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An out-of-bounds write flaw was found in grub2's NTFS...

High severity Unreviewed Published Oct 25, 2023 to the GitHub Advisory Database • Updated May 22, 2024

Package

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Affected versions

Unknown

Patched versions

Unknown

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.

References

Published by the National Vulnerability Database Oct 25, 2023
Published to the GitHub Advisory Database Oct 25, 2023
Last updated May 22, 2024

Severity

High

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(0th percentile)

Weaknesses

Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Learn more on MITRE.

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer. Learn more on MITRE.

CVE ID

CVE-2023-4692

GHSA ID

GHSA-6w7h-fpm5-3ww6

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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