CyberRota Analysis
AI-GeneratedThe vulnerability affects the webtransport-go implementation of the WebTransport protocol, where the Session.parseNextCapsule() function can lead to memory and resource exhaustion due to unbounded allocation of large unknown capsules. A malicious peer can exploit this flaw to disrupt or crash the client or server process by overwhelming it with excessive memory usage. Organizations utilizing versions prior to 0.11.1 should prioritize updating to the latest version 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
webtransport-go is an implementation of the WebTransport protocol. Prior to 0.11.1, Session.parseNextCapsule() in session.go skips an unknown WebTransport capsule on the HTTP/3 request stream by calling io.ReadAll on the capsule reader, retaining the complete declared capsule body in memory. A malicious peer can send a large unknown capsule and cause a client or server to allocate memory for the full payload; QUIC flow control does not bound the total retained allocation because reading advances the flow-control window while the received bytes remain in memory. The resulting memory and resource exhaustion can disrupt or crash the affected process. This issue is fixed in version 0.11.1.