CVE-2023-39946 Information

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.

Reference

https://github.com/eProsima/Fast-DDS/commit/349227005827e8a67a0406b823138b5068cc47dc https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-j297-rg6j-m7hx