CVE-2022-26873

The stack buffer overflow vulnerability in PlatformInitAdvancedPreMem leads to arbitrary code execution during PEI phase.

Severity Score

8.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A potential attacker can execute an arbitrary code at the time of the PEI phase 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: PlatformInitAdvancedPreMem SHA256: 644044fdb8daea30a7820e0f5f88dbf5cd460af72fbf70418e9d2e47efed8d9b Module GUID: EEEE611D-F78F-4FB9-B868-55907F169280 This issue affects: AMI Aptio 5.x.

Un atacante potencial puede ejecutar un código arbitrario en el momento de la fase PEI e influir en las etapas de arranque posteriores. Esto puede conllevar a una omisión de las 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: PlatformInitAdvancedPreMem SHA256: 644044fdb8daea30a7820e0f5f88dbf5cd460af72fbf70418e9d2e47efed8d9b GUID del módulo: EEEE611D-F78F-4FB9-B868-55907F169280 Este problema afecta a: AMI Aptio versión 5.x

*Credits: Binarly efiXplorer team

CVSS Scores

NISTv3.1 8.2

Attack Vector

Local

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

2022-03-10 CVE Reserved
2022-09-20 CVE Published
2024-04-01 EPSS Updated
2024-09-16 CVE Updated
2024-09-16 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-121: Stack-based Buffer Overflow
CWE-787: Out-of-bounds Write

CAPEC

References (3)

URL	Tag	Source
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00712.html	Not Applicable

URL	Date	SRC
https://www.binarly.io/advisories/BRLY-2022-027	2024-09-16

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"	-	-	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"	-	-	Affected	in	Intel Search vendor "Intel"	Nuc M15 Laptop Kit Lapbc710 Search vendor "Intel" for product "Nuc M15 Laptop Kit Lapbc710"	-	-	Safe
Ami Search vendor "Ami"		Aptio V Search vendor "Ami" for product "Aptio V"				5.0 Search vendor "Ami" for product "Aptio V" and version "5.0"		-		Affected