CVE-2023-39946

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Prior to versions 2.11.1, 2.10.2, 2.9.2, and 2.6.6, heap can be overflowed by providing a PID_PROPERTY_LIST parameter that contains a CDR string with length larger than the size of actual content. In `eprosima::fastdds::dds::ParameterPropertyList_t::push_back_helper`, `memcpy` is called to first copy the octet'ized length and then to copy the data into `properties_.data`. At the second memcpy, both `data` and `size` can be controlled by anyone that sends the CDR string to the discovery multicast port. This can remotely crash any Fast-DDS process. Versions 2.11.1, 2.10.2, 2.9.2, and 2.6.6 contain a patch for this issue."}, {"lang": "es", "value": "eprosima Fast DDS es una implementaci\u00f3n en C++ del est\u00e1ndar Data Distribution Service del Object Management Group. Antes de las versiones 2.11.1, 2.10.2, 2.9.2 y 2.6.6, se pod\u00eda desbordar el heap proporcionando un par\u00e1metro PID_PROPERTY_LIST que contuviera una cadena CDR con una longitud mayor que el tama\u00f1o del contenido real. En `eprosima::fastdds::dds::ParameterPropertyList_t::push_back_helper`, se llama a `memcpy` para copiar primero la longitud octet'izada y luego copiar los datos en `properties_.data`. En el segundo memcpy, tanto `data` como `size` pueden ser controlados por cualquiera que env\u00ede la cadena CDR al puerto multicast de descubrimiento. Esto puede bloquear remotamente cualquier proceso Fast-DDS. Las versiones 2.11.1, 2.10.2, 2.9.2 y 2.6.6 contienen un parche para este problema.\n"}], "id": "CVE-2023-39946", "lastModified": "2026-06-17T06:13:00.303", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-39946", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-10-10T14:22:11.929256Z", "version": "2.0.3"}}]}, "published": "2023-08-11T14:15:13.483", "references": [{"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/eProsima/Fast-DDS/commit/349227005827e8a67a0406b823138b5068cc47dc"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-j297-rg6j-m7hx"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2023/dsa-5481"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/eProsima/Fast-DDS/commit/349227005827e8a67a0406b823138b5068cc47dc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-j297-rg6j-m7hx"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2023/dsa-5481"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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