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- Add scripts/agent.py and references/api-reference.md to all remaining skills - Update all 648 LICENSE files: copyright now reads 'Mahipal' - Add implementing-security-monitoring-with-datadog (new skill with full anatomy) - All 649 skills now have: SKILL.md, LICENSE, scripts/agent.py, references/api-reference.md
2.2 KiB
2.2 KiB
API Rate Limiting Bypass — API Reference
Libraries
| Library | Install | Purpose |
|---|---|---|
| requests | pip install requests |
HTTP request sending with custom headers |
Rate Limit Response Headers
| Header | Description |
|---|---|
X-RateLimit-Limit |
Maximum requests per window |
X-RateLimit-Remaining |
Requests remaining in window |
X-RateLimit-Reset |
Timestamp when limit resets |
Retry-After |
Seconds to wait before retrying |
RateLimit-Policy |
IETF draft rate limit policy |
IP Spoofing Bypass Headers
| Header | Description |
|---|---|
X-Forwarded-For |
Standard proxy forwarding header |
X-Real-IP |
NGINX real client IP |
X-Originating-IP |
Client originating IP |
X-Client-IP |
Client IP identifier |
True-Client-IP |
Akamai/CDN client IP |
CF-Connecting-IP |
Cloudflare client IP |
Forwarded |
RFC 7239 forwarded header |
Bypass Techniques
| Technique | Description | Severity |
|---|---|---|
| Header IP rotation | Rotate X-Forwarded-For per request | HIGH |
| HTTP method switching | GET rate-limited but POST is not | MEDIUM |
| Path variation | /api/users vs /api/users/ |
MEDIUM |
| Case variation | /API/Users vs /api/users |
MEDIUM |
| URL encoding | %2Fapi%2Fusers instead of /api/users |
MEDIUM |
| Null byte injection | Append %00 to URL path |
HIGH |
| API version switching | /v1/users vs /v2/users |
MEDIUM |
| Parameter pollution | Duplicate query parameters | MEDIUM |
OWASP API4:2023 — Unrestricted Resource Consumption
| Risk | Description |
|---|---|
| Missing rate limits | No throttling on sensitive endpoints |
| Per-IP only limits | Bypassed with header spoofing |
| No auth-based limiting | Rate limit tied to IP, not user |
| Inconsistent enforcement | Different limits per method/version |