7.8

CVE-2023-4692

Exploit

Grub2: out-of-bounds write at fs/ntfs.c may lead to unsigned code execution

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Gnu ≫ Grub2 Version < 2.12
Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Enterprise Linux Version9.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.54% 0.409
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
secalert@redhat.com 7.5 0.8 6
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE-122 Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://security.gentoo.org/glsa/202311-14
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
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2236613
Third Party Advisory
Issue Tracking
https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/
Third Party Advisory
Exploit
https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html
Mailing List
https://seclists.org/oss-sec/2023/q4/37
Third Party Advisory
Mailing List
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.netapp.com/advisory/ntap-20231208-0002/
https://lists.debian.org/debian-lts-announce/2023/10/msg00007.html