Nome: 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.

Informações Gerais

Modos de Introdução

Architecture and Design
Implementation

Plataformas Aplicáveis

Linguagem

Classe: Not Language-Specific (Undetermined)

Sistemas Operacionais

Classe: Not OS-Specific (Undetermined)

Arquiteturas

Classe: Not Architecture-Specific (Undetermined)

Tecnologias

Nome: Processor Hardware (Undetermined)
Classe: Not Technology-Specific (Undetermined)

Consequências Comuns

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

Mitigações Potenciais

Phases : Architecture and Design

Métodos de Detecção

Architecture or Design Review

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

Manual Static Analysis - Source Code

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

Notas de Mapeamento de Vulnerabilidade

Justificativa : 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.
Comentário : 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.

Padrões de Ataque Relacionados

CAPEC ID	Nome do Padrão 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.

Referências

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

Submissão

Nome	Organização	Data	Data de lançamento	Version
Arun Kanuparthi, Hareesh Khattri, Parbati Kumar Manna	Intel Corporation	2020-05-20 +00:00	2020-12-10 +00:00	4.3

Modificações

Nome	Organização	Data	Comentário
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

CWE-1318 Detalhe

CWE-1318