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Ubuntu: USN-4956-1 (CVE-2021-21419): Eventlet vulnerability

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Ubuntu: USN-4956-1 (CVE-2021-21419): Eventlet vulnerability

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
05/07/2021
Created
05/20/2021
Added
05/18/2021
Modified
03/22/2023

Description

Eventlet is a concurrent networking library for Python. 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. A patch in version 0.31.0 restricts websocket frame to reasonable limits. As a workaround, restricting memory usage via OS limits would help against overall machine exhaustion, but there is no workaround to protect Eventlet process.

Solution(s)

  • ubuntu-upgrade-python3-eventlet

References

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