CVE-2023-4692
Public on 2023-10-06
Modified on 2024-02-01
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.
Severity
CVSS v3 Base Score
See breakdown
Affected Packages
Platform | Package | Release Date | Advisory | Status |
---|---|---|---|---|
Amazon Linux 1 | grub | Not Affected | ||
Amazon Linux 2 - Core | grub2 | 2023-10-12 | ALAS2-2023-2292 | Fixed |
Amazon Linux 2023 | grub2 | 2023-10-30 | ALAS2023-2023-408 | Fixed |
Amazon Linux 2023 | grub2 | 2023-10-30 | ALAS2023-2023-409 | Fixed |
CVSS Scores
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv3 | 2.5 | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N |
NVD | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |