名前: Improper Isolation of Shared Resources in Network On Chip (NoC)

The Network On Chip (NoC) does not isolate or incorrectly isolates its on-chip-fabric and internal resources such that they are shared between trusted and untrusted agents, creating timing channels.

一般情報

背景の詳細

導入モード

Architecture and Design
Implementation

適用可能なプラットフォーム

言語

クラス： Not Language-Specific (Undetermined)

オペレーティングシステム

クラス： Not OS-Specific (Undetermined)

アーキテクチャ

クラス： Not Architecture-Specific (Undetermined)

テクノロジー

名前： Security Hardware (Undetermined)
クラス： Not Technology-Specific (Undetermined)

一般的な結果

スコープ	影響	可能性
Confidentiality Availability	DoS: Resource Consumption (Other), Varies by Context, Other 注記：Attackers may infer data that belongs to a trusted agent. The methods used to perform this attack may result in noticeably increased resource consumption.	Medium

観察された例

参考文献	説明
CVE-2021-33096	Improper isolation of shared resource in a network-on-chip leads to denial of service

潜在的な緩和策

Phases : Architecture and Design // Implementation
Implement priority-based arbitration inside the NoC and have dedicated buffers or virtual channels for routing secret data from trusted agents.

検出方法

Manual Analysis

Providing marker flags to send through the interfaces coupled with examination of which users are able to read or manipulate the flags will help verify that the proper isolation has been achieved and is effective.
有効性 : Moderate

脆弱性マッピングノート

理由 : 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.
コメント : 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.

関連する攻撃パターン

CAPEC ID	攻撃パターン名
CAPEC-124	Shared Resource Manipulation An adversary exploits a resource shared between multiple applications, an application pool or hardware pin multiplexing to affect behavior. Resources may be shared between multiple applications or between multiple threads of a single application. Resource sharing is usually accomplished through mutual access to a single memory location or multiplexed hardware pins. If an adversary can manipulate this shared resource (usually by co-opting one of the applications or threads) the other applications or threads using the shared resource will often continue to trust the validity of the compromised shared resource and use it in their calculations. This can result in invalid trust assumptions, corruption of additional data through the normal operations of the other users of the shared resource, or even cause a crash or compromise of the sharing applications.

参考文献

REF-1155

SurfNoC: A Low Latency and Provably Non-Interfering Approach to Secure Networks-On-Chip
Hassan M. G. Wassel, Ying Gao, Jason K. Oberg, Tedd Huffmire, Ryan Kastner, Frederic T. Chong, Timothy Sherwood.
http://cseweb.ucsd.edu/~kastner/papers/isca13-surfNOC.pdf

REF-1241

Network on a chip
Wikipedia.
https://en.wikipedia.org/wiki/Network_on_a_chip

REF-1242

A Survey of Network-on-Chip Security Attacks and Countermeasures
Subodha Charles, Prabhat Mishra.
https://dl.acm.org/doi/fullHtml/10.1145/3450964

REF-1245

Design of Secure and Trustworthy Network-on-chip Architectures
Subodha Charles.
https://www.cise.ufl.edu/research/cad/Publications/charlesThesis.pdf

登録情報

名前	組織	日付	リリース日	Version
Arun Kanuparthi, Hareesh Khattri, Parbati K. Manna	Intel Corporation	2020-05-23 +00:00	2020-12-10 +00:00	4.3

変更履歴

名前	組織	日付	コメント
CWE Content Team	MITRE	2021-10-28 +00:00	updated Background_Details, Demonstrative_Examples, Description, Detection_Factors, Name, References, Relationships, Weakness_Ordinalities
CWE Content Team	MITRE	2022-04-28 +00:00	updated Applicable_Platforms, References
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	2023-10-26 +00:00	updated Observed_Examples

CWE-1331 詳細

CWE-1331