CVE-2023-50257 – Disconnect Vulnerability in RTPS Packets Used by SROS2

https://notcve.org/view.php?id=CVE-2023-50257

eProsima Fast DDS (formerly Fast RTPS) is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Even with the application of SROS2, due to the issue where the data (`p[UD]`) and `guid` values used to disconnect between nodes are not encrypted, a vulnerability has been discovered where a malicious attacker can forcibly disconnect a Subscriber and can deny a Subscriber attempting to connect. Afterwards, if the attacker sends the packet for disconnecting, which is data (`p[UD]`), to the Global Data Space (`239.255.0.1:7400`) using the said Publisher ID, all the Subscribers (Listeners) connected to the Publisher (Talker) will not receive any data and their connection will be disconnected. Moreover, if this disconnection packet is sent continuously, the Subscribers (Listeners) trying to connect will not be able to do so. Since the initial commit of the `SecurityManager.cpp` code (`init`, `on_process_handshake`) on Nov 8, 2016, the Disconnect Vulnerability in RTPS Packets Used by SROS2 has been present prior to versions 2.13.0, 2.12.2, 2.11.3, 2.10.3, and 2.6.7. eProsima Fast DDS (anteriormente Fast RTPS) es una implementación en C++ del estándar del Servicio de distribución de datos del Object Management Group. • https://github.com/eProsima/Fast-DDS/commit/072cbc9d6a71d869a5cbed1873c0cdd6cf67cda4 https://github.com/eProsima/Fast-DDS/commit/e1869863c06db7fbb366ae53760fbe6e754be026 https://github.com/eProsima/Fast-DDS/commit/f07a0213e655202188840b864be4438ae1067a13 https://github.com/eProsima/Fast-DDS/commit/f2e5ceae8fbea0a6c9445a366faaca0b98a8ef86 https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-v5r6-8mvh-cp98 • CWE-284: Improper Access Control •