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

Synopsis:          Moderate: Release of OpenShift Serverless Client kn 1.17.0
Advisory ID:       RHSA-2021:3555-01
Product:           Red Hat OpenShift Serverless
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:3555
Issue date:        2021-09-16
CVE Names:         CVE-2021-3703 CVE-2021-27918 CVE-2021-31525 
                   CVE-2021-33195 CVE-2021-33196 CVE-2021-33197 
                   CVE-2021-33198 CVE-2021-34558 
=====================================================================

1. Summary:

Release of OpenShift Serverless Client kn 1.17.0

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:

Openshift Serverless 1 on RHEL 8Base - ppc64le, s390x, x86_64

3. Description:

Red Hat OpenShift Serverless Client kn 1.17.0 provides a CLI to interact
with Red Hat OpenShift Serverless 1.17.0. The kn CLI is delivered as an RPM
package for installation on RHEL platforms, and as binaries for non-Linux
platforms.

Security Fix(es):

* serverless: incomplete fix for CVE-2021-27918 / CVE-2021-31525 /
CVE-2021-33196 (CVE-2021-3703)

* golang: crypto/tls: certificate of wrong type is causing TLS client to
panic
(CVE-2021-34558)
* golang: net: lookup functions may return invalid host names
(CVE-2021-33195)
* golang: net/http/httputil: ReverseProxy forwards connection headers if
first one is empty (CVE-2021-33197)
* golang: match/big.Rat: may cause a panic or an unrecoverable fatal error
if passed inputs with very large exponents (CVE-2021-33198)

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

4. Solution:

See the Red Hat OpenShift Container Platform 4.6 documentation at:
https://access.redhat.com/documentation/en-us/openshift_container_platform/
4.6/html/serverless/index
See the Red Hat OpenShift Container Platform 4.7 documentation at:
https://access.redhat.com/documentation/en-us/openshift_container_platform/
4.7/html/serverless/index
See the Red Hat OpenShift Container Platform 4.8 documentation at:
https://access.redhat.com/documentation/en-us/openshift_container_platform/
4.8/html/serverless/index

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

1983596 - CVE-2021-34558 golang: crypto/tls: certificate of wrong type is
 causing TLS client to panic
1983656 - Release of Openshift Serverless Client 1.17.0
1989564 - CVE-2021-33195 golang: net: lookup functions may return invalid host
 names
1989570 - CVE-2021-33197 golang: net/http/httputil: ReverseProxy forwards
 connection headers if first one is empty
1989575 - CVE-2021-33198 golang: math/big.Rat: may cause a panic or an
 unrecoverable fatal error if passed inputs with very large exponents
1992955 - CVE-2021-3703 serverless: incomplete fix for CVE-2021-27918 /
 CVE-2021-31525 / CVE-2021-33196

6. Package List:

Openshift Serverless 1 on RHEL 8Base:

Source:
openshift-serverless-clients-0.23.2-1.el8.src.rpm

ppc64le:
openshift-serverless-clients-0.23.2-1.el8.ppc64le.rpm

s390x:
openshift-serverless-clients-0.23.2-1.el8.s390x.rpm

x86_64:
openshift-serverless-clients-0.23.2-1.el8.x86_64.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-2021-3703
https://access.redhat.com/security/cve/CVE-2021-27918
https://access.redhat.com/security/cve/CVE-2021-31525
https://access.redhat.com/security/cve/CVE-2021-33195
https://access.redhat.com/security/cve/CVE-2021-33196
https://access.redhat.com/security/cve/CVE-2021-33197
https://access.redhat.com/security/cve/CVE-2021-33198
https://access.redhat.com/security/cve/CVE-2021-34558
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/openshift_container_platform/4.6/html/serverless/index
https://access.redhat.com/documentation/en-us/openshift_container_platform/4.7/html/serverless/index
https://access.redhat.com/documentation/en-us/openshift_container_platform/4.8/html/serverless/index

8. Contact:

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

Copyright 2021 Red Hat, Inc.
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