# Active Debug Code (CWE-489)

The product is deployed to unauthorized actors with debugging code still enabled or active, which can create unintended entry points or information leaks.

**Stack:** Python

- Prevalence: Alta Frecuentemente explotada
- Impact: Crítico 1 reglas de severidad crítica
- Prevention: Documentada 6 ejemplos de corrección

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

## Description

Debug code is often written to allow easier testing and debugging. This code is not intended to be shipped to production but is sometimes inadvertently left in the product. Debug code often exposes information about the product's internal structure or creates additional attack surface.

## Prevention

Estrategias de prevención para Active Debug Code basadas en 2 reglas de detección de Shoulder.

### Python

Load DEBUG from environment variables, defaulting to False in production

Load Flask debug mode from environment variables, defaulting to False

## Warning Signs

- [HIGH] Flask applications running with debug mode enabled
- [CRITICAL] Django applications with DEBUG = True in settings

## Consequences

- Leer datos de la aplicación
- Eludir mecanismo de protección
- Ejecutar código no autorizado

## Mitigations

- Elimina el código de depuración antes de desplegar el producto en producción
- Usa configuraciones de build que excluyan automáticamente el código de depuración de las compilaciones de producción
- Audita el código en busca de endpoints de depuración y puertas traseras antes del lanzamiento

## Detection

- Total rules: 6
- Critical: 1
- Languages: python, go, javascript, typescript

## Rules by Language

### Python (2 rules)

- **Django Debug Mode in Production** [CRITICAL]: Detects Django applications with DEBUG = True in settings. Debug mode exposes
sensitive information including settings, environment variables, SQL queries,
and stack traces. This must NEVER be enabled in production.
  - Remediation: Load DEBUG from environment variables, defaulting to False.

```python
import os

DEBUG = os.getenv('DJANGO_DEBUG', 'False').lower() == 'true'
ALLOWED_HOSTS = ['example.com', 'www.example.com']
```

Learn more: https://shoulder.dev/learn/python/cwe-489/debug-mode
- **Flask Debug Mode in Production** [HIGH]: Detects Flask applications running with debug mode enabled. Debug mode exposes
sensitive information, allows code execution through the interactive debugger,
and should NEVER be enabled in production.
  - Remediation: Load debug mode from environment variables, defaulting to False.

```python
import os
from flask import Flask

app = Flask(__name__)

if __name__ == '__main__':
    debug = os.getenv('FLASK_DEBUG', 'False').lower() == 'true'
    app.run(debug=debug)
```

Learn more: https://shoulder.dev/learn/python/cwe-489/debug-mode