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...

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...

CVE-2020-15705: Improper Verification of Cryptographic Signature

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...

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 Exploitation Related products Microsoft-Windows-Server Microsoft-Windows-Server-2012...

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...

CVE-2020-15706: Concurrent Execution using Shared Resource with Improper Synchronization

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...

Ubuntu 18.04 LTS : linux kernel vulnerabilities (USN-4440-1)

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4440-1 advisory. It was discovered that the network block device nbd implementation in the Linux kernel did not properly check for error conditions in some situations. An...

USN-4427-1 linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities

It was discovered that the Kvaser CAN/USB driver in the Linux kernel did not properly initialize memory in certain situations. A local attacker could possibly use this to expose sensitive information kernel memory. CVE-2019-19947 Chuhong Yuan discovered that go7007 USB audio device driver in the...

USN-4426-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities

Jason A. Donenfeld discovered that the ACPI implementation in the Linux kernel did not properly restrict loading SSDT code from an EFI variable. A privileged attacker could use this to bypass Secure Boot lockdown restrictions and execute arbitrary code in the kernel. CVE-2019-20908 Fan Yang...

Ubuntu: Security Advisory (USN-4427-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2020 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...

CVE-2020-15780

An issue was discovered in drivers/acpi/acpiconfigfs.c in the Linux kernel before 5.7.7. Injection of malicious ACPI tables via configfs could be used by attackers to bypass lockdown and secure boot restrictions, aka CID-75b0cea7bf30...

CVE-2019-20908: Undefined Security Weakness

An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access permissions for the efivarssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032...

Cisco IOS XE Command Injection Vulnerability (CNVD-2020-31959)

Cisco IOS XE is the United States Cisco Cisco company's set of operating system developed for its network equipment. A command injection vulnerability exists in the handling of bootloader options in Cisco IOS XE Software, which arises from insufficient validation of input information when handlin...

CVE-2020-3207

A vulnerability in the processing of boot options of specific Cisco IOS XE Software switches could allow an authenticated, local attacker with root shell access to the underlying operating system OS to conduct a command injection attack during device boot. This vulnerability is due to insufficien...

CVE-2020-3207: Improper Neutralization of Special Elements used in a Command

A vulnerability in the processing of boot options of specific Cisco IOS XE Software switches could allow an authenticated, local attacker with root shell access to the underlying operating system OS to conduct a command injection attack during device boot. This vulnerability is due to insufficien...

Unspecified Vulnerability in Samsung Mobile Devices (CNVD-2020-31593)

Android is a Linux-based open source operating system jointly developed by Google Inc. and the Open Handheld Alliance OHA for short. Samsung mobile devices have a security vulnerability that can be exploited by attackers to bypass Secure Boot and gain root user access...

CVE-2018-21070

An issue was discovered on Samsung mobile devices with N7.x, O8.0 devices MSM8998 or SDM845 chipsets software. An attacker can bypass Secure Boot and obtain root access because of a missing Bootloader integrity check. The Samsung ID is SVE-2018-11552 May 2018...

Design/Logic Flaw

An issue was discovered on Samsung mobile devices with N7.x, O8.0 devices MSM8998 or SDM845 chipsets software. An attacker can bypass Secure Boot and obtain root access because of a missing Bootloader integrity check. The Samsung ID is SVE-2018-11552 May 2018...

CVE-2019-9436

In the Android kernel in the bootloader there is a possible secure boot bypass. This could lead to local escalation of privilege with System execution privileges needed. User interaction is needed for exploitation...

Cisco Releases Security Updates

Cisco has released security updates to address vulnerabilities affecting multiple products. A remote attacker could exploit some of these vulnerabilities to take control of an affected system. For updates addressing lower severity vulnerabilities, see the Cisco Security Advisories page. The...