CyberRota Analysis
AI-GeneratedAn unauthenticated remote client can exploit a vulnerability in Coturn versions prior to 4.15.0 by sending a specially crafted STUN message, leading to a denial of service through stream parser desynchronization. This affects the connection of the attacking client but does not impact other clients or the server process. Organizations using Coturn for TURN and STUN services should prioritize upgrading to version 4.15.0 to mitigate this 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 4.15.0, an unauthenticated remote client can send a STUN message over TCP or TLS with a body-length field from 65520 through 65532, causing the uint16_t len variable in stun_get_message_len_str() in src/client/ns_turn_msg.c to wrap when STUN_HEADER_LENGTH is added. The framing layer then consumes only 4 through 16 bytes, treats the remaining bytes as another message, desynchronizes the stream parser, and drops the attacking client's connection. Other clients and the server process are not affected. This issue is fixed in version 4.15.0.