grub2: shim_lock verifier allows non-kernel files to be loaded

A flaw was found in grub2. The shimlock verifier from grub2 allows non-kernel files to be loaded when secure boot is enabled, giving the possibility of unverified code or modules to be loaded when it should not be allowed...

grub2: Integer underflow in grub_net_recv_ip4_packets

A flaw was found in grub2 when handling IPv4 packets. This flaw allows an attacker to craft a malicious packet, triggering an integer underflow in grub code. Consequently, the memory allocation for handling the packet data may be smaller than the size needed. This issue causes an out-of-bands wri...

grub2: use-after-free in grub_cmd_chainloader()

A use-after-free vulnerability was found on grub2's chainloader command. This flaw allows an attacker to gain access to restricted data or cause arbitrary code execution if they can establish control from grub's memory allocation pattern...

grub2: Out-of-bound write when handling split HTTP headers

A flaw was found in grub2 when handling split HTTP headers. While processing a split HTTP header, grub2 wrongly advances its control pointer to the internal buffer by one position, which can lead to an out-of-bounds write. This flaw allows an attacker to leverage this issue by crafting a maliciou...

SUSE-SU-2022:2073-1 Security update for grub2

This update for grub2 fixes the following issues: Security fixes and hardenings for boothole 3 / boothole 2022 bsc1198581 - CVE-2021-3695: Fixed that a crafted PNG grayscale image could lead to out-of-bounds write in heap bsc1191184 - CVE-2021-3696: Fixed that a crafted PNG image could lead to...

[SECURITY] Fedora 36 Update: grub2-2.06-42.fc36

The GRand Unified Bootloader GRUB is a highly configurable and customizable bootloader with modular architecture. It supports a rich variety of kernel formats, file systems, computer architectures and hardware devices...

The vulnerability of the grub_net_recv_ip4_packets function in the Grub operating system allows a hacker to execute arbitrary code by sending specially crafted IP packets.

The vulnerability of the grubnetrecvip4packets function in the Grub operating system is related to integer overflow. Exploiting this vulnerability allows a remote attacker to execute arbitrary code by sending specially crafted IP packets...

CVE-2021-3695

A flaw was found in grub 2, where a crafted 16-bit grayscale PNG image may lead to an out-of-bounds write. This flaw allows an attacker to corrupt the data on the heap portion of the grub2's memory, leading to possible code execution and the circumvention of the secure boot mechanism...

grub2 缓冲区错误漏洞

grub2 is a Linux system boot program from the GNU community. A buffer error vulnerability exists in grub2, which can be exploited by an attacker to cause a buffer underflow write in the heap via a carefully crafted JPEG image...

grub2 缓冲区错误漏洞

grub2 is a Linux system boot program from the GNU community. A buffer error vulnerability exists in grub2, which can be exploited by an attacker to cause out-of-bounds writes during Huffman table processing via a carefully crafted PNG image...

PT-2022-6168

Name of the Vulnerable Software and Affected Versions grub2 versions prior to 2.12 Description A crafted 16-bit grayscale PNG image may lead to an out-of-bounds write in the heap area, potentially causing heap data corruption or arbitrary code execution, and circumventing secure boot protections...

grub2 数字错误漏洞

grub2 is a Linux system boot program from the American GNU community. A numeric error vulnerability exists in grub2 that stems from a grubnetrecvip4packets integer underflow...

grub2 数据伪造问题漏洞

grub2 is a Linux system boot program from the US GNU community. A data forgery issue vulnerability exists in grub2 that stems from the shimlock validator allowing non-kernel files to be loaded...

grub2 缓冲区错误漏洞

grub2 is a Linux system boot program from the US GNU community. A buffer error vulnerability exists in grub2 that stems from an out-of-bounds write when handling split HTTP headers...

grub2: Incorrect permission in grub.cfg allow unprivileged user to read the file content

A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue, as those users can eventually read any encrypted passwords present in...

Slackware: Security Advisory (SSA:2015-351-01)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 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...

OESA-2022-1597 grub2 security update

GNU GRUB is a Multiboot boot loader. It was derived from GRUB, the GRand Unified Bootloader, which was originally designed and implemented by Erich Stefan Boleyn. Security Fixes: A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission...

CVE-2021-46705

A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4, openSUSE Factory allows local attackers to truncate arbitrary files. This issue affects: SUSE Linux Enterprise Server 15 SP4 grub2 versions prior to 2.06-150400.7.1. SUSE openSUSE Factory grub2...

CVE-2021-46705

A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4, openSUSE Factory allows local attackers to truncate arbitrary files. This issue affects: SUSE Linux Enterprise Server 15 SP4 grub2 versions prior to 2.06-150400.7.1. SUSE openSUSE Factory grub2...

PT-2022-12908 · Grub2 · Grub2

Name of the Vulnerable Software and Affected Versions: grub2 versions prior to 2.06-150400.7.1 grub2 versions prior to 2.06-18.1 Description: A local attacker can exploit an Insecure Temporary File vulnerability in grub-once of grub2 to truncate arbitrary files. Recommendations: For SUSE Linux...