CWE-653 Clase Borrador

Improper Isolation or Compartmentalization

This vulnerability occurs when an application fails to enforce strong boundaries between components that operate at different security levels, allowing lower-privileged functions to improperly…

Definición

What is CWE-653?

This vulnerability occurs when an application fails to enforce strong boundaries between components that operate at different security levels, allowing lower-privileged functions to improperly interact with higher-privileged ones.
At its core, this weakness breaks a fundamental security principle: components with different trust levels should be kept separate. When an application doesn't properly isolate features, data, or processes, a flaw in a low-privilege area can create a bridge that attackers use to reach sensitive, high-privilege areas. Think of it like a building where a broken lock on a janitor's closet somehow gives access to the entire executive suite. For developers, this means that even a minor bug in a user-facing feature can escalate into a major breach if strong compartmentalization isn't in place. To prevent this, you must design clear security boundaries—using mechanisms like process separation, sandboxing, or strict access controls—to ensure that a compromise in one module is contained and cannot spread to more critical parts of the system.
Impacto en el mundo real

Real-world CVEs caused by CWE-653

  • CVE-2021-33096

    Improper isolation of shared resource in a network-on-chip leads to denial of service

  • CVE-2019-6260

    Baseboard Management Controller (BMC) device implements Advanced High-performance Bus (AHB) bridges that do not require authentication for arbitrary read and write access to the BMC's physical address space from the host, and possibly the network [REF-1138].

Cómo lo explotan los atacantes

Ruta del atacante paso a paso

  1. 1

    Identifica una ruta de código que maneje entrada no confiable sin validación.

  2. 2

    Crea un payload que ejercite el comportamiento inseguro — inyección, traversal, overflow o abuso de lógica.

  3. 3

    Envía el payload a través de una solicitud normal y observa la reacción de la aplicación.

  4. 4

    Itera hasta que la respuesta filtre datos, ejecute código del atacante o escale privilegios.

Ejemplo de código vulnerable

Vulnerable pseudo

MITRE no ha publicado un ejemplo de código para esta CWE. El patrón siguiente es ilustrativo — consulta Recursos para referencias canónicas.

Vulnerable pseudo 
// Example pattern — see MITRE for the canonical references.
function handleRequest(input) {
  // Untrusted input flows directly into the sensitive sink.
  return executeUnsafe(input);
}
Ejemplo de código seguro

Secure pseudo

Seguro pseudo 
// Validate, sanitize, or use a safe API before reaching the sink.
function handleRequest(input) {
  const safe = validateAndEscape(input);
  return executeWithGuards(safe);
}
What changed: the unsafe sink is replaced (or the input is validated/escaped) so the same payload no longer triggers the weakness.
Lista de prevención

How to prevent CWE-653

  • Architecture and Design Break up privileges between different modules, objects, or entities. Minimize the interfaces between modules and require strong access control between them.
Señales de detección

How to detect CWE-653

Automated Static Analysis - Binary or Bytecode SOAR Partial

According to SOAR, the following detection techniques may be useful: ``` Cost effective for partial coverage: ``` Compare binary / bytecode to application permission manifest

Manual Static Analysis - Source Code High

According to SOAR, the following detection techniques may be useful: ``` Highly cost effective: ``` Manual Source Code Review (not inspections) ``` Cost effective for partial coverage: ``` Focused Manual Spotcheck - Focused manual analysis of source

Architecture or Design Review High

According to SOAR, the following detection techniques may be useful: ``` Highly cost effective: ``` Inspection (IEEE 1028 standard) (can apply to requirements, design, source code, etc.) Formal Methods / Correct-By-Construction ``` Cost effective for partial coverage: ``` Attack Modeling

Auto-corrección de Plexicus

Plexicus detecta automáticamente CWE-653 y abre un PR de corrección en menos de 60 segundos.

Codex Remedium escanea cada commit, identifica esta debilidad concreta y entrega un pull request listo para revisión con el parche. Sin tickets. Sin traspasos.

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Preguntas frecuentes

Frequently asked questions

¿Qué es CWE-653?

This vulnerability occurs when an application fails to enforce strong boundaries between components that operate at different security levels, allowing lower-privileged functions to improperly interact with higher-privileged ones.

¿Qué gravedad tiene CWE-653?

MITRE no ha publicado una calificación de probabilidad de explotación para esta debilidad. Trátala como de impacto medio hasta que tu modelo de amenazas demuestre lo contrario.

¿Qué lenguajes o plataformas se ven afectados por CWE-653?

MITRE no ha especificado plataformas afectadas para esta CWE — puede aplicar a la mayoría de los stacks de aplicaciones.

¿Cómo puedo prevenir CWE-653?

Break up privileges between different modules, objects, or entities. Minimize the interfaces between modules and require strong access control between them.

¿Cómo detecta y corrige Plexicus CWE-653?

El motor SAST de Plexicus detecta la firma de flujo de datos para CWE-653 en cada commit. Cuando hay coincidencia, nuestro agente Codex Remedium abre un PR de corrección con el código corregido, las pruebas y un resumen de una línea para el revisor.

¿Dónde puedo aprender más sobre CWE-653?

MITRE publica la definición canónica en https://cwe.mitre.org/data/definitions/653.html. También puedes consultar la documentación de OWASP y NIST para guías relacionadas.

Debilidades relacionadas

Weaknesses related to CWE-653

CWE-657 Padre

Violation of Secure Design Principles

This weakness occurs when a system's architecture or design fails to follow fundamental security principles, creating a flawed foundation…

CWE-1192 Hermano

Improper Identifier for IP Block used in System-On-Chip (SOC)

This weakness occurs when a System-on-Chip (SoC) lacks a secure, unique, and permanent identifier for its internal hardware components (IP…

CWE-1395 Hermano

Dependency on Vulnerable Third-Party Component

This vulnerability occurs when your software relies on an external library, framework, or module that contains known security flaws.

CWE-250 Hermano

Execution with Unnecessary Privileges

This vulnerability occurs when software runs with higher permissions than it actually needs to perform its tasks. This excessive privilege…

CWE-636 Hermano

Not Failing Securely ('Failing Open')

This vulnerability occurs when a system, upon encountering an error or failure, defaults to its least secure configuration instead of a…

CWE-637 Hermano

Unnecessary Complexity in Protection Mechanism (Not Using 'Economy of Mechanism')

This weakness occurs when a security feature is implemented with excessive complexity, creating unnecessary risk. Overly intricate…

CWE-638 Hermano

Not Using Complete Mediation

This vulnerability occurs when software fails to verify access permissions every single time a user or process tries to use a resource.…

CWE-654 Hermano

Reliance on a Single Factor in a Security Decision

This vulnerability occurs when a system's security check depends almost entirely on just one condition, object, or piece of data to decide…

CWE-655 Hermano

Insufficient Psychological Acceptability

This weakness occurs when security features are so cumbersome or confusing that well-intentioned users feel forced to turn them off or…

Recursos

Further reading

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