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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: Red Hat OpenStack Platform 16.2.4 (protobuf) security update
Advisory ID:       RHSA-2022:8847-01
Product:           Red Hat OpenStack Platform
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:8847
Issue date:        2022-12-07
CVE Names:         CVE-2021-22570 
=====================================================================

1. Summary:

An update for protobuf is now available for Red Hat OpenStack Platform
16.2.4 (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.

2. Relevant releases/architectures:

Red Hat OpenStack Platform 16.2 - noarch

3. Description:

Protocol Buffers are a way of encoding structured data in an efficient
yet extensible format. Google uses Protocol Buffers for almost all of
its internal RPC protocols and file formats.

Protocol buffers are a flexible, efficient, automated mechanism for
serializing structured data – think XML, but smaller, faster, and
simpler. You define how you want your data to be structured once, then
you can use special generated source code to easily write and read
your structured data to and from a variety of data streams and using a
variety of languages. You can even update your data structure without
breaking deployed programs that are compiled against the old format. This
package contains Protocol Buffers compiler for all programming
languages and C++ headers and Static libraries for Protocol Buffers built
with optimize_for = LITE_RUNTIME.

Security Fix(es):

* Incorrect parsing of nullchar in the proto symbol leads to Nullptr
dereference (CVE-2021-22570)

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

2049429 - CVE-2021-22570 protobuf: Incorrect parsing of nullchar in the proto symbol leads to Nullptr dereference

6. Package List:

Red Hat OpenStack Platform 16.2:

Source:
protobuf-3.6.1-6.el8ost.src.rpm

noarch:
python3-protobuf-3.6.1-6.el8ost.noarch.rpm

Red Hat OpenStack Platform 16.2:

Source:
protobuf-3.6.1-6.el8ost.src.rpm

noarch:
python3-protobuf-3.6.1-6.el8ost.noarch.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2021-22570
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2022 Red Hat, Inc.
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