Vulnerability Details CVE-2023-4693
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 0.7%
CVSS Severity
CVSS v3 Score 5.3
References
- https://access.redhat.com/errata/RHSA-2024:2456
- https://access.redhat.com/errata/RHSA-2024:3184
- https://access.redhat.com/security/cve/CVE-2023-4693
- https://bugzilla.redhat.com/show_bug.cgi?id=2238343
- 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://access.redhat.com/errata/RHSA-2024:2456
- https://access.redhat.com/errata/RHSA-2024:3184
- https://access.redhat.com/security/cve/CVE-2023-4693
- https://bugzilla.redhat.com/show_bug.cgi?id=2238343
- https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/
- 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://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html
- https://seclists.org/oss-sec/2023/q4/37
- https://security.gentoo.org/glsa/202311-14
- https://security.netapp.com/advisory/ntap-20231208-0002/
Products affected by CVE-2023-4693
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cpe:2.3:a:gnu:grub2:-
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cpe:2.3:a:gnu:grub2:1.98
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cpe:2.3:a:gnu:grub2:1.99
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cpe:2.3:a:gnu:grub2:2.00
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cpe:2.3:a:gnu:grub2:2.01
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cpe:2.3:a:gnu:grub2:2.02
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cpe:2.3:a:gnu:grub2:2.04
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cpe:2.3:a:gnu:grub2:2.06
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cpe:2.3:a:gnu:grub2:2.06-150400.7.1
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cpe:2.3:a:gnu:grub2:2.06-18.1
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cpe:2.3:o:redhat:enterprise_linux:8.0
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cpe:2.3:o:redhat:enterprise_linux:9.0