CWE-1272
Sensitive Information Uncleared Before Debug/Power State Transition
Stable
2020-02-24 00:00 +00:00
2023-06-29 00:00 +00:00
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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.
Extended Description
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
Modes Of Introduction
Architecture and DesignApplicable Platforms
Language
Name: VHDL (Undetermined)Name: Verilog (Undetermined)
Class: Hardware Description Language (Undetermined)
Operating Systems
Class: Not OS-Specific (Undetermined)Architectures
Class: Not Architecture-Specific (Undetermined)Technologies
Class: Not Technology-Specific (Undetermined)Common Consequences
| Scope | Impact | Likelihood |
|---|---|---|
| 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 |
Observed Examples
| Reference | Description |
|---|---|
| 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. |
Potential Mitigations
Phases : Architecture and Design // ImplementationDuring state transitions, information not needed in the next state should be removed before the transition to the next state.
Detection Methods
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.Effectiveness : High
Vulnerability Mapping Notes
Rationale : 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.Comments : 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.
Related Attack Patterns
| CAPEC-ID | Attack Pattern Name |
|---|---|
| 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. |
References
REF-1220
Understanding the Security of ARM Debugging FeaturesZhenyu Ning, Fengwei Zhang.
https://www.computer.org/csdl/proceedings-article/sp/2019/666000b156/19skgcwSgsE
Submission
| Name | Organization | Date | Date Release | Version |
|---|---|---|---|---|
| Parbati Kumar Manna, Hareesh Khattri, Arun Kanuparthi | Intel Corporation | 4.1 |
Modifications
| Name | Organization | Date | Comment |
|---|---|---|---|
| CWE Content Team | MITRE | updated Applicable_Platforms, Common_Consequences, Demonstrative_Examples, Description, Name, Potential_Mitigations, Related_Attack_Patterns, Relationships | |
| CWE Content Team | MITRE | updated Functional_Areas | |
| CWE Content Team | MITRE | updated Common_Consequences, Demonstrative_Examples, Description, Detection_Factors, Observed_Examples, Potential_Mitigations, References, Relationships, Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Applicable_Platforms | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes |
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