CVE-2023-4693 (enterprise_linux, grub2)

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 be leaked, presenting a high Confidentiality risk.

attack attacker confidentiality cve data driver file file system filesystem flaw found grub2 high image issue leaked may memory ntfs out-of-bounds risk sensitive sensitive data system variable