CVE-2022-40246

Arbitrary write vulnerability in SbPei module leads to arbitrary code execution during PEI phase.

Severity Score

7.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A potential attacker can write one byte by arbitrary address at the time of the PEI phase (only during S3 resume boot mode) and influence the subsequent boot stages. This can lead to the mitigations bypassing, physical memory contents disclosure, discovery of any secrets from any Virtual Machines (VMs) and bypassing memory isolation and confidential computing boundaries. Additionally, an attacker can build a payload which can be injected into the SMRAM memory. This issue affects: Module name: SbPei SHA256: d827182e5f9b7a9ff0b9d3e232f7cfac43b5237e2681e11f005be627a49283a9 Module GUID: c1fbd624-27ea-40d1-aa48-94c3dc5c7e0d

Un atacante potencial puede escribir un byte por dirección arbitraria en el momento de la fase PEI (sólo durante el modo de arranque de reanudación S3) e influir en las etapas de arranque posteriores. Esto puede conllevar a una omisión de mitigaciones, revelación del contenido de la memoria física, detección de cualquier secreto de cualquier máquina virtual (VM) y omisión del aislamiento de la memoria y de los límites informáticos confidenciales. Además, un atacante puede construir una carga útil que puede ser inyectada en la memoria SMRAM. Este problema afecta: Nombre del módulo: SbPei SHA256: d827182e5f9b7a9ff0b9d3e232f7cfac43b5237e2681e11f005be627a49283a9 GUID del módulo: c1fbd624-27ea-40d1-aa48-94c3dc5c7e0d

*Credits: Binarly efiXplorer team

CVSS Scores

NISTv3.1 7.2

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-09-08 CVE Reserved
2022-09-20 CVE Published
2024-03-03 EPSS Updated
2024-09-17 CVE Updated
2024-09-17 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-123: Write-what-where Condition
CWE-787: Out-of-bounds Write

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://www.binarly.io/advisories/BRLY-2022-014	2024-09-17

URL	Date	SRC

URL	Date	SRC
https://www.ami.com/security-center	2022-09-26

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Intel Search vendor "Intel"	Nuc M15 Laptop Kit Lapbc510 Firmware Search vendor "Intel" for product "Nuc M15 Laptop Kit Lapbc510 Firmware"	0072 Search vendor "Intel" for product "Nuc M15 Laptop Kit Lapbc510 Firmware" and version "0072"	-	Affected	in	Intel Search vendor "Intel"	Nuc M15 Laptop Kit Lapbc510 Search vendor "Intel" for product "Nuc M15 Laptop Kit Lapbc510"	-	-	Safe
Intel Search vendor "Intel"	Nuc M15 Laptop Kit Lapbc710 Firmware Search vendor "Intel" for product "Nuc M15 Laptop Kit Lapbc710 Firmware"	0072 Search vendor "Intel" for product "Nuc M15 Laptop Kit Lapbc710 Firmware" and version "0072"	-	Affected	in	Intel Search vendor "Intel"	Nuc M15 Laptop Kit Lapbc710 Search vendor "Intel" for product "Nuc M15 Laptop Kit Lapbc710"	-	-	Safe