Detections
Analytics
CVE-2023-4692
high
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.
References
https://seclists.org/oss-sec/2023/q4/37
https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html
https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/
https://bugzilla.redhat.com/show_bug.cgi?id=2236613
https://access.redhat.com/security/cve/CVE-2023-4692