The aggregate-library (aLib) project takes security seriously. As a specification repository defining cross-language Common Library operations, security considerations are paramount.

This security policy covers:

• The specification documents themselves
• Test cases and examples
• Documentation and metadata
• Repository infrastructure

The Common Library specifications are designed with security in mind:

1. Input Validation: All specifications include preconditions and constraints
2. Edge Cases: Specifications document security-relevant edge cases
3. Implementation-Defined Behavior: Security-critical behaviors are clearly marked
4. No Network Operations: All operations are offline-first and air-gap compatible
5. Minimal Attack Surface: Only 20 core operations with well-defined semantics

When implementing these specifications:

• Validate Inputs: Always validate inputs according to specification preconditions
• Handle Edge Cases: Implement proper handling for all documented edge cases
• Avoid Undefined Behavior: Never rely on implementation-defined or undefined behavior for security
• Use Safe Practices: Follow language-specific security best practices
• Test Thoroughly: Run all provided test cases plus security-specific tests

• Division by zero must be handled safely (error or defined behavior)
• Integer overflow/underflow in edge cases

• Buffer overflow risks in substring operations (bounds checking required)
• Unicode handling edge cases (normalization, encoding)
• Memory allocation for string concatenation

• Resource exhaustion with large collections
• Function evaluation side effects in map/filter/fold
• Iterator invalidation in mutable implementations

• Floating-point comparison precision issues
• NaN handling in equality checks
• Timing attacks in string comparison (for security-sensitive implementations)

We appreciate responsible disclosure of security issues.

DO NOT open a public issue for security vulnerabilities.

Instead, report security issues via one of these channels:

1. Email: Send details to security@[project-domain] (when available)
2. GitHub Security Advisory: Use the "Security" tab to privately report
3. Issue Tracker: For non-critical security concerns, open a public issue with tag security

Your security report should include:

• Description: Clear description of the vulnerability
• Impact: What could an attacker achieve?
• Affected Components: Which specifications or examples are affected?
• Reproduction: Step-by-step reproduction instructions
• Suggested Fix: If you have one, propose a solution
• Disclosure Timeline: Your expected timeline for public disclosure

We aim to respond according to this schedule:

• Initial Response: Within 72 hours of report
• Triage: Within 1 week - severity assessment and initial analysis
• Fix Development: Depends on severity (critical: days, high: weeks, medium: months)
• Public Disclosure: After fix is available and deployed, coordinated with reporter

We assess vulnerabilities according to these severity levels:

Critical (CVSS 9.0-10.0)

• Specification flaws enabling arbitrary code execution in correct implementations
• Universal vulnerabilities affecting all language implementations
• Response: Immediate triage, fix within days

High (CVSS 7.0-8.9)

• Specification ambiguities leading to exploitable behaviors
• Security-relevant undefined behavior
• Response: Fix within 1-2 weeks

Medium (CVSS 4.0-6.9)

• Edge cases with security implications
• Documentation gaps affecting security
• Response: Fix within 1-3 months

Low (CVSS 0.1-3.9)

• Minor documentation issues
• Theoretical vulnerabilities with no practical exploit
• Response: Fix in next planned release

• Explicitly document security-relevant behaviors
• Provide test cases covering edge cases
• Mark implementation-defined behaviors clearly
• Consider attack vectors in specification design

• Follow specification preconditions strictly
• Implement all test cases
• Add security-specific test cases
• Use language-specific security tools (sanitizers, static analyzers)
• Document deviations from specification
• Use fuzzing for operation implementations
• Perform security audits before production use

• Use implementations from trusted sources
• Verify test compliance before deploying
• Report specification ambiguities that could affect security
• Follow implementation-specific security guidance

Recommended security tools for implementing aLib:

• Rust: clippy, cargo-audit
• Ada: SPARK prover, CodePeer
• TypeScript: tsc strict mode, ESLint security plugins
• Elixir: Credo, Sobelow
• Haskell: HLint, Stan

• cargo-fuzz (Rust)
• AFL, libFuzzer (C/Ada)
• QuickCheck (Haskell)
• PropEr (Elixir)

• Address Sanitizer (C/C++/Rust)
• Memory Sanitizer
• Undefined Behavior Sanitizer

We thank security researchers who responsibly disclose vulnerabilities. Contributors will be acknowledged in:

• CHANGELOG.md
• Security advisories
• Project documentation

This security policy is provided under the same dual license as the project (MIT / Palimpsest v0.8). Security researchers acting in good faith are protected from legal action.

This security policy is versioned with the project. Last updated: 2025-11-22

For the current version, see: https://github.com/Hyperpolymath/aggregate-library/blob/main/SECURITY.md