Huawei EulerOS: Security Advisory for grub2 (EulerOS-SA-2021-2126)

The remote host is missing an update for the Huawei EulerOS 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...

EulerOS Virtualization 3.0.2.2 : grub2 (EulerOS-SA-2021-2126)

According to the versions of the grub2 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - A flaw was found in grub2. The rmmod implementation allows the unloading of a module used as a dependency without checking if any...

CentOS 8 : fwupd (CESA-2021:2566)

The remote CentOS Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the CESA-2021:2566 advisory. - grub2: acpi command allows privileged user to load crafted ACPI tables when Secure Boot is enabled CVE-2020-14372 - grub2: Use-after-free in rmmod...

Advisory ROSA-SA-2021-1849

Software: grub2 2.02 OS: Cobalt 7.9 CVE-ID: CVE-2020-15706 CVE-Crit: MEDIUM CVE-DESC: GRUB2 contains a race condition in grubscriptfunctioncreate leading to a post-release exploitation vulnerability that can be triggered by overriding a function when the same function is already executing, leadin...

EulerOS Virtualization for ARM 64 3.0.2.0 : grub2 (EulerOS-SA-2021-2082)

According to the versions of the grub2 packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - A flaw was found in grub2 in versions prior to 2.06. Setparamprefix in the menu rendering code performs a length...

EulerOS Virtualization 3.0.6.6 : grub2 (EulerOS-SA-2021-2027)

According to the versions of the grub2 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - A flaw was found in grub2 in versions prior to 2.06. Setparamprefix in the menu rendering code performs a length calculation on th...

Oracle Linux 8 : kernel (ELSA-2021-2570)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-2570 advisory. - Bluetooth: verify AMP hcichan before ampdestroy Gopal Tiwari 1962544 1962546 CVE-2021-33034 - redhat/configs: Add CONFIGSYSTEMREVOCATIONKEYS and...

Protection Bypass

The Linux kernel is vulnerable to Protection Bypass. It does not properly enforce the Secure Boot Forbidden Signature Database aka dbx protection mechanism. This affects certs/blacklist.c and certs/systemkeyring.c. A flaw was found in the Linux kernel in certs/blacklist.c, When signature entries...

CVE-2021-34380

Bootloader contains a vulnerability in NVIDIA MB2 where potential heap overflow might cause corruption of the heap metadata, which might lead to arbitrary code execution, denial of service, and information disclosure during secure boot...

CVE-2021-34380

Bootloader contains a vulnerability in NVIDIA MB2 where potential heap overflow might cause corruption of the heap metadata, which might lead to arbitrary code execution, denial of service, and information disclosure during secure boot...

CVE-2021-34380

Bootloader contains a vulnerability in NVIDIA MB2 where potential heap overflow might cause corruption of the heap metadata, which might lead to arbitrary code execution, denial of service, and information disclosure during secure boot...

Design/Logic Flaw

Bootloader contains a vulnerability in NVIDIA MB2 where potential heap overflow might cause corruption of the heap metadata, which might lead to arbitrary code execution, denial of service, and information disclosure during secure boot...

CVE-2021-34380

Bootloader contains a vulnerability in NVIDIA MB2 where potential heap overflow might cause corruption of the heap metadata, which might lead to arbitrary code execution, denial of service, and information disclosure during secure boot...

EulerOS Virtualization for ARM 64 3.0.6.0 : grub2 (EulerOS-SA-2021-2001)

According to the versions of the grub2 packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - A flaw was found in grub2 in versions prior to 2.06. Setparamprefix in the menu rendering code performs a length...

grub2: Use-after-free in rmmod command

A flaw was found in grub2. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The...

grub2: Out-of-bounds write in grub_usb_device_initialize()

A flaw was found in grub2. 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 allowing a bypass of the...

grub2: cutmem command allows privileged user to remove memory regions when Secure Boot is enabled

A flaw was found in grub2. 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 threat from this...

grub2: acpi command allows privileged user to load crafted ACPI tables when Secure Boot is enabled

A flaw was found in GRUB 2, 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 lockdown variable content direct...

grub2: Stack buffer overflow in grub_parser_split_cmdline()

A flaw was found in grub2. 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 references a variable with...

kernel: security bypass in certs/blacklist.c and certs/system_keyring.c

A flaw was found in the Linux kernel in certs/blacklist.c, When signature entries for EFICERTX509GUID are contained in the Secure Boot Forbidden Signature Database, the entries are skipped. This can cause a security threat and breach system integrity, confidentiality and even lead to a denial of...