Kurz gesagt
- CVE-2021-21419 ist eine Schwachstelle (MITTEL (CVSS 5.3)) in eventlet, eventlet (eventlet).
- Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 1.8%, höher als bei 78.4% aller Schwachstellen.
- Abhilfe: auf 0.31.0 oder neuer aktualisieren.
| Package | Affected versions | Patched versions |
|---|
| eventlet PyPI | ≥ 0.10, < 0.31.0≥ 0.10.0, < 0.31.0
| 0.31.0
|
| eventlet | ≥ 0.10, < 0.31.0
| 0.31.0
|
Description
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:
NVD 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.
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