CVE-2024-45776 Information

Description

When reading the language .mo file in grub_mofile_open() grub2 fails to verify an integer overflow when allocating its internal buffer. A crafted .mo file may lead the buffer size calculation to overflow leading to out-of-bound reads and writes. This flaw allows an attacker to leak sensitive data or overwrite critical data possibly circumventing 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-2024-45776 https://bugzilla.redhat.com/show_bug.cgi?id=2339182

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