CVE-2020-27749

CVE-2020-27749 affects grub2, with the vulnerability in grub_parser_split_cmdline() where variable names in the command line are expanded into contents using a 1 KB stack buffer without sufficient bounds checking. This can overflow the stack and corrupt the stack frame, potentially allowing code ...

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-2020-27779

The CVE-2020-27779 issue affects grub2 prior to 2.06. The cutmem command does not honor Secure Boot locking, enabling a local attacker with privilege to remove memory address ranges and potentially bypass Secure Boot protections. Impacted effect includes data confidentiality, integrity, and avail...

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-2020-27779

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...

Arbitrary Code Execution

grub2 is vulnerable to arbitrary code execution. An attacker could bypass the Secure Boot mechanism via triggering a memory corruption which allows for malicious code execution...

Arbitrary Code Execution

grub is vulnerable to arbitrary code execution. A use-after-free in the mmod implementation allows for the bypass of Secure Boot protections and potentially arbtirary code execution on the host OS...

Arbitrary Code Execution

grub is vulnerable to arbitrary code execution. An attacker is able to remove address ranges from memory via the cutmem command to bypass Secure Boot protections...

Privilege Escalation

grub2 is vulnerable to privilege escalation. The vulnerability exists as 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 ...

Arbitrary Code Execution

grub is vulnerable to arbitrary code execution. The ACPI command is incorrectly enabled when Secure Boot is enabled, allowing an attacker to craft a malicious SSDT that overwrites the memory containing the kernel lockdown variable content, resulting in arbitrary code execution...

grub2 安全漏洞

grub2 is a Linux system boot program from the GNU community. A security vulnerability exists in versions of grub2 prior to 2.06 where it incorrectly enables the ACPI command when enabling secure boot. The vulnerability allows an attacker with privileged access to create an auxiliary system...

SUSE SLES12 Security Update : grub2 (SUSE-SU-2021:0682-1)

This update for grub2 fixes the following issues : grub2 now implements the new 'SBAT' method for SHIM based secure boot revocation. bsc1182057 Following security issues are fixed that can violate secure boot constraints : CVE-2020-25632: Fixed a use-after-free in rmmod command bsc1176711...

SUSE SLES12 Security Update : grub2 (SUSE-SU-2021:0681-1)

This update for grub2 fixes the following issues : grub2 now implements the new 'SBAT' method for SHIM based secure boot revocation. bsc1182057 Following security issues are fixed that can violate secure boot constraints : CVE-2020-25632: Fixed a use-after-free in rmmod command bsc1176711...

SUSE SLES12 Security Update : grub2 (SUSE-SU-2021:0679-1)

This update for grub2 fixes the following issues : grub2 now implements the new 'SBAT' method for SHIM based secure boot revocation. bsc1182057 Following security issues are fixed that can violate secure boot constraints : CVE-2020-25632: Fixed a use-after-free in rmmod command bsc1176711...

RHEL 7 : grub2 (RHSA-2021:0700)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0700 advisory. The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular...

Oracle Linux 7 : grub2 (ELSA-2021-9076)

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9076 advisory. - Fix CVE-2020-14372 CVE-2020-25632 CVE-2020-25647 CVE-2020-27749 CVE-2020-27779 CVE-2021-20225 CVE-2021-20233 Orabug: 32530657 Tenable has extracted t...

SUSE SLES15 Security Update : grub2 (SUSE-SU-2021:0684-1)

This update for grub2 fixes the following issues : grub2 now implements the new 'SBAT' method for SHIM based secure boot revocation. bsc1182057 Following security issues are fixed that can violate secure boot constraints : CVE-2020-25632: Fixed a use-after-free in rmmod command bsc1176711...

Debian: Security Advisory (DSA-4867-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Debian DSA-4867-1 : grub2 - security update

Several vulnerabilities have been discovered in the GRUB2 bootloader. - CVE-2020-14372 It was discovered that the acpi command allows a privileged user to load crafted ACPI tables when Secure Boot is enabled. - CVE-2020-25632 A use-after-free vulnerability was found in the rmmod command. -...

grub2 安全漏洞

grub2 is a Linux system boot program from the GNU community. A security vulnerability in versions of grub2 prior to 2.06, where the cutmem command does not support secure boot locking, allows a privileged attacker to remove address ranges from memory, thus giving the opportunity to bypass secure...