STRIDE + OWASP Security Checklist

Reference checklist for ck:security audits. Use during Step 2 (STRIDE Analysis) and Step 3 (OWASP Top 10 Check).

STRIDE Checklist

Spoofing (Authentication)

All endpoints require authentication (unless intentionally public)
Passwords hashed with bcrypt/argon2 — not MD5 or SHA1
JWT tokens have expiration (exp) and are validated server-side
Session management uses Secure, HttpOnly, SameSite cookie flags
Multi-factor auth available for sensitive operations
OAuth/OIDC flows use state parameter to prevent CSRF
Default credentials removed from all services and dependencies

Tampering (Integrity)

Input validation on all user-supplied data (type, length, format)
Parameterized queries used — no string concatenation for SQL/NoSQL
CSRF tokens present on all state-changing forms
Request signing for API-to-API calls (HMAC or mTLS)
File uploads validated for type (magic bytes), size, and content
Deserialization of untrusted data avoided or sandboxed
HTTP methods restricted per endpoint (no GET for mutations)

Repudiation (Logging)

Authentication events logged: login, logout, failures
Authorization failures logged with user/resource context
Data modification events logged with actor and timestamp
Logs do not contain sensitive data (passwords, tokens, PII)
Log integrity protected — append-only storage or centralized sink
Logs retained per compliance requirements (90 days minimum)

Information Disclosure

Error messages do not leak stack traces in production
API responses exclude internal IDs, system paths, or version strings
Sensitive data encrypted at rest (AES-256 or equivalent)
All transport uses TLS 1.2+ — no HTTP for sensitive endpoints
No hardcoded secrets in source code (see Secret Patterns below)
.env files and credential files listed in .gitignore
API responses filtered to minimum necessary fields (no over-fetching)

Denial of Service

Rate limiting on authentication and sensitive endpoints
Request body size limits configured at server/gateway level
Pagination enforced on all list endpoints (no unbounded queries)
Timeouts set on all external API and database calls
Connection pools sized and cleaned up properly
Regex patterns reviewed for catastrophic backtracking (ReDoS)
Background jobs have concurrency limits and dead-letter queues

Elevation of Privilege

Role-based access control (RBAC) enforced server-side, not client-side
Horizontal privilege checks: user A cannot access user B's resources (IDOR)
Admin endpoints have separate, stricter auth middleware
Privilege escalation paths require re-authentication
Service accounts use principle of least privilege
Third-party integrations scoped to minimum required permissions

OWASP Top 10 Quick Reference

#	Category	What to Check
A01	Broken Access Control	Missing auth checks, IDOR vulnerabilities, CORS misconfiguration, path traversal
A02	Cryptographic Failures	Weak hashing (MD5/SHA1), plaintext storage, missing TLS, weak cipher suites
A03	Injection	SQL, NoSQL, OS command, LDAP, template injection via unsanitized input
A04	Insecure Design	Missing threat model, business logic flaws, no abuse-case testing
A05	Security Misconfiguration	Default credentials, verbose error pages, unnecessary features/ports enabled
A06	Vulnerable Components	Outdated dependencies, known CVEs, unpatched libraries
A07	Auth Failures	Brute force possible, credential stuffing, session fixation, weak tokens
A08	Data Integrity Failures	Unsigned updates, unverified deserialization, CI/CD pipeline compromise
A09	Logging Failures	Missing security event logs, no alerting, insufficient monitoring coverage
A10	SSRF	Unvalidated user-supplied URLs, internal service access via fetch/curl

Secret Patterns to Detect

Scan source files for the following regex patterns. Any match is a Critical finding.

# Generic API keys
(?i)(api[_-]?key|apikey)\s*[:=]\s*['"][A-Za-z0-9\-_]{20,}['"]

# AWS access key IDs
AKIA[0-9A-Z]{16}

# AWS secret access keys
(?i)aws[_-]?secret[_-]?access[_-]?key\s*[:=]\s*['"][A-Za-z0-9/+]{40}['"]

# JSON Web Tokens
eyJ[A-Za-z0-9_-]+\.eyJ[A-Za-z0-9_-]+\.[A-Za-z0-9_-]+

# Generic passwords in config/code
(?i)(password|passwd|pwd)\s*[:=]\s*['"][^'"]{8,}['"]

# Private keys (PEM format)
-----BEGIN (RSA |EC |DSA |OPENSSH )?PRIVATE KEY-----

# GitHub personal access tokens
ghp_[A-Za-z0-9]{36}

# Stripe secret keys
sk_(live|test)_[A-Za-z0-9]{24,}

# Generic bearer tokens
(?i)bearer\s+[A-Za-z0-9\-._~+/]{20,}

False positive reduction: skip matches inside *.test.*, *.spec.*, *.example, and *.md files when the value is clearly a placeholder (e.g., YOUR_KEY_HERE, <your-token>).

Dependency Audit Commands

Run the appropriate command for the detected stack and include output in the findings report:

Stack	Command
Node.js	`npm audit --json`
Python	`pip-audit --format json`
Go	`govulncheck ./...`
Ruby	`bundle audit check --update`
Java/Maven	`mvn dependency-check:check`
Rust	`cargo audit`

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