cve/2023/CVE-2023-4692.md

CVE-2023-4692

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.

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