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Client security fixes (cmd/tailscale-tray/main.go): - SSRF protection in Add Server dialog (validateControlURL): reject private/loopback/link-local/cloud-metadata IPs via DNS resolution - RCE gate on AuthURL/BrowseToURL exec paths (validateAuthURL) - Sanitized URL logging (sanitizeURLForLog drops query auth tokens) - Error handling on exec.Command with user-facing showError() Admin panel security (web-admin): - Bcrypt password hashing (replaces SHA256) - Rate limiting: 5 failed logins → 15-min lockout - Session + login attempt cleanup goroutine (hourly) - url.QueryEscape / encodeURIComponent for all API params - Fail-hard startup when no TLS and non-loopback bind - ADMIN_PASSWORD required (no default), password min 12 chars - Username regex whitelist Installer hardening (Setup.wxs): - util:PermissionEx restricts SCM access: only Administrators + SYSTEM can start/stop/reconfigure service. Authenticated Users limited to QueryStatus/QueryConfig/Interrogate - Vital="yes" on ServiceInstall Docs & roadmap: - PRODUCTION_ROADMAP.md: 5-milestone plan (security + features + distribution + ops) with granular tasks, effort, done-when - CLIENT_SECURITY_AUDIT.md, SECURITY_FIXES.md, DEPLOYMENT.md - AI assistant rules (.cursorrules, .antigravityrules, etc.) Build & distribution: - build-msi.ps1, deploy-and-sign.ps1, sign-release.ps1 - redeploy.ps1, tray-deploy.ps1, test-msi.ps1 - installer/msi/ alternative WXS setup - Restored .github/workflows/ removed in mirror cleanup .gitignore hardened: *.pfx, *.p12, *.key, *.pem, .env*
2.8 KiB
2.8 KiB
API Security Testing
Principles for testing API security. OWASP API Top 10, authentication, authorization testing.
OWASP API Security Top 10
| Vulnerability | Test Focus |
|---|---|
| API1: BOLA | Access other users' resources |
| API2: Broken Auth | JWT, session, credentials |
| API3: Property Auth | Mass assignment, data exposure |
| API4: Resource Consumption | Rate limiting, DoS |
| API5: Function Auth | Admin endpoints, role bypass |
| API6: Business Flow | Logic abuse, automation |
| API7: SSRF | Internal network access |
| API8: Misconfiguration | Debug endpoints, CORS |
| API9: Inventory | Shadow APIs, old versions |
| API10: Unsafe Consumption | Third-party API trust |
Authentication Testing
JWT Testing
| Check | What to Test |
|---|---|
| Algorithm | None, algorithm confusion |
| Secret | Weak secrets, brute force |
| Claims | Expiration, issuer, audience |
| Signature | Manipulation, key injection |
Session Testing
| Check | What to Test |
|---|---|
| Generation | Predictability |
| Storage | Client-side security |
| Expiration | Timeout enforcement |
| Invalidation | Logout effectiveness |
Authorization Testing
| Test Type | Approach |
|---|---|
| Horizontal | Access peer users' data |
| Vertical | Access higher privilege functions |
| Context | Access outside allowed scope |
BOLA/IDOR Testing
- Identify resource IDs in requests
- Capture request with user A's session
- Replay with user B's session
- Check for unauthorized access
Input Validation Testing
| Injection Type | Test Focus |
|---|---|
| SQL | Query manipulation |
| NoSQL | Document queries |
| Command | System commands |
| LDAP | Directory queries |
Approach: Test all parameters, try type coercion, test boundaries, check error messages.
Rate Limiting Testing
| Aspect | Check |
|---|---|
| Existence | Is there any limit? |
| Bypass | Headers, IP rotation |
| Scope | Per-user, per-IP, global |
Bypass techniques: X-Forwarded-For, different HTTP methods, case variations, API versioning.
GraphQL Security
| Test | Focus |
|---|---|
| Introspection | Schema disclosure |
| Batching | Query DoS |
| Nesting | Depth-based DoS |
| Authorization | Field-level access |
Security Testing Checklist
Authentication:
- Test for bypass
- Check credential strength
- Verify token security
Authorization:
- Test BOLA/IDOR
- Check privilege escalation
- Verify function access
Input:
- Test all parameters
- Check for injection
Config:
- Check CORS
- Verify headers
- Test error handling
Remember: APIs are the backbone of modern apps. Test them like attackers will.