CVE-2021-21419

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Source
https://cve.org/CVERecord?id=CVE-2021-21419
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-21419.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-21419
Aliases
Downstream
Related
Published
2021-05-07T15:15:07.407Z
Modified
2026-03-14T14:41:48.638985Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Git / github.com/eventlet/eventlet

Affected ranges

Type
GIT
Repo
https://github.com/eventlet/eventlet
Events
Introduced
b0969fc156700b84eefa554bea65088486c104de
Fixed
f717f382d0bfb5cf084a9e69737fa6dfcb2eb5cf
Database specific 
{
    "versions": [
        {
            "introduced": "0.10"
        },
        {
            "fixed": "0.31.0"
        }
    ]
}

Affected versions

v0.*
v0.10
v0.11
v0.12
v0.13
v0.14
v0.15
v0.15.1
v0.15.2
v0.16
v0.16.1
v0.17
v0.17.1
v0.17.2
v0.17.3
v0.17.4
v0.18.0
v0.18.1
v0.18.2
v0.18.4
v0.19.0
v0.20.0
v0.20.1
v0.21.0
v0.22.0
v0.22.1
v0.23.0
v0.24.0
v0.24.1
v0.25.0
v0.25.1
v0.25.2
v0.26.0
v0.26.1
v0.27.0
v0.28.0
v0.28.1
v0.29.0
v0.29.1
v0.30.0
v0.30.1
v0.30.2
v0.30.3

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-21419.json"
unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "33"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "34"
            }
        ]
    }
]