Description
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 result, arbitrary code execution and secure boot protection bypass may be achieved.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9Attack Vector: Local
Complexity: Low
Privileges: Low
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High
Affected Packages2 packages
Also affects: Enterprise Linux 8.0, 9.0
🔴Vulnerability Details
4CVEListGrub2: out-of-bounds write at fs/ntfs.c may lead to unsigned code execution↗2023-10-25 GHSAGHSA-6w7h-fpm5-3ww6: An out-of-bounds write flaw was found in grub2's NTFS filesystem driver↗2023-10-25 OSVCVE-2023-4692: An out-of-bounds write flaw was found in grub2's NTFS filesystem driver↗2023-10-25 OSVgrub2-signed, grub2-unsigned vulnerabilities↗2023-10-04 📋Vendor Advisories
4MicrosoftGrub2: out-of-bounds write at fs/ntfs.c may lead to unsigned code execution↗2023-10-10 UbuntuGRUB2 vulnerabilities↗2023-10-04 Red Hatgrub2: Out-of-bounds write at fs/ntfs.c may lead to unsigned code execution↗2023-10-03 DebianCVE-2023-4692: grub2 - An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This is...↗2023