medium5.3

CVE-2021-21419

Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet

Impact

### 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

Ecosystem	Package	Affected	Fixed in
pip	`eventlet`	>= 0.10, < 0.31.0	0.31.0

Affected products

Vendor	Product	Affected versions
Eventlet	Eventlet	from 0.10 before 0.31.0
Fedoraproject	Fedora	Versions 33, 34

Weakness classification

CWE-400

Impact

Affected packages

Affected products

Weakness classification

References