CVE-2023-4692 (GCVE-0-2023-4692)

Vulnerability from cvelistv5 – Published: 2023-10-25 10:27 – Updated: 2025-11-07 00:30
VLAI?
Title
Grub2: out-of-bounds write at fs/ntfs.c may lead to unsigned code execution
Summary
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 ?
7.5 (High)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Unaffected: 2.12 , < * (custom)
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 1:2.02-156.el8 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:8::baseos
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    Red Hat Red Hat Enterprise Linux 9 Unaffected: 1:2.06-77.el9 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::baseos
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    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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  • 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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