FKIE_CVE-2023-4693

Vulnerability from fkie_nvd - Published: 2023-10-25 18:17 - Updated: 2025-11-04 20:17
Severity ?
5.3 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
4.6 (Medium) - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
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.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:2456
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:3184
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2023-4693Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2238343Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/Exploit, Third Party Advisory
secalert@redhat.comhttps://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.htmlMailing List
secalert@redhat.comhttps://seclists.org/oss-sec/2023/q4/37Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:2456
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:3184
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2023-4693Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2238343Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/10/msg00007.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FUU42E7CPYLATXOYVYNW6YTXXULAOV6L/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OIRJ5UZRXX2KLR4IKBJEQUNGOCXMMDLY/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PERFILCHFEUGG3OAMC6W55P6DDIBZK4Q/
af854a3a-2127-422b-91ae-364da2661108https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.htmlMailing List
af854a3a-2127-422b-91ae-364da2661108https://seclists.org/oss-sec/2023/q4/37Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202311-14
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20231208-0002/
Impacted products
Vendor Product Version
gnu grub2 *
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0
To clipboard 

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  "descriptions": [
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      "lang": "en",
      "value": "An out-of-bounds read flaw was found on grub2\u0027s 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."
    },
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      "lang": "es",
      "value": "Se encontr\u00f3 una falla de lectura fuera de los l\u00edmites en el controlador del sistema de archivos NTFS de grub2. Este problema puede permitir que un atacante f\u00edsicamente presente presente una imagen del sistema de archivos NTFS especialmente manipulada para leer ubicaciones de memoria arbitrarias. Un ataque exitoso permite que se filtren datos confidenciales almacenados en cach\u00e9 en la memoria o valores de variables EFI, lo que presenta un alto riesgo de confidencialidad."
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  "lastModified": "2025-11-04T20:17:11.517",
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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.