Vulnerabilities > CVE-2021-21419

CVSS 5.3 - MEDIUM

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

LOW

network

low complexity

eventlet

fedoraproject

NVD

Published: 2021-05-07

Updated: 2024-11-21

Summary

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.

Vulnerable Configurations

Part	Description	Count
Application	Eventlet Eventlet Eventlet 0.10 Eventlet Eventlet 0.11 Eventlet Eventlet 0.12 Eventlet Eventlet 0.13 Eventlet Eventlet 0.14 Eventlet Eventlet 0.15 Eventlet Eventlet 0.15.1 Eventlet Eventlet 0.15.2 Eventlet Eventlet 0.16 Eventlet Eventlet 0.16.1 Eventlet Eventlet 0.17 Eventlet Eventlet 0.17.1 Eventlet Eventlet 0.17.2 Eventlet Eventlet 0.17.3 Eventlet Eventlet 0.17.4 Eventlet Eventlet 0.18.0 Eventlet Eventlet 0.18.1 Eventlet Eventlet 0.18.2 Eventlet Eventlet 0.18.3 Eventlet Eventlet 0.18.4 Eventlet Eventlet 0.19.0 Eventlet Eventlet 0.20.0 Eventlet Eventlet 0.20.1 Eventlet Eventlet 0.21.0 Eventlet Eventlet 0.22.0 Eventlet Eventlet 0.22.1 Eventlet Eventlet 0.23.0 Eventlet Eventlet 0.24.0 Eventlet Eventlet 0.24.1 Eventlet Eventlet 0.25.0 Eventlet Eventlet 0.25.1 Eventlet Eventlet 0.25.2 Eventlet Eventlet 0.26.0 Eventlet Eventlet 0.26.1 Eventlet Eventlet 0.27.0 Eventlet Eventlet 0.28.0 Eventlet Eventlet 0.28.1 Eventlet Eventlet 0.29.0 Eventlet Eventlet 0.29.1 Eventlet Eventlet 0.30.0 Eventlet Eventlet 0.30.1 Eventlet Eventlet 0.30.2 Eventlet Eventlet 0.30.3	43
OS	Fedoraproject Fedoraproject Fedora 33 Fedoraproject Fedora 34	2

Vulnerabilities > CVE-2021-21419 {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Vulnerabilities","item":"https://cyber.vumetric.com/vulns/"},{"@type":"ListItem","position":2,"name":"CVE-2021-21419"}]}

Summary

Vulnerable Configurations

References

Vulnerabilities > CVE-2021-21419