Ejecuta análisis estático (SAST) sobre el código buscando el patrón inseguro en el flujo de datos.
CWE-1264 Base Incompleto
Hardware Logic with Insecure De-Synchronization between Control and Data Channels
This vulnerability occurs when a hardware design incorrectly forwards data before its security or permission checks have finished processing. It's a timing flaw where the data channel gets ahead of…
Definición
What is CWE-1264?
This vulnerability occurs when a hardware design incorrectly forwards data before its security or permission checks have finished processing. It's a timing flaw where the data channel gets ahead of the control channel, potentially leaking information.
Modern hardware often uses separate control and data channels to boost performance. A bug in the logic that manages errors and security can allow data to 'race ahead' and be used or observed before the system confirms it's safe to do so. This desynchronization creates a critical window where unauthorized data access can happen.
The real-world impact is a loss of data confidentiality, as seen in exploits like Meltdown. In that case, a CPU speculatively loaded privileged data for performance, assuming it could clean up all traces if the access was later deemed illegal. However, secret data remained in the microarchitectural state, proving that assumption false and allowing attackers to retrieve it.
Impacto en el mundo real
Real-world CVEs caused by CWE-1264
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Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache.
Cómo lo explotan los atacantes
Ruta del atacante paso a paso
- 1
Identifica una ruta de código que maneje entrada no confiable sin validación.
- 2
Crea un payload que ejercite el comportamiento inseguro — inyección, traversal, overflow o abuso de lógica.
- 3
Envía el payload a través de una solicitud normal y observa la reacción de la aplicación.
- 4
Itera hasta que la respuesta filtre datos, ejecute código del atacante o escale privilegios.
Ejemplo de código vulnerable
Vulnerable Other
There are several standard on-chip bus protocols used in modern SoCs to allow communication between components. There are a wide variety of commercially available hardware IP implementing the interconnect logic for these protocols. A bus connects components which initiate/request communications such as processors and DMA controllers (bus masters) with peripherals which respond to requests. In a typical system, the privilege level or security designation of the bus master along with the intended functionality of each peripheral determine the security policy specifying which specific bus masters can access specific peripherals. This security policy (commonly referred to as a bus firewall) can be enforced using separate IP/logic from the actual interconnect responsible for the data routing.
The firewall and data routing logic becomes de-synchronized due to a hardware logic bug allowing components that should not be allowed to communicate to share data. For example, consider an SoC with two processors. One is being used as a root of trust and can access a cryptographic key storage peripheral. The other processor (application cpu) may run potentially untrusted code and should not access the key store. If the application cpu can issue a read request to the key store which is not blocked due to de-synchronization of data routing and the bus firewall, disclosure of cryptographic keys is possible. Ejemplo de código seguro
Secure Other
All data is correctly buffered inside the interconnect until the firewall has determined that the endpoint is allowed to receive the data. 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-1264
- Architecture and Design Thoroughly verify the data routing logic to ensure that any error handling or security checks effectively block illegal dataflows.
Señales de detección
How to detect CWE-1264
Ejecuta pruebas dinámicas de seguridad de aplicaciones (DAST) contra el endpoint en vivo.
Vigila los logs en tiempo de ejecución para detectar trazas de excepción inusuales, entradas malformadas o intentos de bypass de autorización.
Revisión de código: marca cualquier código nuevo que maneje entrada desde esta superficie sin usar los helpers validados del framework.
Plexicus detecta automáticamente CWE-1264 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.
Preguntas frecuentes ¿Qué es CWE-1264?
¿Qué gravedad tiene CWE-1264?
¿Qué lenguajes o plataformas se ven afectados por CWE-1264?
¿Cómo puedo prevenir CWE-1264?
¿Cómo detecta y corrige Plexicus CWE-1264?
¿Dónde puedo aprender más sobre CWE-1264?
Frequently asked questions
¿Qué es CWE-1264?
This vulnerability occurs when a hardware design incorrectly forwards data before its security or permission checks have finished processing. It's a timing flaw where the data channel gets ahead of the control channel, potentially leaking information.
¿Qué gravedad tiene CWE-1264?
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-1264?
MITRE lists the following affected platforms: Not OS-Specific, Not Architecture-Specific, Not Technology-Specific.
¿Cómo puedo prevenir CWE-1264?
Thoroughly verify the data routing logic to ensure that any error handling or security checks effectively block illegal dataflows.
¿Cómo detecta y corrige Plexicus CWE-1264?
El motor SAST de Plexicus detecta la firma de flujo de datos para CWE-1264 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-1264?
MITRE publica la definición canónica en https://cwe.mitre.org/data/definitions/1264.html. También puedes consultar la documentación de OWASP y NIST para guías relacionadas.
Debilidades relacionadas
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