// For flags

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

1
*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
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
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