CVE-2023-4693 Information

Description

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.

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=2238343 https://access.redhat.com/security/cve/CVE-2023-4693 https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/ https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html https://seclists.org/oss-sec/2023/q4/37