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attack-surface.md

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Attack Surface Analysis for korlibs/korge

Attack Surface: Malicious Asset Loading (Images, Audio, Fonts)

  • Description: Exploiting vulnerabilities in image, audio, or font parsing libraries by providing maliciously crafted asset files.
  • Korge Contribution: Korge's asset loading mechanisms are the direct entry point for loading and processing various asset formats (PNG, JPG, MP3, OGG, TTF, etc.). Korge relies on underlying libraries (Kotlin/JVM, platform-specific) for decoding, and vulnerabilities in these libraries are directly exploitable through Korge's asset loading.
  • Example: A game loads a PNG image for a character sprite. The PNG file is crafted to exploit a buffer overflow vulnerability in the image decoding library used by Korge. This leads to application crash (DoS) or potentially remote code execution.
  • Impact: Denial of Service (DoS), potentially Remote Code Execution (RCE), data corruption.
  • Risk Severity: High (RCE potential).
  • Mitigation Strategies:
    • Secure Asset Sources: Prioritize loading assets from trusted and verified sources. For user-generated content, implement strict vetting and scanning processes before assets are loaded by Korge.
    • Keep Korge and Dependencies Updated: Regularly update Korge to benefit from updates to its dependencies, including underlying libraries that handle asset decoding. This is crucial for patching known vulnerabilities.
    • Sandboxing/Isolation (Advanced): Consider isolating asset loading and processing within a sandboxed environment to limit the potential damage from exploits.

Attack Surface: Deserialization of Untrusted Scene/Data Files

  • Description: Exploiting vulnerabilities during the deserialization of game scenes or data files (e.g., JSON, custom formats) loaded from external sources.
  • Korge Contribution: If Korge applications are designed to load game levels, configurations, or other critical data from external files, and if Korge or application code uses insecure deserialization practices, it becomes a direct attack surface. Korge provides the environment where this deserialization takes place and processes the loaded data.
  • Example: A game loads level data from a JSON file downloaded from a server. The JSON deserialization process is vulnerable to injection attacks. A malicious JSON file could be crafted to inject code or manipulate application state during deserialization, leading to RCE.
  • Impact: Remote Code Execution (RCE), data corruption, application logic bypass.
  • Risk Severity: High (RCE potential).
  • Mitigation Strategies:
    • Secure Deserialization Libraries & Practices: Utilize secure and well-vetted deserialization libraries. Implement robust input validation and schema enforcement on deserialized data within the application code that uses Korge.
    • Avoid Deserializing Untrusted Data Directly: Minimize or eliminate the direct deserialization of data from completely untrusted sources. Implement strong authentication and authorization for data sources.
    • Principle of Least Privilege: Run the application with the minimum necessary privileges to contain the impact of potential exploits during deserialization.

Attack Surface: Vulnerabilities in Korge Dependencies

  • Description: Exploiting vulnerabilities present in the third-party libraries and dependencies that Korge directly relies upon.
  • Korge Contribution: Korge's architecture and functionality are built upon a set of dependencies. Vulnerabilities within these direct dependencies of Korge itself (not just general Kotlin/JVM ecosystem, but libraries Korge bundles or explicitly requires) directly impact the security of Korge applications.
  • Example: A critical vulnerability is discovered in a specific version of a graphics library or a core Kotlin library that Korge directly depends on. Applications using the vulnerable Korge version inherit this vulnerability.
  • Impact: Varies depending on the vulnerability, could range from DoS to RCE, data breaches, etc.
  • Risk Severity: Varies (can be Critical to High depending on the dependency and vulnerability).
  • Mitigation Strategies:
    • Dependency Management and Updates (Crucial): Regularly update Korge to the latest stable version. Korge updates often include updates to its dependencies, addressing known vulnerabilities.
    • Monitor Korge Security Advisories: Stay informed about security advisories specifically related to Korge and its direct dependencies. Follow Korge's official communication channels for security updates.

Attack Surface: Outdated Korge Version

  • Description: Using an outdated version of Korge that contains known, publicly disclosed vulnerabilities.
  • Korge Contribution: Directly using an outdated version of Korge is the primary factor. Known vulnerabilities in older Korge versions are directly exploitable in applications built with those versions.
  • Example: A critical security vulnerability is found and patched in Korge version 2.1.0. An application remaining on Korge version 2.0.0 is directly vulnerable to this exploit.
  • Impact: Varies depending on the vulnerability, could range from DoS to RCE, data breaches, etc.
  • Risk Severity: Varies (can be Critical to High depending on the vulnerability).
  • Mitigation Strategies:
    • Regular Korge Updates (Essential): Always use the latest stable version of Korge. Prioritize updating Korge, especially when security updates are announced.
    • Automated Update Processes: Implement processes to regularly check for and apply Korge updates to minimize the window of vulnerability exposure.