AZL-34794 CVE-2023-4693 affecting package grub2 for versions less than 2.06-18

An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to...

Design/Logic Flaw

An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to...

Heap overflow

An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a...

CVE-2023-4693 Grub2: out-of-bounds read at fs/ntfs.c

An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to...

CVE-2023-4692

Concretely documented: CVE-2023-4692 is an out-of-bounds write in grub2’s NTFS driver that can corrupt heap metadata, potentially enabling arbitrary code execution and secure-boot protection bypass. Several connected advisories (e.g., CBL-Mariner) note that a patched grub2 is available; affected ...

CVE-2023-4692 Grub2: out-of-bounds write at fs/ntfs.c may lead to unsigned code execution

An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a...

CVE-2023-4692 Grub2: out-of-bounds write at fs/ntfs.c may lead to unsigned code execution

An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a...

CVE-2023-4693

CVE-2023-4693 : Out-of-bounds read in grub2’s NTFS filesystem driver can allow a physically present attacker to feed a crafted NTFS image and read arbitrary memory locations, leaking data such as memory contents or EFI variables. Connected advisories confirm the same CVE and identify a related wr...

CVE-2023-4692

An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a...

CVE-2023-4693

An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to...

SUSE SLED15: grub2 / grub2-arm64-efi / grub2-i386-pc / grub2-powerpc-ieee1275 / etc (SUSE-SU-2023:4140-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4140-1 advisory. Security fixes: - CVE-2023-4692: Fixed an out-of-bounds write at fs/ntfs.c which may lead to unsigned code...

SUSE SLED15: grub2 / grub2-arm64-efi / grub2-i386-pc / grub2-powerpc-ieee1275 / etc (SUSE-SU-2023:4141-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4141-1 advisory. Security fixes: - CVE-2023-4692: Fixed an out-of-bounds write at fs/ntfs.c which may lead to unsigned code...

SUSE-SU-2023:4141-1 Security update for grub2

This update for grub2 fixes the following issues: Security fixes: - CVE-2023-4692: Fixed an out-of-bounds write at fs/ntfs.c which may lead to unsigned code execution. bsc1215935 - CVE-2023-4693: Fixed an out-of-bounds read at fs/ntfs.c which may lead to leak sensitive information. bsc1215936 Oth...

SUSE-SU-2023:4140-1 Security update for grub2

This update for grub2 fixes the following issues: Security fixes: - CVE-2023-4692: Fixed an out-of-bounds write at fs/ntfs.c which may lead to unsigned code execution. bsc1215935 - CVE-2023-4693: Fixed an out-of-bounds read at fs/ntfs.c which may lead to leak sensitive information. bsc1215936 Oth...

Amazon Linux 2 : grub2 (ALAS-2023-2292)

The version of grub2 installed on the remote host is prior to 2.06-14. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-2292 advisory. An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a...

SUSE: Security Advisory (SUSE-SU-2023:4130-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2023 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...

SUSE-SU-2023:4130-1 Security update for grub2

This update for grub2 fixes the following issues: - CVE-2023-4692: Fixed an out-of-bounds write at fs/ntfs.c which may lead to unsigned code execution. bsc1215935 - CVE-2023-4693: Fixed an out-of-bounds read at fs/ntfs.c which may lead to leak sensitive information. bsc1215936...

Important: grub2

Issue Overview: An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap...

The vulnerability in the fs/ntfs.c component of the Grub2 operating system’s loader allows a hacker to execute arbitrary code.

The vulnerability of the fs/ntfs.c component of the Grub2 operating system’s loader is related to buffer overflow in dynamic memory. Exploiting this vulnerability could allow an attacker to execute arbitrary code...

SUSE SLES12: grub2 / grub2-arm64-efi / grub2-i386-pc / grub2-s390x-emu / etc (SUSE-SU-2023:4085-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:4085-1 advisory. Security fixes: - CVE-2023-4692: Fixed an out-of-bounds write at fs/ntfs.c which may lead to unsigned code execution. bsc1215935 -...