Bug 1958407 (CVE-2021-21419) - CVE-2021-21419 python-eventlet: improper handling of highly compressed data and memory allocation with excessive size allows DoS
Summary: CVE-2021-21419 python-eventlet: improper handling of highly compressed data a...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-21419
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1958408 1958409 1958410 1958802 1958838 1959271 1959272 1960182
Blocks: 1958411
TreeView+ depends on / blocked
 
Reported: 2021-05-07 20:32 UTC by Guilherme de Almeida Suckevicz
Modified: 2023-09-20 14:30 UTC (History)
21 users (show)

Fixed In Version: eventlet 0.31.0
Clone Of:
Environment:
Last Closed: 2021-07-28 01:07:37 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:2437 0 None None None 2021-07-27 22:07:37 UTC
Red Hat Product Errata RHSA-2021:5071 0 None None None 2021-12-09 20:16:45 UTC

Description Guilherme de Almeida Suckevicz 2021-05-07 20:32:29 UTC 
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.

Reference:
https://github.com/eventlet/eventlet/security/advisories/GHSA-9p9m-jm8w-94p2
Comment 1 Guilherme de Almeida Suckevicz 2021-05-07 20:33:30 UTC 
Created python-eventlet tracking bugs for this issue:

Affects: epel-all [bug 1958409]
Affects: fedora-all [bug 1958408]
Affects: openstack-rdo [bug 1958410]
Comment 2 Hardik Vyas 2021-05-10 06:41:51 UTC 
Upstream fix: https://github.com/eventlet/eventlet/commit/1412f5e4125b4313f815778a1acb4d3336efcd07
Comment 8 Hardik Vyas 2021-05-11 03:55:23 UTC 
Statement:

In OpenShift Container Platform 4, the python-eventlet package is only used in Ironic container images, used for Baremetal provisioning, and Kuryr SDN container images, used for deployments on OpenStack.

In Red Hat Gluster Storage 3, python-eventlet package was primarily shipped as a dependency of openstack-swift. However, Openstack Swift is no longer supported with the recent release of Red Hat Gluster Storage 3.5.
Comment 15 errata-xmlrpc 2021-07-27 22:07:38 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.8

Via RHSA-2021:2437 https://access.redhat.com/errata/RHSA-2021:2437
Comment 16 Product Security DevOps Team 2021-07-28 01:07:37 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-21419
Comment 17 errata-xmlrpc 2021-12-09 20:16:44 UTC 
This issue has been addressed in the following products:

  Red Hat OpenStack Platform 16.1

Via RHSA-2021:5071 https://access.redhat.com/errata/RHSA-2021:5071
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