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Vulnerability of GRUB2: multiple vulnerabilities

Synthesis of the vulnerability 

An attacker can use several vulnerabilities of GRUB2.
Impacted systems: Debian, Fedora, HP ProLiant, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES.
Severity of this alert: 2/4.
Number of vulnerabilities in this bulletin: 8.
Creation date: 03/03/2021.
Références of this alert: CERTFR-2021-AVI-172, CVE-2020-14372, CVE-2020-25632, CVE-2020-25647, CVE-2020-27749, CVE-2020-27779, CVE-2021-20225, CVE-2021-20233, CVE-2021-3418, DSA-4867-1, FEDORA-2021-5497f7409b, FEDORA-2021-f6c91e2b75, HPESBHF04116, openSUSE-SU-2021:0462-1, RHSA-2021:0696-01, RHSA-2021:0697-01, RHSA-2021:0698-01, RHSA-2021:0699-01, RHSA-2021:0700-01, RHSA-2021:0701-01, RHSA-2021:0702-01, RHSA-2021:0703-01, RHSA-2021:0704-01, SUSE-SU-2021:0679-1, SUSE-SU-2021:0681-1, SUSE-SU-2021:0682-1, SUSE-SU-2021:0683-1, SUSE-SU-2021:0684-1, SUSE-SU-2021:0685-1, SUSE-SU-2021:14659-1, SUSE-SU-2021:1564-1, VIGILANCE-VUL-34733.

Description of the vulnerability 

An attacker can use several vulnerabilities of GRUB2.
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This vulnerability note impacts software or systems such as Debian, Fedora, HP ProLiant, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this cybersecurity vulnerability is medium.

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

This bulletin is about 8 vulnerabilities.

An attacker with a expert ability can exploit this computer threat note.

Solutions for this threat 

Debian 10: new grub2 packages.
New packages are available:
  Debian 10: grub2 2.02+dfsg1-20+deb10u4

Fedora 33: new grub2 packages.
New packages are available:
  Fedora 33: grub2 2.06~rc1-1.fc33

Fedora 33: new shim-unsigned-x64 packages.
New packages are available:
  Fedora 33: shim-unsigned-x64 15.4-5.fc33

HPE ProLiant: solution for GRUB2.
The solution is indicated in information sources.

openSUSE Leap 15.2: new grub2 packages.
New packages are available:
  openSUSE Leap 15.2: grub2 2.04-lp152.7.22.7

RHEL: new grub2 packages.
New packages are available:
  RHEL 7.2: grub2 2.02-0.86.el7_2.2
  RHEL 7.3: grub2 2.02-0.86.el7_3.2
  RHEL 7.4: grub2 2.02-0.86.el7_4.2
  RHEL 7.6: grub2 2.02-0.86.el7_6.3
  RHEL 7.7: grub2 2.02-0.86.el7_7.3
  RHEL 7.9: grub2 2.02-0.87.el7_9.2
  RHEL 8.1: grub2 2.02-87.el8_1.2
  RHEL 8.2: grub2 2.02-87.el8_2.3
  RHEL 8.3: grub2 2.02-90.el8_3.1

SUSE LE 15 SP1-2: new shim packages.
New packages are available:
  SUSE LE 15 SP1: shim 15.4-3.20.1
  SUSE LE 15 SP2: shim 15.4-3.20.1

SUSE LE: new grub2 packages.
New packages are available:
  SUSE LE 11 SP4: grub2 x86_64-efi-2.02-0.66.26.1
  SUSE LE 12 SP2: grub2 2.02-115.59.1
  SUSE LE 12 SP3: grub2 2.02-4.69.1
  SUSE LE 12 SP4: grub2 2.02-12.47.1
  SUSE LE 12 SP5: grub2 2.02-12.47.1
  SUSE LE 15 RTM: grub2 2.02-19.66.1
  SUSE LE 15 SP1: grub2 2.02-26.43.1
  SUSE LE 15 SP2: grub2 2.04-9.34.1
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