CVE-2024-45781 Information

Description

A flaw was found in grub2. When reading a symbolic link’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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

6.7