CVE-2023-39946

Date: August 11, 2023

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.

Language: C++