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CVE-2023-4692

UNKNOWN
Published 2023-10-25T10:27:29.173Z
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CVSS Score

V3.1
7.5
/10
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.002
Higher than 0.2% of all CVEs

Attack Vector Metrics

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Unknown Vendor

Unknown Product

Affected Versions:

2.12
Red Hat

Red Hat Enterprise Linux 8

Affected Versions:

1:2.02-156.el8
Red Hat

Red Hat Enterprise Linux 9

Affected Versions:

1:2.06-77.el9
Red Hat

Red Hat Enterprise Linux 7

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-6w7h-fpm5-3ww6

Advisory Details

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.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-4692
WEB https://access.redhat.com/errata/RHSA-2024:2456
WEB https://access.redhat.com/errata/RHSA-2024:3184
WEB https://access.redhat.com/security/cve/CVE-2023-4692
WEB https://bugzilla.redhat.com/show_bug.cgi?id=2236613
WEB https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/FUU42E7CPYLATXOYVYNW6YTXXULAOV6L
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/OIRJ5UZRXX2KLR4IKBJEQUNGOCXMMDLY
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/PERFILCHFEUGG3OAMC6W55P6DDIBZK4Q
WEB https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html
WEB https://seclists.org/oss-sec/2023/q4/37
WEB https://security.gentoo.org/glsa/202311-14
WEB https://security.netapp.com/advisory/ntap-20231208-0002

Advisory provided by GitHub Security Advisory Database. Published: October 25, 2023, Modified: May 22, 2024

References

https://access.redhat.com/errata/RHSA-2024:2456
https://access.redhat.com/errata/RHSA-2024:3184
https://access.redhat.com/security/cve/CVE-2023-4692
https://bugzilla.redhat.com/show_bug.cgi?id=2236613
https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/
https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html
https://seclists.org/oss-sec/2023/q4/37
Published: 2023-10-25T10:27:29.173Z
Last Modified: 2024-11-23T03:30:14.176Z
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