CVE-2023-4693
Grub2: out-of-bounds read at fs/ntfs.c
- State
- Published
- Severity
- 5.3 Medium
- Published
- Oct 25, 2023
- Updated
- Jul 21, 2026
- Reserved
- Aug 31, 2023
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.3 Medium | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N | redhat |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 8Red Hat |
|
Red Hat Enterprise Linux 9Red Hat |
|
Red Hat Enterprise Linux 7Red Hat |
References
- RHSA-2024:2456vendor-advisory
- RHSA-2024:3184vendor-advisory
- https://access.redhat.com/security/cve/CVE-2023-4693vdb-entry
- RHBZ#2238343issue-tracking
- 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
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FUU42E7CPYLATXOYVYNW6YTXXULAOV6L/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OIRJ5UZRXX2KLR4IKBJEQUNGOCXMMDLY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PERFILCHFEUGG3OAMC6W55P6DDIBZK4Q/
- https://security.gentoo.org/glsa/202311-14
- https://security.netapp.com/advisory/ntap-20231208-0002/
- https://lists.debian.org/debian-lts-announce/2023/10/msg00007.html
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