CVE-2023-52711

Severity CVSS v4.0:

Pending analysis

Type:

CWE-284 Improper Access Control

Publication date:

28/05/2024

Last modified:

17/01/2025

Description

Various Issues Due To Exposed SMI Handler in AmdPspP2CmboxV2. The first issue can be leveraged to bypass the protections that have been put in place by previous UEFI phases to prevent direct access to the SPI flash. The second issue can be used to both leak and corrupt SMM memory thus potentially leading code execution in SMM

Impact

Vector 3.x

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

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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