Buffer overflow in Gnu Grub2

CVE-2024-56737

GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem.

Vulnerability class: Buffer Overflow

EPSS: 0.007 (49.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Gnu Grub2 — versions 2.00

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

Public proof-of-concept exploits

yo-yo-yo-jbo/yo-yo-yo-jbo.github.io

References

cve@mitre.org (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2024-56737?: CVE-2024-56737 is a high-severity vulnerability in Gnu Grub2, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2024-12-29.
How severe is CVE-2024-56737?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2024-56737 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.