RHSA-2021:3555 - Security Advisory

Topic

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.

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.

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

Affected Products

• Red Hat Openshift Serverless 1 x86_64
• Red Hat OpenShift Serverless for IBM Power, little endian 1 ppc64le
• Red Hat OpenShift Serverless for IBM Z and LinuxONE 1 s390x

Fixes

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

CVEs

• CVE-2021-3703
• CVE-2021-27918
• CVE-2021-31525
• CVE-2021-33195
• CVE-2021-33196
• CVE-2021-33197
• CVE-2021-33198
• CVE-2021-34558

References

• 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