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AUSCERT External Security Bulletin Redistribution
ESB-2021.2362
Release of OpenShift Serverless Client kn 1.16.0
14 July 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: OpenShift Serverless Client
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-33196 CVE-2021-31525 CVE-2021-27918
Reference: ESB-2021.2298
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:2704
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Red Hat Security Advisory
Synopsis: Moderate: Release of OpenShift Serverless Client kn 1.16.0
Advisory ID: RHSA-2021:2704-01
Product: Red Hat OpenShift Serverless
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2704
Issue date: 2021-07-13
CVE Names: CVE-2021-27918 CVE-2021-31525 CVE-2021-33196
=====================================================================
1. Summary:
Release of OpenShift Serverless Client kn 1.16.0
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 1.16.0 provides a CLI to interact
with Red Hat OpenShift Serverless 1.16.0. The kn CLI is delivered as an RPM
package for installation on RHEL platforms, and as binaries for non-Linux
platforms.
Security Fix(es):
* golang: encoding/xml: infinite loop when using xml.NewTokenDecoder with a
custom TokenReader (CVE-2021-27918)
* golang: net/http: panic in ReadRequest and ReadResponse when reading a
very large header (CVE-2021-31525)
* golang: archive/zip: malformed archive may cause panic or memory
exhaustion (CVE-2021-33196)
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_applications/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
5. Bugs fixed (https://bugzilla.redhat.com/):
1937901 - CVE-2021-27918 golang: encoding/xml: infinite loop when using xml.NewTokenDecoder with a custom TokenReader
1958341 - CVE-2021-31525 golang: net/http: panic in ReadRequest and ReadResponse when reading a very large header
1965503 - CVE-2021-33196 golang: archive/zip: Malformed archive may cause panic or memory exhaustion
1971449 - Release of Openshift Serverless Client 1.16.0
6. Package List:
Openshift Serverless 1 on RHEL 8Base:
Source:
openshift-serverless-clients-0.22.0-3.el8.src.rpm
ppc64le:
openshift-serverless-clients-0.22.0-3.el8.ppc64le.rpm
s390x:
openshift-serverless-clients-0.22.0-3.el8.s390x.rpm
x86_64:
openshift-serverless-clients-0.22.0-3.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-2021-27918
https://access.redhat.com/security/cve/CVE-2021-31525
https://access.redhat.com/security/cve/CVE-2021-33196
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
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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