CVE-2021-21419
MEDIUM5.3EPSS 0.13%Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet
描述
### 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: [email protected] or https://t.me/temotor
受影響套件(3)
- Debian/python-eventletfrom 0, < 0.26.1-7
- PyPI/eventlet>= 0.10, < 0.31.0
- PyPI/eventlet>= 0.10.0, < 0.31.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
參考連結(8)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-21419
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2021-21419
- PATCHhttps://github.com/eventlet/eventlet
- WEBhttps://github.com/eventlet/eventlet/commit/1412f5e4125b4313f815778a1acb4d3336efcd07
- WEBhttps://github.com/eventlet/eventlet/security/advisories/GHSA-9p9m-jm8w-94p2
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/eventlet/PYSEC-2021-12.yaml
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/2WJFSBPLCNSZNHYQC4QDRDFRTEZRMD2L
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/R5JZP4LZOSP7CUAM3GIRW6PIAWKH5VGB