Nombre: Missing Support for Security Features in On-chip Fabrics or Buses

On-chip fabrics or buses either do not support or are not configured to support privilege separation or other security features, such as access control.

Informaciones generales

Modos de introducción

Architecture and Design
Implementation

Plataformas aplicables

Lenguaje

Clase: Not Language-Specific (Undetermined)

Sistemas operativos

Clase: Not OS-Specific (Undetermined)

Arquitecturas

Clase: Not Architecture-Specific (Undetermined)

Tecnologías

Nombre: Processor Hardware (Undetermined)
Clase: Not Technology-Specific (Undetermined)

Consecuencias comunes

Alcance	Impacto	Probabilidad
Confidentiality Integrity Access Control Availability	DoS: Crash, Exit, or Restart, Read Memory, Modify Memory	Medium

Mitigaciones potenciales

Phases : Architecture and Design

Métodos de detección

Architecture or Design Review

Review the fabric specification and ensure that it contains signals to transfer security-sensitive signals.
Efectividad : High

Manual Static Analysis - Source Code

Lack of security features can also be confirmed through manual RTL review of the fabric RTL.
Efectividad : High

Notas de mapeo de vulnerabilidades

Justificación : This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Comentario : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

Patrones de ataque relacionados

CAPEC ID	Nombre del patrón de ataque
CAPEC-1	Accessing Functionality Not Properly Constrained by ACLs In applications, particularly web applications, access to functionality is mitigated by an authorization framework. This framework maps Access Control Lists (ACLs) to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application, or can run queries for data that they otherwise not supposed to.
CAPEC-180	Exploiting Incorrectly Configured Access Control Security Levels An attacker exploits a weakness in the configuration of access controls and is able to bypass the intended protection that these measures guard against and thereby obtain unauthorized access to the system or network. Sensitive functionality should always be protected with access controls. However configuring all but the most trivial access control systems can be very complicated and there are many opportunities for mistakes. If an attacker can learn of incorrectly configured access security settings, they may be able to exploit this in an attack.

Referencias

REF-1139

AMBA APB Protocol Specification, Version 2.0
ARM.
https://www.eecs.umich.edu/courses/eecs373/readings/IHI0024C_amba_apb_protocol_spec.pdf

REF-1140

Open Core Protocol Specification, Release 2.2
OCP-IP.
http://read.pudn.com/downloads95/doc/388103/OCPSpecification%202.2.pdf

Envío

Nombre	Organización	Fecha	Fecha de lanzamiento	Version
Arun Kanuparthi, Hareesh Khattri, Parbati Kumar Manna	Intel Corporation	2020-05-20 +00:00	2020-12-10 +00:00	4.3

Modificaciones

Nombre	Organización	Fecha	Comentario
CWE Content Team	MITRE	2022-04-28 +00:00	updated Applicable_Platforms
CWE Content Team	MITRE	2022-06-28 +00:00	updated Applicable_Platforms
CWE Content Team	MITRE	2023-04-27 +00:00	updated Relationships
CWE Content Team	MITRE	2023-06-29 +00:00	updated Mapping_Notes
CWE Content Team	MITRE	2025-12-11 +00:00	updated Weakness_Ordinalities
CWE Content Team	MITRE	2026-10-28 +00:00	updated Demonstrative_Examples, Description, Dimensions, Modes_of_Introduction, Potential_Mitigations

Detalle CWE-1318

CWE-1318