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CVE-2025-62603

Estado: AnalizadaBaja (1.7)—

Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group ). ParticipantGenericMessage is the DDS Security control-message container that carries not only the handshake but also on going security-control traffic after the handshake, such as crypto-token exchange, rekeying, re-authentication, and token delivery for newly appearing endpoints. On receive, the CDR parser is invoked first and deserializes the `message_data` (i .e., the `DataHolderSeq`) via the `readParticipantGenericMessage → readDataHolderSeq` path.

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The `DataHolderSeq` is parsed sequentially: a sequence count (`uint32`), and for each DataHolder the `class_id` string (e.g. `DDS:Auth:PKI-DH:1.0+Req`), string properties (a sequence of key/value pairs), and binary properties (a name plus an octet-vector). The parser operat es at a stateless level and does not know higher-layer state (for example, whether the handshake has already completed), s o it fully unfolds the structure before distinguishing legitimate from malformed traffic. Because RTPS permits duplicates, delays, and retransmissions, a receiver must perform at least minimal structural parsing to check identity and sequence n umbers before discarding or processing a message; the current implementation, however, does not "peek" only at a minimal header and instead parses the entire `DataHolderSeq`. As a result, prior to versions 3.4.1, 3.3.1, and 2.6.11, this parsi ng behavior can trigger an out-of-memory condition and remotely terminate the process. Versions 3.4.1, 3.3.1, and 2.6.11 p atch the issue.

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).

Tecnologías afectadas (2)

Debian — Debian LinuxEprosima — Fast DDS

CWE

Referencias

JSON original (NVD)

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      "lang": "en",
      "value": "Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group\n). ParticipantGenericMessage is the DDS Security control-message container that carries not only the handshake but also on\ngoing security-control traffic after the handshake, such as crypto-token exchange, rekeying, re-authentication, and token \ndelivery for newly appearing endpoints. On receive, the CDR parser is invoked first and deserializes the `message_data` (i\n.e., the `DataHolderSeq`) via the `readParticipantGenericMessage → readDataHolderSeq` path. The `DataHolderSeq` is parsed \nsequentially: a sequence count (`uint32`), and for each DataHolder the `class_id` string (e.g. `DDS:Auth:PKI-DH:1.0+Req`),\n string properties (a sequence of key/value pairs), and binary properties (a name plus an octet-vector). The parser operat\nes at a stateless level and does not know higher-layer state (for example, whether the handshake has already completed), s\no it fully unfolds the structure before distinguishing legitimate from malformed traffic. Because RTPS permits duplicates,\n delays, and retransmissions, a receiver must perform at least minimal structural parsing to check identity and sequence n\numbers before discarding or processing a message; the current implementation, however, does not \"peek\" only at a minimal\n header and instead parses the entire `DataHolderSeq`. As a result, prior to versions 3.4.1, 3.3.1, and 2.6.11, this parsi\nng behavior can trigger an out-of-memory condition and remotely terminate the process. Versions 3.4.1, 3.3.1, and 2.6.11 p\natch the issue."
    },
    {
      "lang": "es",
      "value": "Fast DDS es una implementación en C++ del estándar DDS (Data Distribution Service) de la OMG (Object Management Group). ParticipantGenericMessage es el contenedor de mensajes de control de DDS Security que transporta no solo el handshake sino también el tráfico de control de seguridad continuo después del handshake, como el intercambio de cripto-tokens, el rekeying, la re-autenticación y la entrega de tokens para los endpoints que aparecen recientemente. Al recibir, el analizador CDR se invoca primero y deserializa el 'message_data' (es decir, el 'DataHolderSeq') a través de la ruta 'readParticipantGenericMessage ? readDataHolderSeq'. El 'DataHolderSeq' se analiza secuencialmente: un recuento de secuencia ('uint32'), y para cada DataHolder la cadena 'class_id' (por ejemplo, 'DDS:Auth:PKI-DH:1.0+Req'), propiedades de cadena (una secuencia de pares clave/valor), y propiedades binarias (un nombre más un vector de octetos). El analizador opera a un nivel sin estado y no conoce el estado de capas superiores (por ejemplo, si el handshake ya se ha completado), por lo que despliega completamente la estructura antes de distinguir el tráfico legítimo del malformado. Debido a que RTPS permite duplicados, retrasos y retransmisiones, un receptor debe realizar al menos un análisis estructural mínimo para verificar la identidad y los números de secuencia antes de descartar o procesar un mensaje; la implementación actual, sin embargo, no 'echa un vistazo' solo a una cabecera mínima y en su lugar analiza todo el 'DataHolderSeq'. Como resultado, antes de las versiones 3.4.1, 3.3.1 y 2.6.11, este comportamiento de análisis puede desencadenar una condición de falta de memoria y terminar el proceso de forma remota. Las versiones 3.4.1, 3.3.1 y 2.6.11 parchean el problema."
    }
  ],
  "lastModified": "2026-06-17T09:52:08.870",
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