CWE-1292 Base Borrador

Incorrect Conversion of Security Identifiers

This vulnerability occurs when a hardware system incorrectly translates security identifiers during bus protocol conversion. An improper mapping allows untrusted agents to bypass security checks and…

Definición

What is CWE-1292?

This vulnerability occurs when a hardware system incorrectly translates security identifiers during bus protocol conversion. An improper mapping allows untrusted agents to bypass security checks and gain unauthorized access to protected assets or functions.
In a System-on-Chip (SoC), different hardware components communicate via transactions that include security identifiers. These identifiers act like permissions, telling the receiving component what actions the sender is allowed to perform, such as reading or writing to a memory region. When a leader agent (e.g., using AHB protocol) needs to talk to a follower agent (e.g., using OCP protocol), a bridge performs a protocol conversion. If this bridge incorrectly maps or drops the security identifiers during translation, the transaction's permissions can be elevated or misrepresented. This flawed conversion creates a critical security gap. An untrusted or lower-privileged agent can send a transaction that, after incorrect translation, appears to have higher privileges than intended. The destination agent then grants unauthorized access based on this faulty security context, potentially leading to data exposure, corruption, or unauthorized control of hardware functions. The core issue is a mismatch between the intended security policy and its implementation in the protocol bridge.
Impacto en el mundo real

Real-world CVEs caused by CWE-1292

Todavía no hay CVEs públicos enlazados a esta CWE en el catálogo de MITRE.

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 Other

Consider a system that supports AHB. Let us assume we have a follower agent that only understands OCP. To connect this follower to the leader, a bridge is introduced, i.e., AHB to OCP. The follower has assets to protect accesses from untrusted leaders, and it employs access controls based on policy, (e.g., AES-Key registers for encryption or decryption). The key is 128 bits implemented as a set of four 32-bit registers. The key registers are assets, and register AES_KEY_ACCESS_POLICY is defined to provide the necessary access controls. The AES_KEY_ACCESS_POLICY access-policy register defines which agents with a security identifier in the transaction can access the AES-key registers. The implemented AES_KEY_ACCESS_POLICY has 4 bits where each bit when "Set" allows access to the AES-Key registers to the corresponding agent that has the security identifier. The other bits from 31 through 4 are reserved and not used. | | | | Register | Field Description | | AES_ENC_DEC_KEY_0 | AES key [0:31] for encryption or decryption Default 0x00000000 | | AES_ENC_DEC_KEY_1 | AES key [32:63] for encryption or decryption Default 0x00000000 | | AES_ENC_DEC_KEY_2 | AES key [64:95] for encryption or decryption Default 0x00000000 | | AES_ENC_DEC_KEY_3 | AES key [96:127] for encryption or decryption Default 0x00000000 | | AES_KEY_ACCESS_POLICY | [31:4] Default 0x000000 [3:0] - 0x02 agent with Security Identifier "1" has access to AES_ENC_DEC_KEY_0 through AES_ENC_DEC_KEY_4 registers | During conversion of the AHB-to-OCP transaction, the security identifier information must be preserved and passed on to the follower correctly.

Vulnerable Other 
In AHB-to-OCP bridge, the security identifier information conversion is done incorrectly.
Ejemplo de código seguro

Secure Other

Because of the incorrect conversion, the security identifier information is either lost or could be modified in such a way that an untrusted leader can access the AES-Key registers.

Seguro Other 
The conversion of the signals from one protocol (AHB) to another (OCP) must be done while preserving the security identifier correctly.
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-1292

  • Architecture and Design Security identifier decoders must be reviewed for design inconsistency and common weaknesses.
  • Implementation Access and programming flows must be tested in pre-silicon and post-silicon testing.
Señales de detección

How to detect CWE-1292

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-1292 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-1292?

This vulnerability occurs when a hardware system incorrectly translates security identifiers during bus protocol conversion. An improper mapping allows untrusted agents to bypass security checks and gain unauthorized access to protected assets or functions.

¿Qué gravedad tiene CWE-1292?

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-1292?

MITRE lists the following affected platforms: Not OS-Specific, Not Architecture-Specific, Bus/Interface Hardware, Not Technology-Specific.

¿Cómo puedo prevenir CWE-1292?

Security identifier decoders must be reviewed for design inconsistency and common weaknesses. Access and programming flows must be tested in pre-silicon and post-silicon testing.

¿Cómo detecta y corrige Plexicus CWE-1292?

El motor SAST de Plexicus detecta la firma de flujo de datos para CWE-1292 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-1292?

MITRE publica la definición canónica en https://cwe.mitre.org/data/definitions/1292.html. También puedes consultar la documentación de OWASP y NIST para guías relacionadas.

Debilidades relacionadas

Weaknesses related to CWE-1292

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Recursos

Further reading

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