{"id":"UBUNTU-CVE-2023-39946","details":"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.","modified":"2026-04-22T16:50:32.340845Z","published":"2023-08-11T14:15:00Z","related":["USN-6306-1"],"upstream":["CVE-2023-39946"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-39946"},{"type":"REPORT","url":"https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-j297-rg6j-m7hx"},{"type":"REPORT","url":"https://github.com/eProsima/Fast-DDS/commit/7c1c611f2f70ec238fbde30a9ed044d99191e4fb"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6306-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-39946"}],"affected":[{"package":{"name":"fastdds","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/fastdds@2.5.0+ds-3ubuntu0.1~esm1?arch=source&distro=esm-apps/jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0+ds-3ubuntu0.1~esm1"}]}],"versions":["2.1.0+ds-9","2.4.1+ds-1","2.5.0+ds-3"],"ecosystem_specific":{"binaries":[{"binary_name":"fastdds-tools","binary_version":"2.5.0+ds-3ubuntu0.1~esm1"},{"binary_name":"libfastrtps2.5","binary_version":"2.5.0+ds-3ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-39946.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}