CVE-2024-45781

Severity CVSS v4.0:

Pending analysis

Type:

CWE-787 Out-of-bounds Write

Publication date:

18/02/2025

Last modified:

13/05/2025

Description

A flaw was found in grub2. When reading a symbolic link&#39;s name from a UFS filesystem, grub2 fails to validate the string length taken as an input. The lack of validation may lead to a heap out-of-bounds write, causing data integrity issues and eventually allowing an attacker to circumvent secure boot protections.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

6.70

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

https://access.redhat.com/errata/RHSA-2025:6990
https://access.redhat.com/security/cve/CVE-2024-45781
https://bugzilla.redhat.com/show_bug.cgi?id=2345857