Security Audit

Security Audit

Run a security audit on the current codebase or changes.

Usage

/security-audit            # Quick mode (default): <60 seconds, changed files only
/security-audit --full     # Full mode: 5-10 minutes, entire codebase

Modes

Quick Mode (default)

• Scope: changed files only (git diff)
• Checks: Secrets, Injection, Auth (categories 1-3)
• Time limit: 60 seconds
• Best for: pre-commit, pre-push reviews

Full Mode (--full)

• Scope: entire codebase
• Checks: All 6 categories
• Time limit: 10 minutes
• Best for: release preparation, initial audits, compliance

Constraints

• DO NOT modify, fix, or patch any code during the audit
• DO NOT commit changes or alter git state
• Only report vulnerabilities and suggest remediations — never apply them

Process

Quick Mode

1. Run git diff --staged (or git diff, or git diff HEAD~1) to scope
2. Read changed files and their direct imports
3. Check categories 1-3 (Secrets, Injection, Auth)
4. Run quick-scan.sh on changed files
5. Output findings

Full Mode

1. Identify all source files in the project
2. Read ALL source files and their dependencies
3. Check all 6 categories below
4. Run automated checks
5. Output structured findings

Audit Categories

1. Secrets & Credentials (CRITICAL)

• No hardcoded API keys, tokens, passwords, private keys in source
• .env files in .gitignore
• No secrets in git history: git log -p --all -S 'password\|secret\|api_key\|private_key'
• No secrets in error messages or logs
• Run grep -rn 'AKIA\|sk-\|ghp_' . for common key patterns

2. Injection (CRITICAL)

• SQL: Parameterized queries only, no string concatenation
• XSS: All user input sanitized before rendering, dangerouslySetInnerHTML audited
• Command injection: No exec(), eval(), child_process.exec() with user input
• Path traversal: No ../ in file paths from user input, use path.resolve() + validation
• Template injection: No user input in template strings evaluated server-side
• NoSQL injection: Validate MongoDB query operators from user input

3. Authentication & Authorization (CRITICAL)

• All protected routes have auth middleware
• JWT: proper validation, expiration, secure storage (httpOnly cookies, not localStorage)
• Password hashing: bcrypt/argon2 with proper salt rounds (>=12)
• Session management: regenerate on login, invalidate on logout
• RBAC/ABAC: permission checks on every sensitive endpoint
• Rate limiting on auth endpoints (login, register, password reset)

4. Data Protection (HIGH)

• HTTPS only, HSTS headers
• Sensitive data encrypted at rest (passwords, PII, financial data)
• CORS properly configured (not * in production)
• Content-Security-Policy headers set
• No PII in logs, analytics, or error tracking
• Cookie flags: Secure, HttpOnly, SameSite

5. Dependency Security (HIGH)

• Run npm audit / pip audit / cargo audit
• Check for known vulnerabilities in dependencies
• No unnecessary permissions in dependency manifests
• Lock file committed (package-lock.json, poetry.lock)
• Verify dependency integrity (checksums)

6. Infrastructure (MEDIUM)

• Environment variables for all configuration
• No debug mode in production
• Error messages don't leak stack traces or internal paths
• File upload: type validation, size limits, virus scanning
• Database: connection pooling, query timeouts, prepared statements

Quick Scan Script

Run the bundled automated scanner for common vulnerabilities:

bash ~/.claude/skills/security-audit/scripts/quick-scan.sh .

This checks: hardcoded secrets (AWS, OpenAI, GitHub, Slack patterns), dangerous functions (eval, exec, innerHTML), .env in git, and dependency audit.

Manual Checks

# JavaScript/TypeScript
npm audit --production
npx eslint --no-eslintrc -c '{"rules":{"no-eval":"error","no-implied-eval":"error"}}' .

# Python
pip audit
ruff check --select S .  # security rules

# Git history
git log --all --oneline -S 'password' --diff-filter=A
git log --all --oneline -S 'secret' --diff-filter=A

# Common patterns
grep -rn 'eval(' --include='*.ts' --include='*.tsx' --include='*.js' .
grep -rn 'dangerouslySetInnerHTML' --include='*.tsx' --include='*.jsx' .
grep -rn 'innerHTML' --include='*.ts' --include='*.js' .