GHSA-9p9m-jm8w-94p2
Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet
At a glance
- Published
- Updated
- CVE
- CVE-2021-21419
- Aliases
- PYSEC-2021-12
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS_V4
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Description
### Impact 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. ### Patches Version 0.31.0 restricts websocket frame to reasonable limits. ### Workarounds Restricting memory usage via OS limits would help against overall machine exhaustion. No workaround to protect Eventlet process. ### For more information If you have any questions or comments about this advisory: * Open an issue in [eventlet](https://github.com/eventlet/eventlet/issues) * Contact current maintainers. At 2021-03: temotor@gmail.com or https://t.me/temotor
Affected packages
| Package | Versions |
|---|---|
| PyPI · eventlet | introduced 0.10, fixed 0.31.0 |
References
- https://github.com/eventlet/eventlet/security/advisories/GHSA-9p9m-jm8w-94p2 WEB
- https://nvd.nist.gov/vuln/detail/CVE-2021-21419 ADVISORY
- https://github.com/eventlet/eventlet/commit/1412f5e4125b4313f815778a1acb4d3336efcd07 WEB
- https://github.com/eventlet/eventlet PACKAGE
- https://github.com/pypa/advisory-database/tree/main/vulns/eventlet/PYSEC-2021-12.yaml WEB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2WJFSBPLCNSZNHYQC4QDRDFRTEZRMD2L WEB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R5JZP4LZOSP7CUAM3GIRW6PIAWKH5VGB WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |