CWE-671 Clase Borrador

Lack of Administrator Control over Security

This weakness occurs when a system's built-in security settings cannot be adjusted by its administrator. This prevents tailoring security to the specific deployment environment, forcing the system…

Definición

What is CWE-671?

This weakness occurs when a system's built-in security settings cannot be adjusted by its administrator. This prevents tailoring security to the specific deployment environment, forcing the system to operate at a lower or inappropriate security level than required.
When administrators lack continuous control over security configurations, they cannot effectively defend the system against evolving threats. This includes threats from external attackers or even the original software vendor. For example, hard-coded credentials that cannot be changed create a permanent backdoor that the admin is powerless to close, making targeted security hardening impossible. This rigidity forces the organization to accept the developer's default risk posture, which often doesn't match real-world needs. It prevents implementing least-privilege principles, adapting to new compliance rules, or responding to incident investigations. Ultimately, the product becomes a liability instead of a protected asset, as security decisions are outsourced and frozen in time.
Impacto en el mundo real

Real-world CVEs caused by CWE-671

  • CVE-2022-29953

    Condition Monitor firmware has a maintenance interface with hard-coded credentials

  • CVE-2000-0127

    GUI configuration tool does not enable a security option when a checkbox is selected, although that option is honored when manually set in the configuration file.

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 C

The following code is an example of an internal hard-coded password in the back-end:

Vulnerable C 
int VerifyAdmin(char *password) {
  		if (strcmp(password, "Mew!")) {
  				 printf("Incorrect Password!\n");
  				return(0)
  		}
  		printf("Entering Diagnostic Mode...\n");
  		return(1);
  }
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-671

  • Architecture Use safe-by-default frameworks and APIs that prevent the unsafe pattern from being expressible.
  • Implementation Validate input at trust boundaries; use allowlists, not denylists.
  • Implementation Apply the principle of least privilege to credentials, file paths, and runtime permissions.
  • Testing Cover this weakness in CI: SAST rules + targeted unit tests for the data flow.
  • Operation Monitor logs for the runtime signals listed in the next section.
Señales de detección

How to detect CWE-671

SAST High

Ejecuta análisis estático (SAST) sobre el código buscando el patrón inseguro en el flujo de datos.

DAST Moderate

Ejecuta pruebas dinámicas de seguridad de aplicaciones (DAST) contra el endpoint en vivo.

Runtime Moderate

Vigila los logs en tiempo de ejecución para detectar trazas de excepción inusuales, entradas malformadas o intentos de bypass de autorización.

Code review Moderate

Revisión de código: marca cualquier código nuevo que maneje entrada desde esta superficie sin usar los helpers validados del framework.

Auto-corrección de Plexicus

Plexicus detecta automáticamente CWE-671 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-671?

This weakness occurs when a system's built-in security settings cannot be adjusted by its administrator. This prevents tailoring security to the specific deployment environment, forcing the system to operate at a lower or inappropriate security level than required.

¿Qué gravedad tiene CWE-671?

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-671?

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

¿Cómo puedo prevenir CWE-671?

Use safe-by-default frameworks, validate untrusted input at trust boundaries, and apply the principle of least privilege. Cover the data-flow signature in CI with SAST.

¿Cómo detecta y corrige Plexicus CWE-671?

El motor SAST de Plexicus detecta la firma de flujo de datos para CWE-671 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-671?

MITRE publica la definición canónica en https://cwe.mitre.org/data/definitions/671.html. También puedes consultar la documentación de OWASP y NIST para guías relacionadas.

Debilidades relacionadas

Weaknesses related to CWE-671

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

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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-653 Hermano

Improper Isolation or Compartmentalization

This vulnerability occurs when an application fails to enforce strong boundaries between components that operate at different security…

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…

Recursos

Further reading

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