{"id":"CVE-2023-4692","details":"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.","modified":"2026-04-16T00:07:41.156715137Z","published":"2023-10-25T18:17:41.743Z","related":["ALSA-2024:2456","ALSA-2024:3184","SUSE-SU-2023:4085-1","SUSE-SU-2023:4130-1","SUSE-SU-2023:4140-1","SUSE-SU-2023:4141-1","SUSE-SU-2025:01961-1","openSUSE-SU-2024:13328-1"],"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00007.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PERFILCHFEUGG3OAMC6W55P6DDIBZK4Q/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FUU42E7CPYLATXOYVYNW6YTXXULAOV6L/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OIRJ5UZRXX2KLR4IKBJEQUNGOCXMMDLY/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:2456"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-4692"},{"type":"ADVISORY","url":"https://seclists.org/oss-sec/2023/q4/37"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:3184"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202311-14"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20231208-0002/"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2236613"},{"type":"ARTICLE","url":"https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html"},{"type":"EVIDENCE","url":"https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-4692.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"2.12"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}