CVE-2020-27779

A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest...

CVE-2020-27749

A flaw was found in grub2 in versions prior to 2.06. Variable names present are expanded in the supplied command line into their corresponding variable contents, using a 1kB stack buffer for temporary storage, without sufficient bounds checking. If the function is called with a command line that...

UBUNTU-CVE-2020-27749

A flaw was found in grub2 in versions prior to 2.06. Variable names present are expanded in the supplied command line into their corresponding variable contents, using a 1kB stack buffer for temporary storage, without sufficient bounds checking. If the function is called with a command line that...

CVE-2020-14372

A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an attacker with privileged access to craft a Secondary System Description Table SSDT containing code to overwrite the Linux kernel lockdow...

CVE-2020-25647

A flaw was found in grub2 in versions prior to 2.06. During USB device initialization, descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited, an attacker could trigger memory corruption leading to arbitrary code execution...

CVE-2021-20233

A flaw was found in grub2 in versions prior to 2.06. Setparamprefix in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one...

CVE-2021-20225

A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and...

UBUNTU-CVE-2021-20233

A flaw was found in grub2 in versions prior to 2.06. Setparamprefix in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one...

grub2 security update

2.02-90.0.2 - Fix CVE-2020-14372 CVE-2020-25632 CVE-2020-25647 CVE-2020-27749 CVE-2020-27779 CVE-2021-20225 CVE-2021-20233 Orabug: 32530657 - Fix various coverity issues Orabug: 32530657 - Disable os-prober by default Orabug: 32530657 - Add SBAT metadata to grubx64.efi Orabug: 32530657...

grub2 security update

2.02-0.87.0.7 - Fix CVE-2020-14372 CVE-2020-25632 CVE-2020-25647 CVE-2020-27749 CVE-2020-27779 CVE-2021-20225 CVE-2021-20233 Orabug: 32530657 - Fix various coverity issues Orabug: 32530657 - Add SBAT metadata to grubx64.efi Orabug: 32530657 2.02-0.87.0.5 - Use similar format for menu entry in gru...

DSA-4867-1 grub2 - security update

Bulletin has no description...

Important Photon OS Security Update - PHSA-2021-0001

Updates of 'grub2', 'openvswitch', 'glib' packages of Photon OS have been released...

RHEL 7 : grub2 (RHSA-2021:0702)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0702 advisory. The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular...

RHEL 8 : grub2 (RHSA-2021:0697)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0697 advisory. The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular...

Important Photon OS Security Update - PHSA-2021-4.0-0001

Updates of 'glib', 'grub2', 'openvswitch' packages of Photon OS have been released...

RHEL 8 : grub2 (RHSA-2021:0698)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0698 advisory. The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular...

RHEL 8 : grub2 (RHSA-2021:0696)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0696 advisory. The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular...

RHEL 7 : grub2 (RHSA-2021:0703)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0703 advisory. The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular...

RHEL 7 : grub2 (RHSA-2021:0704)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0704 advisory. The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular...

PT-2021-7384 · Grub2 +2 · Grub2 +2

Name of the Vulnerable Software and Affected Versions: Grub2 versions prior to 2.06 Description: The issue is related to the implementation of the shim lock mechanism in Grub2, which is associated with incorrect cryptographic signature verification. This flaw allows an attacker to boot any kernel...