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CVE-2023-4692 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/errata/RHSA-2024:2456	CVE
https://access.redhat.com/errata/RHSA-2024:3184	CVE
https://access.redhat.com/security/cve/CVE-2023-4692	CVE	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2236613	CVE	Issue TrackingThird Party Advisory
https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/	CVE	ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00007.html	CVE
https://lists.fedoraproject.org/archives/list/[email protected]/message/FUU42E7CPYLATXOYVYNW6YTXXULAOV6L/	CVE
https://lists.fedoraproject.org/archives/list/[email protected]/message/OIRJ5UZRXX2KLR4IKBJEQUNGOCXMMDLY/	CVE
https://lists.fedoraproject.org/archives/list/[email protected]/message/PERFILCHFEUGG3OAMC6W55P6DDIBZK4Q/	CVE
https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html	CVE	Mailing List
https://seclists.org/oss-sec/2023/q4/37	CVE	Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202311-14	CVE
https://security.netapp.com/advisory/ntap-20231208-0002/	CVE
https://access.redhat.com/errata/RHSA-2024:2456	[email protected]
https://access.redhat.com/errata/RHSA-2024:3184	[email protected]
https://access.redhat.com/security/cve/CVE-2023-4692	[email protected]	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2236613	[email protected]	Issue TrackingThird Party Advisory
https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/	[email protected]	ExploitThird Party Advisory
https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html	[email protected]	Mailing List
https://seclists.org/oss-sec/2023/q4/37	[email protected]	Mailing ListThird Party Advisory

see all 20 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-787	Out-of-bounds Write	[email protected]
CWE-122	Heap-based Buffer Overflow	[email protected]

Affected Products

Product	Versions
gnu grub2	< 2.12
CPE cpe:2.3:a:gnu:grub2:::::::: Remediation No remediation found in references.
redhat enterprise linux	8.0 9.0
CPE cpe:2.3:o:redhat:enterprise_linux:8.0:::::::* cpe:2.3:o:redhat:enterprise_linux:9.0:::::::* Remediation No remediation found in references.

Change History

18 change records found show changes

Date	Action	Recorded By
Jul 21, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Nov 4, 2025	CVE Modified	CVE
Nov 21, 2024	CVE Modified	CVE
Sep 16, 2024	CVE Modified	[email protected]
May 22, 2024	CVE Modified	[email protected]
May 14, 2024	CVE Modified	[email protected]
May 3, 2024	CVE Modified	[email protected]
Apr 30, 2024	CVE Modified	[email protected]
Apr 29, 2024	CVE Modified	[email protected]
Apr 23, 2024	CVE Modified	[email protected]
Mar 8, 2024	Modified Analysis	[email protected]
Jan 3, 2024	CVE Modified	[email protected]
Dec 8, 2023	CVE Modified	[email protected]
Nov 25, 2023	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Nov 1, 2023	Initial Analysis	[email protected]