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CVE-2023-4693

Date: October 25, 2023

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.

Language: C

Severity Score

Related Resources (16)

https://security.netapp.com/advisory/ntap-20231208-0002/
https://security-tracker.debian.org/tracker/CVE-2023-4693
https://access.redhat.com/errata/RHSA-2024:3184
https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FUU42E7CPYLATXOYVYNW6YTXXULAOV6L/
https://bugzilla.redhat.com/show_bug.cgi?id=2238343
https://seclists.org/oss-sec/2023/q4/37
https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/
https://access.redhat.com/security/cve/CVE-2023-4693
https://security.gentoo.org/glsa/202311-14
https://git.savannah.gnu.org/gitweb/?p=grub.git
https://nvd.nist.gov/vuln/detail/CVE-2023-4693
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OIRJ5UZRXX2KLR4IKBJEQUNGOCXMMDLY/
https://access.redhat.com/errata/RHSA-2024:2456
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PERFILCHFEUGG3OAMC6W55P6DDIBZK4Q/
https://www.mend.io/vulnerability-database/CVE-2023-4693

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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