cve/2023/CVE-2023-4693.md

CVE-2023-4693

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.

POC

Reference

No PoCs from references.

Github

• https://github.com/Jurij-Ivastsuk/WAXAR-shim-review
• https://github.com/NaverCloudPlatform/shim-review
• https://github.com/Rodrigo-NR/shim-review
• https://github.com/ctrliq/ciq-shim-build
• https://github.com/fkie-cad/nvd-json-data-feeds
• https://github.com/rhboot/shim-review
• https://github.com/vathpela/shim-review