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-2020-10713

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-2020-14309

There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacke...

UBUNTU-CVE-2020-14310

There is an issue on grub2 before version 2.06 at function readsectionasstring. It expects a font name to be at max UINT32MAX - 1 length in bytes but it doesn't verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a...

CVE-2020-14311

There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow...

SUSE-SU-2020:2074-1 Security update for grub2

This update for grub2 fixes the following issues: - Fix for CVE-2020-10713 bsc1168994 - Fix for CVE-2020-14308 CVE-2020-14309, CVE-2020-14310, CVE-2020-14311 bsc1173812 - Fix for CVE-2020-15706 bsc1174463 - Fix for CVE-2020-15707 bsc1174570 - Use overflow checking primitives where the arithmetic...

[SECURITY] [DSA 4735-1] grub2 security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4735-1 [email protected] https://www.debian.org/security/ Yves-Alexis Perez July 29, 2020 https://www.debian.org/security/faq -...

SUSE-SU-2020:2073-1 Security update for grub2

This update for grub2 fixes the following issues: - Fix for CVE-2020-10713 bsc1168994 - Fix for CVE-2020-14308 CVE-2020-14309, CVE-2020-14310, CVE-2020-14311 bsc1173812 - Fix for CVE-2020-15706 bsc1174463 - Fix for CVE-2020-15707 bsc1174570 - Use overflow checking primitives where the arithmetic...

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...

HPESBHF04020 rev.2 - HPE insmod and GRUB2 vulnerability, Local Arbitrary Code Execution

Potential Security Impact: Local: Arbitrary Code Execution SUPPORTED SOFTWARE VERSIONS: ONLY impacted versions are listed. Intelligent Provisioning Gen10 and Gen10 Plus Servers - v3.30.226, v3.46, Gen9 - Prior to 2.82, Gen8 - Prior to 1.72 HPE Service Pack for ProLiant Prior to Version 2020.03.2...

grub2 security update

2.02-81.0.3 - Fix CVE-2020-10713, CVE-2020-14308, CVE-2020-14309, CVE-2020-14310, CVE-2020-14311, CVE-2020-15705, CVE-2020-15706, CVE-2020-15707 Orabug: 31225072 - Update signing certificate for efi binaries...

grub2 security update

2.02-81.0.4 - Fix CVE-2020-10713, CVE-2020-14308, CVE-2020-14309, CVE-2020-14310, CVE-2020-14311, CVE-2020-15705, CVE-2020-15706, CVE-2020-15707 Orabug: 31225072 - Update signing certificate for efi binaries 2.02-0.81.0.2 - Enable common subpackage build for aarch64 - Disable RHEL patch...

grub2 security update

2.02-82.0.2.el82.1 - Fix CVE-2020-10713, CVE-2020-14308, CVE-2020-14309, CVE-2020-14310, CVE-2020-14311, CVE-2020-15705, CVE-2020-15706, CVE-2020-15707 Orabug: 31225072 - Update signing certificate for efi binaries...

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...

DSA-4735-1 grub2 - security update

Bulletin has no description...

PT-2020-3623 · Gnu +7 · Grub2 +7

Name of the Vulnerable Software and Affected Versions: grub2 versions prior to 2.06 Description: The issue is related to a buffer overflow when handling symbolic links in ext filesystems. An arithmetic overflow occurs when a filesystem contains a symbolic link with an inode size of UINT32 MAX,...

HPESBHF04022 rev.1 - Superdome Flex Servers with Secure Boot enabled and GRUB2 vulnerability, Local Arbitrary Code Execution

Potential Security Impact: Local: Arbitrary Code Execution SUPPORTED SOFTWARE VERSIONS: ONLY impacted versions are listed. HPE Superdome Flex Server Version 3.25.46 May 12 2020 or earlier CVSS Scores: | CVE | CVSS Vector | Base Score | | --- | --- | --- | | CVE-2020-10713 |...

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...

PT-2020-3621 · Gnu +7 · Grub2 +7

Name of the Vulnerable Software and Affected Versions: Grub2 versions prior to 2.06 Description: The issue is related to an integer overflow of the UINT32 value, which can allow an attacker to access confidential data, compromise its integrity, and cause a denial of service. Specifically, the...