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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

4.6

Related Resources (21)

Url: h=a68e173d82850d8a385b0a13bf09f09fd3703d8f

Url: https://security.netapp.com/advisory/ntap-20231208-0002/

Url: https://security-tracker.debian.org/tracker/CVE-2023-4693

Url: https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FUU42E7CPYLATXOYVYNW6YTXXULAOV6L/

Url: hpb=43651027d24e62a7a463254165e1e46e42aecdea

Url: https://bugzilla.redhat.com/show_bug.cgi?id=2238343

Url: hp=c3c4db117bba35ec8a6c91bfad4fef24730dbed6

Url: a=blobdiff

Url: https://seclists.org/oss-sec/2023/q4/37

Url: https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/

Url: https://access.redhat.com/security/cve/CVE-2023-4693

Url: https://security.gentoo.org/glsa/202311-14

Url: https://git.savannah.gnu.org/gitweb/?p=grub.git

Url: f=grub-core/fs/ntfs.c

Url: https://nvd.nist.gov/vuln/detail/CVE-2023-4693

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OIRJ5UZRXX2KLR4IKBJEQUNGOCXMMDLY/

Url: https://access.redhat.com/errata/RHSA-2024:2456

Url: hb=0ed2458cc4eff6d9a9199527e2a0b6d445802f94

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PERFILCHFEUGG3OAMC6W55P6DDIBZK4Q/

Url: https://www.mend.io/vulnerability-database/CVE-2023-4693

Severity Score

4.6

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:	4.6
Attack Vector (AV):	PHYSICAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	NONE
Availability (A):	NONE

Mend.io Vulnerability Database

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CVE-2023-4693

Date: October 25, 2023

Language: C

Severity Score

Related Resources (21)

Severity Score

Weakness Type (CWE)

CVSS v3.1

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