Resource Exhaustion Affecting python-eventlet package, versions <0.30.0-0ubuntu2


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.1% (28th percentile)

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  • Snyk IDSNYK-UBUNTU2204-PYTHONEVENTLET-2777756
  • published11 May 2021
  • disclosed7 May 2021

Introduced: 7 May 2021

CVE-2021-21419  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Ubuntu:22.04 python-eventlet to version 0.30.0-0ubuntu2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-eventlet package and not the python-eventlet package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1