CVE-2020-15706

GRUB2 contains a race condition in grubscriptfunctioncreate leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2...

CVE-2020-15706 GRUB2 contains a race condition leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing.

GRUB2 contains a race condition in grubscriptfunctioncreate leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2...

CVE-2020-15705

GRUB2 ≤ 2.04 fails to validate kernel signatures when booting directly without shim, allowing Secure Boot bypass if the kernel signing certificate is in the Secure Boot DB. The issue affects GRUB2 2.04 and earlier; upgrades to patched grub2/shim combinations are advised (e.g., 2.06+ and related s...

CVE-2020-15706

GRUB2 contains a race condition in grubscriptfunctioncreate leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2...

CVE-2020-15707

Integer overflows were discovered in the functions grubcmdinitrd and grubinitrdinit in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu the functionality is not included in GRUB2 upstream, leading to a heap-based buffer overflow. These could be triggered by an extremely...

CVE-2020-15705

GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim...

UBUNTU-CVE-2020-15707

Integer overflows were discovered in the functions grubcmdinitrd and grubinitrdinit in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu the functionality is not included in GRUB2 upstream, leading to a heap-based buffer overflow. These could be triggered by an extremely...

UBUNTU-CVE-2020-15705

GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim...

CVE-2020-15707

Integer overflows were discovered in the functions grubcmdinitrd and grubinitrdinit in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu the functionality is not included in GRUB2 upstream, leading to a heap-based buffer overflow. These could be triggered by an extremely...

UBUNTU-CVE-2020-10713

A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access...

CVE-2020-15706

GRUB2 contains a race condition in grubscriptfunctioncreate leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2...

CVE-2020-15705

GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim...

CVE-2020-10713

A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access...

UBUNTU-CVE-2020-15706

GRUB2 contains a race condition in grubscriptfunctioncreate leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2...

Microsoft Guidance for Addressing Security Feature Bypass in GRUB

Executive Summary Microsoft is aware of a vulnerability in the GRand Unified Boot Loader GRUB, commonly used by Linux. This vulnerability, known as “There’s a Hole in the Boot”, could allow for Secure Boot bypass. To exploit this vulnerability, an attacker would need to have administrative...

KLA11928 Microsoft Advisory for GRUB

Security vulnerability was found in the GRand Unified Boot Loader GRUB. The vulnerability could allow for Secure Boot bypass. For more information check the link below. Original advisories ADV200011 Related products Microsoft-Windows-Server Microsoft-Windows-Server-2012 Microsoft-Windows-8...

PT-2020-6737 · Grub2 +7 · Grub2 +7

Name of the Vulnerable Software and Affected Versions: GRUB2 versions 2.04 and prior Description: The issue is related to an incorrect validation of cryptographic signatures in the GRUB2 bootloader, which can allow an attacker to bypass secure boot and execute arbitrary code, gaining full control...

PT-2020-3312 · Gnu +8 · Grub2 +8

The vulnerable software is GRUB2, a widely used bootloader for Linux and other operating systems. The affected versions are prior to 2.06. The issue is caused by a buffer overflow in the GRUB2 configuration file, which can be exploited by attackers to gain arbitrary code execution during the boot...

GRUB2 bootloader is vulnerable to buffer overflow

Overview The GRUB2 boot loader is vulnerable to buffer overflow, which results in arbitrary code execution during the boot process, even when Secure Boot is enabled. Description GRUB2 is a multiboot boot loader that replaced GRUB Legacy in 2012. A boot loader is the first program that runs upon...

BSA-2020-1053

Security Advisory ID : BSA-2020-1053 Component : GRUB2 Revision : 1.0: Initial Security Researchers from Eclypsium disclosed “BootHole.” 1, 2.“BootHole” vulnerability in the GRUB2 bootloader opens up Windows and Linux devices using Secure Boot to attack. All operating systems using GRUB2 with...