RHSA-2021:5071 - Security Advisory

Topic

An update for python-eventlet is now available for Red Hat OpenStack
Platform 16.1 (Train).

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

Description

Eventlet is a networking library written in Python. It achieves high
scalability by using non-blocking io while at the same time retaining high
programmer usability by using coroutines to make the non-blocking io
operations appear blocking at the source code
level.

Security Fix(es):

• improper handling of highly compressed data and memory allocation with

excessive size allows DoS (CVE-2021-21419)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page listed in the References section.

Solution

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat OpenStack for IBM Power 16.1 ppc64le
• Red Hat OpenStack 16.1 x86_64
• Red Hat OpenStack Director Deployment Tools 16.1 x86_64
• Red Hat OpenStack Director Deployment Tools for IBM Power LE 16.1 ppc64le
• Cinderlib 16.1 x86_64
• Cinderlib for IBM Power LE 16.1 ppc64le

Fixes

• BZ - 1958407 - CVE-2021-21419 python-eventlet: improper handling of highly compressed data and memory allocation with excessive size allows DoS

CVEs

• CVE-2021-21419

References

• https://access.redhat.com/security/updates/classification/#moderate