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...

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...

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

grub2 is vulnerable to arbitrary code execution...

Important Photon OS Security Update - PHSA-2021-0202

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

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...

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...

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...

SUSE SLED15 / SLES15 Security Update : grub2 (SUSE-SU-2021:0683-1)

This update for grub2 fixes the following issues : grub2 implements the new 'SBAT' method for SHIM based secure boot revocation. bsc1182057 CVE-2020-25632: Fixed a use-after-free in rmmod command bsc1176711 CVE-2020-25647: Fixed an out-of-bound write in grubusbdeviceinitialize bsc1177883...

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...

Important Photon OS Security Update - PHSA-2021-3.0-0202

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

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...

grub2 缓冲区错误漏洞

grub2 is a Linux system boot program from the GNU community. A security vulnerability exists in versions of grub2 prior to 2.06. Setparamprefix in the menu presentation code performs length calculations based on the premise that it takes three characters to represent a single quote with a quotati...

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...

Oracle Linux 8 : grub2 (ELSA-2021-9077)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-9077 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...

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. -...