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CVE-2025-29912

Estado: AnalizadaAlta (8.9)—

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 versions 1.3.3 and prior, an unsigned integer underflow in the `Crypto_TC_ProcessSecurity` function of CryptoLib leads to a heap buffer overflow. The vulnerability is triggered when the `fl` (frame length) field in a Telecommand (TC) packet is set to 0. This underflow causes the frame length to be interpreted as 65535, resulting in out-of-bounds memory access.

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This critical vulnerability can be exploited to cause a denial of service (DoS) or potentially achieve remote code execution. Users of CryptoLib are advised to apply the recommended patch or avoid processing untrusted TC packets until a fix is available.

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.

Vector CVSS red sin autenticación (AV:N/PR:N/UI:N). El desbordamiento de búfer por underflow en TC packets permite DoS o RCE; se explota como aplicación expuesta.

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 ManagementFilter Network TrafficVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software Installation

Tecnologías afectadas (1)

Nasa — Cryptolib

CWE

Referencias

JSON original (NVD)

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      "description": [
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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 versions 1.3.3 and prior, an unsigned integer underflow in the `Crypto_TC_ProcessSecurity` function of CryptoLib leads to a heap buffer overflow. The vulnerability is triggered when the `fl` (frame length) field in a Telecommand (TC) packet is set to 0. This underflow causes the frame length to be interpreted as 65535, resulting in out-of-bounds memory access. This critical vulnerability can be exploited to cause a denial of service (DoS) or potentially achieve remote code execution. Users of CryptoLib are advised to apply the recommended patch or avoid processing untrusted TC packets until a fix is available."
    },
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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 las versiones 1.3.3 y anteriores, un desbordamiento de entero sin signo en la función `Crypto_TC_ProcessSecurity` de CryptoLib provoca un desbordamiento del búfer del montón. La vulnerabilidad se activa cuando el campo `fl` (longitud de trama) de un paquete de Telecomando (TC) se establece en 0. Este desbordamiento hace que la longitud de trama se interprete como 65535, lo que resulta en un acceso a memoria fuera de los límites. Esta vulnerabilidad crítica puede explotarse para provocar una denegación de servicio (DoS) o, potencialmente, la ejecución remota de código. Se recomienda a los usuarios de CryptoLib que apliquen el parche recomendado o eviten procesar paquetes TC no confiables hasta que esté disponible una solución."
    }
  ],
  "lastModified": "2026-06-17T09:05:52.317",
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