Important: Red Hat OpenStack Platform 16.1 (python-twisted) security update

Topic

An update for python-twisted 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 Important. 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

Twisted is a networking engine written in Python, supporting numerous
protocols. It contains a web server, numerous chat clients, chat servers,
mail servers and more.

Security Fix(es):

• SSH client and server denial of service during SSH handshake

(CVE-2022-21716)

• Secret exposure in cross-origin redirects (CVE-2022-21712)

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

Fixes

• BZ - 2051865 - CVE-2022-21712 dev-python/twisted: secret exposure in cross-origin redirects
• BZ - 2060960 - CVE-2022-21716 python-twisted: SSH client and server denial of service during SSH handshake

CVEs

• CVE-2022-21712
• CVE-2022-21716

References

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