{"api_version":"1","generated_at":"2026-04-23T10:20:40+00:00","cve":"CVE-2023-39946","urls":{"html":"https://cve.report/CVE-2023-39946","api":"https://cve.report/api/cve/CVE-2023-39946.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-39946","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-39946"},"summary":{"title":"CVE-2023-39946","description":"eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. 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.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2023-08-11 14:15:00","updated_at":"2023-08-22 14:21:00"},"problem_types":["CWE-787"],"metrics":[],"references":[{"url":"https://github.com/eProsima/Fast-DDS/commit/349227005827e8a67a0406b823138b5068cc47dc","name":"https://github.com/eProsima/Fast-DDS/commit/349227005827e8a67a0406b823138b5068cc47dc","refsource":"MISC","tags":[],"title":"Validate lengths before using them. · eProsima/Fast-DDS@3492270 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.debian.org/security/2023/dsa-5481","name":"https://www.debian.org/security/2023/dsa-5481","refsource":"MISC","tags":[],"title":"Debian -- Security Information -- DSA-5481-1 fastdds","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-j297-rg6j-m7hx","name":"https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-j297-rg6j-m7hx","refsource":"MISC","tags":[],"title":"Heap overflow in push_back_helper due to a CDR message · Advisory · eProsima/Fast-DDS · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-39946","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-39946","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"39946","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"11.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"39946","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"12.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"39946","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"eprosima","cpe5":"fast_dds","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"39946","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"eprosima","cpe5":"fast_dds","cpe6":"2.11.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2023-39946","qid":"6000204","title":"Debian Security Update for fastdds (DSA 5481-1)"}]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-39946","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. 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