CyberRota Analysis
AI-GeneratedOpenSSL versions prior to 4.16.0 are vulnerable to a memory exhaustion attack due to improper handling of fragmented ClientHello messages in the dtls_server_input_handler() and create_new_connected_udp_socket() functions. This flaw allows unauthenticated remote attackers to exploit the vulnerability without needing valid credentials or source IP validation, potentially leading to denial-of-service conditions. Organizations using affected versions of OpenSSL, particularly those implementing TURN and STUN servers, should prioritize upgrading to version 4.16.0 to mitigate this high-severity risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.16.0, dtls_server_input_handler() and create_new_connected_udp_socket() in src/apps/relay/dtls_listener.c retain OpenSSL dtls1_reassemble_fragment() state for a 35-byte fragmented ClientHello declaring a 650,000-byte handshake before cookie validation, allowing an unauthenticated remote sender using fresh UDP tuples to exhaust memory without TURN credentials, a completed handshake, a valid cookie, or source spoofing. This issue is fixed in version 4.16.0.