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CVE-2025-30356

Estado: AnalizadaCrítica (9.3)—

CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft running the core Flight System (cFS) and a ground station. In 1.3.3 and earlier, a heap buffer overflow vulnerability persists in the Crypto_TC_ApplySecurity function due to an incomplete validation check on the fl (frame length) field. Although CVE-2025-29912 addressed an underflow issue involving fl, the patch fails to fully prevent unsafe calculations. As a result, an attacker can still craft malicious frames that cause a negative tf_payload_len, which is then interpreted as a large unsigned value, leading to a heap buffer overflow in a memcpy call.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

CryptoLib expuesta en red (AV:N, PR:N, UI:N) con desbordamiento de búfer de montón que permite ejecución arbitraria de código. Escalada de privilegios probable en contexto espacial (cFS/satélite).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareVulnerability Scanning

Tecnologías afectadas (1)

Nasa — Cryptolib

CWE

Referencias

JSON original (NVD)

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      "value": "CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft running the core Flight System (cFS) and a ground station. In 1.3.3 and earlier, a heap buffer overflow vulnerability persists in the Crypto_TC_ApplySecurity function due to an incomplete validation check on the fl (frame length) field. Although CVE-2025-29912 addressed an underflow issue involving fl, the patch fails to fully prevent unsafe calculations. As a result, an attacker can still craft malicious frames that cause a negative tf_payload_len, which is then interpreted as a large unsigned value, leading to a heap buffer overflow in a memcpy call."
    },
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      "lang": "es",
      "value": "CryptoLib ofrece una solución exclusivamente de software que utiliza el Protocolo de Seguridad de Enlace de Datos Espaciales CCSDS - Procedimientos Extendidos (SDLS-EP) para proteger las comunicaciones entre una nave espacial que ejecuta el Sistema de Vuelo (cFS) y una estación terrestre. En la versión 1.3.3 y anteriores, persiste una vulnerabilidad de desbordamiento del búfer de pila en la función Crypto_TC_ApplySecurity debido a una comprobación de validación incompleta en el campo fl (longitud de la trama). Aunque CVE-2025-29912 solucionó un problema de desbordamiento por debajo de la capacidad de fl, el parche no previene completamente los cálculos inseguros. Como resultado, un atacante aún puede manipular tramas maliciosas que provoquen un valor negativo en tf_payload_len, que se interpreta como un valor grande sin signo, lo que provoca un desbordamiento del búfer de pila en una llamada a memcpy."
    }
  ],
  "lastModified": "2026-06-17T09:08:34.470",
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