What is CVE-2023-4949?

CVE-2023-4949 is a high-severity vulnerability in Free Software Foundation Grub-Legacy, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.1/10. Published 2023-11-10.

How severe is CVE-2023-4949?

High severity. CVSS v3 base score is 8.1 out of 10.

Buffer overflow in Free Software Foundation Grub-Legacy

CVE-2023-4949

An attacker with local access to a system (either through a disk or external drive) can present a modified XFS partition to grub-legacy in such a way to exploit a memory corruption in grub’s XFS file system implementation.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (15.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:H.

Affected products

Free Software Foundation Grub-legacy — versions 0
Gnu Grub
Xen

Weakness classification (CWE)

References

cve-coordination@google.com (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2023-4949?: CVE-2023-4949 is a high-severity vulnerability in Free Software Foundation Grub-Legacy, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.1/10. Published 2023-11-10.
How severe is CVE-2023-4949?: High severity. CVSS v3 base score is 8.1 out of 10.