CVE-2023-4693

MEDIUM

GNU Grub2 < 2.12 - Out-of-Bounds Read

Title source: rule
STIX 2.1

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.

References (13)

Core 13
Core References
Mailing List, Third Party Advisory
https://seclists.org/oss-sec/2023/q4/37
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:2456
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:3184
Third Party Advisory vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2023-4693
Issue Tracking, Third Party Advisory issue-tracking x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2238343

Scores

CVSS v3 5.3
EPSS 0.0001
EPSS Percentile 1.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N

Details

CWE
CWE-125
Status published
Products (3)
gnu/grub2 < 2.12
redhat/enterprise_linux 8.0
redhat/enterprise_linux 9.0
Published Oct 25, 2023
Tracked Since Feb 18, 2026