Skip to content

Latest commit

 

History

History
72 lines (63 loc) · 8.07 KB

threat-modeling.md

File metadata and controls

72 lines (63 loc) · 8.07 KB

Threat Model Analysis for unoplatform/uno

Threat: Dependency Hijacking (NuGet/Platform Dependencies)

  • Description: An attacker compromises a NuGet package specifically tailored for Uno Platform or a platform-specific dependency that Uno Platform relies on. The attacker injects malicious code into this dependency, which is then executed within the context of the Uno application due to Uno's cross-platform build process. This is distinct from general dependency hijacking because the compromised component is integral to Uno's operation.
  • Impact:
    • Complete application compromise (attacker gains full control, potentially across all supported platforms due to Uno's nature).
    • Data breaches.
    • Malware distribution.
    • Loss of user trust.
  • Affected Uno Component: The entire Uno application, as any compromised Uno-specific dependency could affect any part of the system. Specifically, the build process that incorporates Uno packages and the Uno runtime environment that loads and executes these dependencies.
  • Risk Severity: Critical
  • Mitigation Strategies:
    • Software Composition Analysis (SCA): Use SCA tools, paying particular attention to Uno-specific packages and their transitive dependencies.
    • Dependency Pinning: Specify exact versions of all Uno-related dependencies to prevent unexpected updates.
    • Private NuGet Feed: Use a private NuGet feed to control which Uno packages are available to the build process.
    • Regular Dependency Audits: Regularly audit Uno-related dependencies for known vulnerabilities and update them promptly.
    • Source Code Analysis: Use static analysis tools to scan Uno dependencies for potential security issues.
    • Vulnerability Scanning: Integrate vulnerability scanning into the CI/CD pipeline, specifically targeting Uno components.

Threat: Platform-Specific Data Leakage (Uno Abstraction Flaw)

  • Description: A flaw within Uno Platform's abstraction layer for a specific platform (e.g., iOS, Android, WASM) causes sensitive data to be leaked. This is not a general platform vulnerability, but a bug in Uno's code that handles platform-specific APIs or data management. For example, Uno's iOS implementation might incorrectly handle memory, leading to a crash dump containing sensitive data, a scenario unique to Uno's bridging of .NET to iOS.
  • Impact:
    • Data breaches (sensitive user data exposed).
    • Privacy violations.
    • Compliance violations (e.g., GDPR, CCPA).
  • Affected Uno Component: The platform-specific implementation of Uno's core components (e.g., Uno.UI.iOS, Uno.UI.Android, Uno.UI.Wasm). Specifically, any Uno component that interacts with platform APIs or manages sensitive data through Uno's abstraction.
  • Risk Severity: High
  • Mitigation Strategies:
    • Platform-Specific Testing: Thoroughly test the application on all target platforms, paying extra attention to how Uno handles data and memory on each platform.
    • Platform-Specific Security Analysis: Use platform-specific security analysis tools (e.g., Xcode Instruments, Android Lint), focusing on areas where Uno interacts with the platform.
    • Secure Data Storage: Use platform-specific secure storage mechanisms, but verify that Uno's interaction with these mechanisms is secure.
    • Data Sanitization: Sanitize data before displaying it or logging it, considering potential Uno-specific vulnerabilities.
    • Least Privilege: Grant the application only the necessary permissions, and verify that Uno correctly enforces these permissions.
    • Code Reviews: Conduct thorough code reviews, specifically targeting Uno's platform-specific code and data handling logic.

Threat: Uno Runtime Code Injection

  • Description: An attacker exploits a vulnerability within the Uno Platform runtime itself (e.g., in Uno's XAML parsing engine, Uno's JavaScript interop implementation, or a platform-specific Uno component) to inject and execute arbitrary code. This is distinct from general code injection because it targets the core of Uno's execution environment.
  • Impact:
    • Complete application compromise (across all platforms supported by the vulnerable Uno runtime).
    • Data breaches.
    • Malware distribution.
    • System compromise (if the attacker can escalate privileges through the compromised Uno runtime).
  • Affected Uno Component: The Uno Platform runtime itself (e.g., Uno.UI.dll, platform-specific Uno runtime components). Specifically, any Uno component that handles untrusted input or interacts with the underlying operating system as part of Uno's core functionality.
  • Risk Severity: Critical
  • Mitigation Strategies:
    • Keep Uno Updated: Always use the absolute latest version of the Uno Platform, which includes security patches specifically addressing runtime vulnerabilities.
    • Input Validation and Sanitization: Rigorously validate and sanitize all input, even if it's processed by Uno's internal components, as this is a potential attack vector.
    • Secure Coding Practices: Follow secure coding practices when developing with Uno, to minimize the risk of introducing vulnerabilities that could be exploited through the runtime.
    • Security Audits: Conduct regular security audits, specifically focusing on the interaction between your application code and the Uno Platform runtime.
    • Vulnerability Disclosure Program: Participate in Uno's vulnerability disclosure program (if they have one) to report any security issues you find in the Uno runtime.
    • Avoid Untrusted Components: Be extremely cautious when using third-party Uno components, and thoroughly vet them for security, as they could introduce vulnerabilities into the Uno runtime environment.

Threat: Permission Escalation (via Uno Abstraction)

  • Description: A flaw within Uno Platform's abstraction layer for platform permissions allows the application to gain access to permissions it shouldn't have. This is not a general platform permission issue, but a bug in Uno's code that handles permission requests and enforcement across different platforms. An attacker might exploit this Uno-specific vulnerability to access sensitive data or perform unauthorized actions.
  • Impact:
    • Data breaches (access to unauthorized data).
    • Privacy violations.
    • System compromise (if the attacker can gain elevated privileges through the compromised Uno permission handling).
  • Affected Uno Component: Uno's platform-specific permission handling components (e.g., the code that requests and manages permissions on iOS, Android, etc., within the Uno framework). The abstraction layer for permissions provided by Uno.
  • Risk Severity: High
  • Mitigation Strategies:
    • Principle of Least Privilege: Request only the minimum necessary permissions, and verify that Uno correctly translates these requests across platforms.
    • Platform-Specific Testing: Thoroughly test permission handling on all target platforms, specifically focusing on how Uno interacts with the platform's permission system.
    • Security Analysis Tools: Use platform-specific security analysis tools, paying attention to how Uno requests and uses permissions.
    • Avoid Custom Permission APIs: Prefer standard, well-tested Uno-provided permission APIs.
    • Regular Permission Review: Regularly review the application's permissions, and ensure that Uno is not granting more permissions than intended.
    • Runtime Permission Checks: Implement runtime checks within your application code, even if relying on Uno's permission handling, to ensure that the application has the necessary permissions before performing sensitive operations.