Détail du CWE-1272

CWE-1272

Sensitive Information Uncleared Before Debug/Power State Transition
Stable
2020-02-24
00h00 +00:00
2025-04-03
00h00 +00:00
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Nom: Sensitive Information Uncleared Before Debug/Power State Transition

The product performs a power or debug state transition, but it does not clear sensitive information that should no longer be accessible due to changes to information access restrictions.

Description du CWE

A device or system frequently employs many power and sleep states during its normal operation (e.g., normal power, additional power, low power, hibernate, deep sleep, etc.). A device also may be operating within a debug condition. State transitions can happen from one power or debug state to another. If there is information available in the previous state which should not be available in the next state and is not properly removed before the transition into the next state, sensitive information may leak from the system.

Informations générales

Modes d'introduction

Architecture and Design

Plateformes applicables

Langue

Name: VHDL (Undetermined)
Name: Verilog (Undetermined)
Class: Hardware Description Language (Undetermined)

Systèmes d’exploitation

Class: Not OS-Specific (Undetermined)

Architectures

Class: Not Architecture-Specific (Undetermined)

Technologies

Class: Not Technology-Specific (Undetermined)

Conséquences courantes

Portée Impact Probabilité
Confidentiality
Integrity
Availability
Access Control
Accountability
Authentication
Authorization
Non-Repudiation		Read Memory, Read Application Data

Note: Sensitive information may be used to unlock additional capabilities of the device and take advantage of hidden functionalities which could be used to compromise device security.		High

Exemples observés

Références Description

CVE-2020-12926

Product software does not set a flag as per TPM specifications, thereby preventing a failed authorization attempt from being recorded after a loss of power.

Mesures d’atténuation potentielles

Phases : Architecture and Design // Implementation
During state transitions, information not needed in the next state should be removed before the transition to the next state.

Méthodes de détection

Manual Analysis

Write a known pattern into each sensitive location. Enter the power/debug state in question. Read data back from the sensitive locations. If the reads are successful, and the data is the same as the pattern that was originally written, the test fails and the device needs to be fixed. Note that this test can likely be automated.
Efficacité : High

Notes de cartographie des vulnérabilités

Justification : 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.
Commentaire : 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.

Modèles d'attaque associés

CAPEC-ID Nom du modèle d'attaque
CAPEC-150 Collect Data from Common Resource Locations
An adversary exploits well-known locations for resources for the purposes of undermining the security of the target. In many, if not most systems, files and resources are organized in a default tree structure. This can be useful for adversaries because they often know where to look for resources or files that are necessary for attacks. Even when the precise location of a targeted resource may not be known, naming conventions may indicate a small area of the target machine's file tree where the resources are typically located. For example, configuration files are normally stored in the /etc director on Unix systems. Adversaries can take advantage of this to commit other types of attacks.
CAPEC-37 Retrieve Embedded Sensitive Data
An attacker examines a target system to find sensitive data that has been embedded within it. This information can reveal confidential contents, such as account numbers or individual keys/credentials that can be used as an intermediate step in a larger attack.
CAPEC-545 Pull Data from System Resources
An adversary who is authorized or has the ability to search known system resources, does so with the intention of gathering useful information. System resources include files, memory, and other aspects of the target system. In this pattern of attack, the adversary does not necessarily know what they are going to find when they start pulling data. This is different than CAPEC-150 where the adversary knows what they are looking for due to the common location.
CAPEC-546 Incomplete Data Deletion in a Multi-Tenant Environment
An adversary obtains unauthorized information due to insecure or incomplete data deletion in a multi-tenant environment. If a cloud provider fails to completely delete storage and data from former cloud tenants' systems/resources, once these resources are allocated to new, potentially malicious tenants, the latter can probe the provided resources for sensitive information still there.

Références

REF-1220

Understanding the Security of ARM Debugging Features
Zhenyu Ning, Fengwei Zhang.
https://www.computer.org/csdl/proceedings-article/sp/2019/666000b156/19skgcwSgsE

Soumission

Nom Organisation Date Date de publication Version
Parbati Kumar Manna, Hareesh Khattri, Arun Kanuparthi Intel Corporation 2020-05-31 +00:00 2020-02-24 +00:00 4.1

Modifications

Nom Organisation Date Commentaire
CWE Content Team MITRE 2020-08-20 +00:00 updated Applicable_Platforms, Common_Consequences, Demonstrative_Examples, Description, Name, Potential_Mitigations, Related_Attack_Patterns, Relationships
CWE Content Team MITRE 2021-03-15 +00:00 updated Functional_Areas
CWE Content Team MITRE 2021-10-28 +00:00 updated Common_Consequences, Demonstrative_Examples, Description, Detection_Factors, Observed_Examples, Potential_Mitigations, References, Relationships, Weakness_Ordinalities
CWE Content Team MITRE 2022-10-13 +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 2025-04-03 +00:00 updated Demonstrative_Examples