{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-62603", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2025-10-16T19:24:37.267Z", "datePublished": "2026-02-03T19:23:38.191Z", "dateUpdated": "2026-02-03T20:44:12.618Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-02-03T19:23:38.191Z" }, "title": "FastDDS has Out-of-memory while parsing GenericMessage when DDS Security is enabled", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read", "type": "CWE" } ] } ], "affected": [ { "vendor": "eProsima", "product": "Fast-DDS", "repo": "https://github.com/eProsima/Fast-DDS", "versions": [ { "status": "affected", "version": "3.4.0", "lessThan": "3.4.1", "versionType": "custom" }, { "status": "affected", "version": "3.0.0", "lessThan": "3.3.1", "versionType": "custom" }, { "status": "affected", "version": "0", "lessThan": "2.6.11", "versionType": "custom" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "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.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Gr\noup). ParticipantGenericMessage is the DDS Security control-message container that carries not only the handshake but also\n ongoing security-control traffic after the handshake, such as crypto-token exchange, rekeying, re-authentication, and tok\nen delivery for newly appearing endpoints. On receive, the CDR parser is invoked first and deserializes the `message_\ndata` (i.e., the `DataHolderSeq`) via the `readParticipantGenericMessage → readDataHolderSeq` path. The `DataHolderSe\nq` is parsed sequentially: a sequence count (`uint32`), and for each DataHolder the `class_id` string (e.g. `DDS:Auth:PKI-\nDH:1.0+Req`), string properties (a sequence of key/value pairs), and binary properties (a name plus an octet-vector). \n;The parser operates at a stateless level and does not know higher-layer state (for example, whether the handshake has alr\neady completed), so it fully unfolds the structure before distinguishing legitimate from malformed traffic. Because R\nTPS permits duplicates, delays, and retransmissions, a receiver must perform at least minimal structural parsing to check \nidentity and sequence numbers before discarding or processing a message; the current implementation, however, does not \"p\neek\" only at a minimal header and instead parses the entire `DataHolderSeq`. As a result, prior to versions 3.4.1, 3.3.1,\n and 2.6.11, this parsing behavior can trigger an out-of-memory condition and remotely terminate the process. Versions 3.4\n.1, 3.3.1, and 2.6.11 patch the issue." } ] } ], "references": [ { "url": "https://security-tracker.debian.org/tracker/CVE-2025-62603" }, { "url": "https://github.com/eProsima/Fast-DDS/commit/354218514d32beac963ff5c306f1cf159ee37c5f" }, { "url": "https://github.com/eProsima/Fast-DDS/commit/ced3b6f92d928af1eae77d5fe889878128ad421a" }, { "url": "https://github.com/eProsima/Fast-DDS/commit/a726e6a5daba660418d1f7c05b6f203c17747d2b" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "version": "4.0", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subAvailabilityImpact": "NONE", "exploitMaturity": "UNREPORTED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "baseSeverity": "LOW", "baseScore": 1.7, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U" } } ], "source": { "discovery": "UNKNOWN" }, "x_generator": { "engine": "Vulnogram 0.5.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-02-03T20:44:04.457672Z", "id": "CVE-2025-62603", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-03T20:44:12.618Z" } } ] } }