Impact A websocket peer may exhaust memory on Eventlet side by sending very large websocket frames. Malicious peer may exhaust memory on Eventlet side by sending highly compressed data frame.

Patches Version 0.31.0 restricts websocket frame to reasonable limits.

Workarounds Restricting memory usage via OS limits would help against overall machine exhaustion. No workaround to protect Eventlet process.

For more information If you have any questions or comments about this advisory: Open an issue in eventlet Contact current maintainers. At 2021-03: temotor@gmail.com or https://t.me/temotor