Vulnerability Chain Analysis for Mass-Produced Hardware
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Solution Overview
Problem
Mass-produced electronic products with similar structures often have undetected vulnerabilities due to interactions between hardware and software components, which can lead to critical safety weaknesses when exploited by unauthorized attackers.
Innovation Solution
A method is developed to model the connections and capabilities of individual components within these products, identifying potential vulnerabilities by simulating attacker scenarios and determining critical chains of vulnerabilities, allowing for targeted security enhancements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If products are manufactured in mass production with similar structures, then manufacturing efficiency and cost are improved, but security vulnerabilities increase due to undetected interaction weaknesses between components
Solution Approach 1:
The patent applies preliminary action by performing security analysis before products are deployed. The method creates a model of the product architecture and iteratively analyzes vulnerability chains in advance, allowing security issues to be identified and addressed before mass production and deployment, thus preventing widespread vulnerability propagation across manufactured products
Solution Approach 2:
The patent segments the security analysis process into distinct components: creating a product model with individual components, defining capability models for each component, and iteratively analyzing vulnerability chains. This segmentation allows systematic examination of each component's security properties and their interactions, making the complex security analysis of mass-produced products manageable and scalable
2Adaptability or versatility
If multiple hardware and software components interact in complex ways, then product functionality is improved, but detecting critical vulnerabilities becomes more difficult
Solution Approach 1:
The patent introduces a formal model as an intermediary between the complex product architecture and vulnerability analysis. The model includes structured representations of components, their capabilities, and data connections, serving as a mediator that simplifies the analysis of complex interactions. This intermediary model enables systematic tracing of capability propagation paths without requiring direct analysis of the complex underlying system
Solution Approach 2:
The patent applies parameter changes by representing security properties as formal parameters in the model, such as capability states and vulnerability conditions. By transforming the complex interaction analysis into parameter-based model evaluation, the method enables automated analysis of vulnerability chains while preserving the complexity of component interactions. The iterative capability determination process changes the state parameters to trace potential attack paths
3Reliability
If isolated vulnerabilities are present in individual components, then component-level security is maintained, but critical system-level weaknesses emerge when multiple vulnerabilities interact
Solution Approach 1:
The patent merges individual component vulnerability analyses into a comprehensive system-level assessment. By integrating the capability models of multiple components and analyzing their interactions through the formal model, the method identifies how isolated component vulnerabilities combine to form critical system-level weakness chains, enabling holistic security evaluation that captures emergent system-level risks
Data Source
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AI summary
The invention relates to a method for identifying critical vulnerability chains in an assembly of similarly structured hardware and/or software products. According to the invention, a) these products comprise interconnected components, b) a model for the products is created that contains the following information: i) interconnection information indicating how the individual components are interconnected, and ii) for each of the modeled components, a component model relating to the attainment of capabilities on the respective modeled component, wherein the component model specifies one or more model rules describing which capabilities are attained on the modeled component when predefined capabilities are possessed on a connected component, and c) the products exhibit the properties described in the model.wherein d) an attacker scenario is created with respect to the model by specifying an initial situation regarding the attacker's initial capabilities, wherein at least one additional external component is added to the model, which is connected to at least one modeled component of the system, wherein the functionality of this external component is modeled in particular by a component model as defined in step b) ii), and wherein all or some capabilities on the external component are assigned to the attacker, and/or individual capabilities on one or more of the system components are assigned to the attacker, that e) starting from the capabilities of the attack scenario, taking into account the capabilities already acquired, the connection information and the model rules, further capabilities of the attacker on the individual components are iteratively determined,and that f) a critical vulnerability chain in the modeled product is identified when the attacker, based on the analysis performed, obtains predefined target capabilities on one or more predefined target components.