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  5. CVE-2021-21419

CVE-2021-21419: Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet

May 7, 2021 (updated September 20, 2024)

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.

References

  • github.com/advisories/GHSA-9p9m-jm8w-94p2
  • github.com/eventlet/eventlet
  • github.com/eventlet/eventlet/commit/1412f5e4125b4313f815778a1acb4d3336efcd07
  • github.com/eventlet/eventlet/security/advisories/GHSA-9p9m-jm8w-94p2
  • github.com/pypa/advisory-database/tree/main/vulns/eventlet/PYSEC-2021-12.yaml
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2WJFSBPLCNSZNHYQC4QDRDFRTEZRMD2L
  • lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R5JZP4LZOSP7CUAM3GIRW6PIAWKH5VGB
  • nvd.nist.gov/vuln/detail/CVE-2021-21419

Code Behaviors & Features

Detect and mitigate CVE-2021-21419 with GitLab Dependency Scanning

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Affected versions

All versions starting from 0.10 before 0.31.0

Fixed versions

  • 0.31.0

Solution

Upgrade to version 0.31.0 or above.

Impact 5.3 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Learn more about CVSS

Weakness

  • CWE-400: Uncontrolled Resource Consumption

Source file

pypi/eventlet/CVE-2021-21419.yml

Spotted a mistake? Edit the file on GitLab.

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