# Allocation of Resources Without Limits or Throttling (CWE-770)

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated.

**Stack:** Python

- Prevalence: High Frequently exploited
- Impact: Medium Review recommended
- Prevention: Documented 3 fix examples

**OWASP:** Security Misconfiguration (A05:2021-Security Misconfiguration) - #5

## Description

Without limits on resource allocation, an attacker can consume all available resources, causing denial of service for legitimate users.

## Prevention

Prevention strategies for Allocation Without Limits based on 1 Shoulder detection rules.

### Python

Add rate limiting to authentication and expensive API endpoints

## Warning Signs

- [MEDIUM] API endpoint lacks rate limiting protection
- [MEDIUM] API endpoints without rate limiting

## Consequences

- DoS: Resource Consumption
- DoS: Crash/Exit/Restart

## Mitigations

- Implement rate limiting for all resource allocations
- Set maximum limits for resource pools
- Monitor resource usage and implement alerts

## Detection

- Total rules: 3
- Languages: javascript, typescript, python

## Rules by Language

### Python (1 rules)

- **Missing API Rate Limiting** [MEDIUM]: Detects API endpoints without rate limiting. Unprotected endpoints are
vulnerable to brute force attacks, credential stuffing, and denial of service.
Always implement rate limiting on authentication, expensive operations, and
public APIs.
  - Remediation: Add rate limiting decorator to authentication and expensive endpoints.

```python
from flask_limiter import Limiter
from flask_limiter.util import get_remote_address

limiter = Limiter(app=app, key_func=get_remote_address)

@app.route('/api/login', methods=['POST'])
@limiter.limit("5 per minute")
def login():
    user = authenticate(request.json)
    return jsonify({'token': generate_token(user)})
```

Learn more: https://shoulder.dev/learn/python/cwe-770/missing-rate-limiting