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.
Published: 2021-05-07
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-0072 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.
Github GHSA Github GHSA GHSA-9p9m-jm8w-94p2 Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet
Ubuntu USN Ubuntu USN USN-4956-1 Eventlet vulnerability
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Subscriptions

Eventlet Eventlet
Fedoraproject Fedora
Redhat Openshift Openstack
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2024-08-03T18:09:16.080Z

Reserved: 2020-12-22T00:00:00.000Z

Link: CVE-2021-21419

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-05-07T15:15:07.407

Modified: 2024-11-21T05:48:19.403

Link: CVE-2021-21419

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-05-06T00:00:00Z

Links: CVE-2021-21419 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses