Описание
Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet
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
- Contact current maintainers. At 2021-03: temotor@gmail.com or https://t.me/temotor
Ссылки
- https://github.com/eventlet/eventlet/security/advisories/GHSA-9p9m-jm8w-94p2
- https://nvd.nist.gov/vuln/detail/CVE-2021-21419
- https://github.com/eventlet/eventlet/commit/1412f5e4125b4313f815778a1acb4d3336efcd07
- https://github.com/pypa/advisory-database/tree/main/vulns/eventlet/PYSEC-2021-12.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2WJFSBPLCNSZNHYQC4QDRDFRTEZRMD2L
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R5JZP4LZOSP7CUAM3GIRW6PIAWKH5VGB
Пакеты
eventlet
>= 0.10, < 0.31.0
0.31.0
Связанные уязвимости
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.
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.
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.
Eventlet is a concurrent networking library for Python. A websocket pe ...
Уязвимость сетевой библиотеки Eventlet программного обеспечения Python, связанная с неконтролируемым расходом ресурсов, позволяющая нарушителю выполнить отказ в обслуживании