannah.gnu.org/gitweb/?p=grub.git&view=view+git+repository
  https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html
Information sources indicates additional steps.

Fedora 31: new grub2 packages.
New packages are available:
  Fedora 31: grub2 2.02-110.fc31

Fedora 32: new grub2 packages.
New packages are available:
  Fedora 32: grub2 2.04-22.fc32

openSUSE Leap 15: new grub2 packages.
New packages are available:
  openSUSE Leap 15.1: grub2 2.02-lp151.21.27.1
  openSUSE Leap 15.2: grub2 2.04-lp152.7.9.1

RHEL: new grub2 packages.
New packages are available:
  RHEL 7.2: grub2 2.02-0.86.el7_2
  RHEL 7.3: grub2 2.02-0.86.el7
  RHEL 7.4: grub2 2.02-0.86.el7_4
  RHEL 7.6: grub2 2.02-0.86.el7_6
  RHEL 7.7: grub2 2.02-0.86.el7_7
  RHEL 7.8: grub2 2.02-0.86.el7_8
  RHEL 8.0: grub2 2.02-87.el8_0
  RHEL 8.1: grub2 2.02-87.el8_1
  RHEL 8.2: grub2 2.02-87.el8_2

SUSE LE: new grub2 packages.
New packages are available:
  SUSE LE 11 SP4: grub2 2.00-0.66.21.1
  SUSE LE 12 SP2: grub2 2.02~beta2-115.56.1
  SUSE LE 12 SP3: grub2 2.02-4.61.1
  SUSE LE 12 SP4: grub2 2.02-12.39.1
  SUSE LE 12 SP5: grub2 2.02-12.39.1
  SUSE LE 15 RTM: grub2 2.02-19.56.1
  SUSE LE 15 SP1: grub2 2.02-26.33.1
  SUSE LE 15 SP2: grub2 2.04-9.15.1

Ubuntu: new grub packages.
New packages are available:
  Ubuntu 20.04 LTS: grub 2.04-1ubuntu26.2
  Ubuntu 18.04 LTS: grub 2.02-2ubuntu8.17
  Ubuntu 16.04 LTS: grub 2.02~beta2-36ubuntu3.27
  Ubuntu 14.04 ESM: grub 2.02~beta2-9ubuntu1.17-or-21

Windows: solution for BootHole.
The solution is indicated in information sources.
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