GHSA-9p9m-jm8w-94p2

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GHSA-9p9m-jm8w-94p2

Summary: Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet

Details: ### 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](https://github.com/eventlet/eventlet/issues) * Contact current maintainers. At 2021-03: [email protected] or https://t.me/temotor

References: https://github.com/eventlet/eventlet/security/advisories/GHSA-9p9m-jm8w-94p2, https://nvd.nist.gov/vuln/detail/CVE-2021-21419, https://github.com/eventlet/eventlet/commit/1412f5e4125b4313f815778a1acb4d3336efcd07, https://github.com/eventlet/eventlet, https://github.com/pypa/advisory-database/tree/main/vulns/eventlet/PYSEC-2021-12.yaml, https://lists.fedoraproject.org/archives/list/[email protected]/message/2WJFSBPLCNSZNHYQC4QDRDFRTEZRMD2L, https://lists.fedoraproject.org/archives/list/[email protected]/message/R5JZP4LZOSP7CUAM3GIRW6PIAWKH5VGB