DescriptionEventlet 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs988342

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python-eventlet (PTS)buster0.20.0-6vulnerable
sid, trixie0.35.1-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[buster] - python-eventlet <no-dsa> (Minor issue)
[stretch] - python-eventlet <no-dsa> (Minor issue)
Fixed by:
Issue present as well in versions before introduction of per-message-defalte extension
or compression extension support.
Patch for 0.20 by SuSE:

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