# Improper Access Control (CWE-284)

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

**Stack:** Kubernetes

- Prevalence: Alta Frequentemente explorada
- Impact: Alto 3 regras de severidade alta
- Prevention: Documentada 4 exemplos de correção

**OWASP:** Broken Access Control (A01:2021-Broken Access Control) - #1

## Description

Access control involves determining which subjects can access which objects. When access control is implemented incorrectly, it can lead to unauthorized access to sensitive data or functionality.

## Prevention

Estratégias de prevenção para Improper Access Control baseadas em 1 regras de detecção do Shoulder.

### Kubernetes

Define NetworkPolicy resources to restrict pod-to-pod traffic and enforce network segmentation

## Warning Signs

- [MEDIUM] Workload has no NetworkPolicy for network segmentation
- [MEDIUM] Kubernetes deployments without associated NetworkPolicy resources

## Consequences

- Ler dados da aplicação
- Modificar dados da aplicação
- Executar código não autorizado
- Obter privilégios

## Mitigations

- Implemente verificações adequadas de controle de acesso em todos os recursos
- Use o princípio do menor privilégio
- Aplique controles de acesso no servidor, e não apenas na UI

## Detection

- Total rules: 4
- Languages: go, javascript, typescript, kubernetes, yaml, python

## Rules by Language

### Kubernetes (1 rules)

- **Missing Network Policy** [MEDIUM]: Detects Kubernetes deployments without associated NetworkPolicy resources.
  - Remediation: Define a NetworkPolicy to control pod network access.

```yaml
kind: NetworkPolicy
spec:
  podSelector: {}
  policyTypes: [Ingress]
```

Learn more: https://shoulder.dev/learn/kubernetes/cwe-284/missing-network-policy

### Yaml (1 rules)

- **Missing Network Policy** [MEDIUM]: Detects Kubernetes deployments without associated NetworkPolicy resources.
  - Remediation: Define a NetworkPolicy to control pod network access.

```yaml
kind: NetworkPolicy
spec:
  podSelector: {}
  policyTypes: [Ingress]
```

Learn more: https://shoulder.dev/learn/kubernetes/cwe-284/missing-network-policy