Skip to content

Latest commit

 

History

History
48 lines (39 loc) · 3.97 KB

threat-modeling.md

File metadata and controls

48 lines (39 loc) · 3.97 KB

Threat Model Analysis for simd-lite/simd-json

Threat: Malformed JSON Denial of Service

  • Description: An attacker sends specially crafted, malformed JSON data to the application. simd-json's parsing process might get stuck in an infinite loop, consume excessive resources, or crash, leading to a denial of service.
  • Impact: Application becomes unavailable, service disruption, potential server instability.
  • Affected Component: simd-json parsing core, specifically the input validation and error handling logic.
  • Risk Severity: High
  • Mitigation Strategies:
    • Implement input validation before passing data to simd-json to filter out obviously invalid JSON structures.
    • Set timeouts for JSON parsing operations to prevent indefinite processing.
    • Implement resource limits (CPU, memory) for processes handling JSON parsing.
    • Thoroughly test with various malformed JSON inputs and edge cases.

Threat: Buffer Overflow/Underflow during Parsing

  • Description: An attacker sends complex or deeply nested JSON structures, or JSON with very long strings, aiming to trigger a buffer overflow or underflow vulnerability within simd-json's parsing logic. This could allow the attacker to overwrite memory, potentially leading to code execution or denial of service.
  • Impact: Code execution, Denial of Service, Information Disclosure (memory corruption), application crash.
  • Affected Component: simd-json parsing core, memory management within parsing functions.
  • Risk Severity: Critical
  • Mitigation Strategies:
    • Crucially: Keep simd-json updated to the latest stable version to benefit from security patches.
    • Perform fuzzing and security testing of your application's JSON parsing logic, especially with large, complex, and maliciously crafted JSON inputs.
    • Implement limits on the maximum size and complexity of JSON inputs accepted by the application.

Threat: Memory Exhaustion from Large JSON

  • Description: An attacker sends very large JSON documents to consume excessive memory during parsing. This can lead to memory exhaustion, application crashes, or denial of service.
  • Impact: Denial of Service, Application crash, service disruption.
  • Affected Component: simd-json memory allocation during parsing.
  • Risk Severity: High
  • Mitigation Strategies:
    • Implement limits on the maximum size of JSON payloads accepted by the application.
    • Consider streaming JSON parsing if simd-json supports it and if your use case allows to reduce memory footprint.
    • Monitor memory usage and implement resource limits to prevent excessive memory consumption.

Threat: Vulnerabilities in simd-json Library

  • Description: Undiscovered vulnerabilities might exist within the simd-json library code itself. An attacker could exploit these vulnerabilities if they are discovered and become publicly known.
  • Impact: Varies depending on the vulnerability - could range from Denial of Service to Remote Code Execution or Information Disclosure.
  • Affected Component: Entire simd-json library codebase.
  • Risk Severity: Varies (can be Critical to Low depending on the specific vulnerability, considering potential for critical vulnerabilities, we keep it as high priority).
  • Mitigation Strategies:
    • Crucially: Stay informed about security advisories and updates for simd-json.
    • Crucially: Regularly update to the latest stable version of simd-json to benefit from security patches.
    • Subscribe to security mailing lists or monitoring services related to simd-json and its ecosystem.
    • Consider using dependency scanning tools to detect known vulnerabilities in simd-json and its dependencies.