In Kubernetes, if the logging level is set to at least 9, authorization and bearer tokens will be written to log files. This can occur both in API server logs and client tool output like kubectl. This affects <= v1.19.3, <= v1.18.10, <= v1.17.13, < v1.20.0-alpha2.

An update of the kubernetes package has been released.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:5085 advisory.

    Red Hat OpenShift Data Foundation is software-defined storage integrated with and optimized for the Red     Hat OpenShift Container Platform. Red Hat OpenShift Data Foundation is a highly scalable, production-grade     persistent storage for stateful applications running in the Red Hat OpenShift Container Platform. In     addition to persistent storage, Red Hat OpenShift Data Foundation provisions a multicloud data management     service with an S3 compatible API.

    Security Fix(es):

    * kubernetes: Incomplete fix for CVE-2019-11250 allows for token leak in logs when logLevel >= 9     (CVE-2020-8565)

    * 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: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large     exponents (CVE-2021-33198)

    * golang: crypto/tls: certificate of wrong type is causing TLS client to panic (CVE-2021-34558)

    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.

    These updated  Multicloud Object Gateway command line (mcg) packages     include numerous bug fixes and enhancements. Space precludes documenting     all of these changes in this advisory. Users are directed to the Red Hat OpenShift Data Foundation Release     Notes for information on the most     significant of these changes:

    https://access.redhat.com//documentation/en-     us/red_hat_openshift_data_foundation/4.9/html/4.9_release_notes/index

    All Red Hat OpenShift Data Foundation users are advised to upgrade to these updated packages, which     provide numerous bug fixes and enhancements.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

= Required Actions

== Kubernetes & etcd (Security fixes)

This fix involves an upgrade of Kubernetes and some add-ons. See https://documentation.suse.com/suse-caasp/4.2/html/caasp-admin/_cluste r_upd ates.html#_updating_kubernetes_components for the upgrade procedure.

== Skuba & helm/helm3

In order to update skuba and helm or helm 3, you need to update the management workstation. See detailed instructions at https://documentation.suse.com/suse-caasp/4.2/html/caasp-admin/_cluste r_upd ates.html#_update_management_workstation

= Known Issues

Modifying the file `/etc/sysconfig/kubelet` directly is not supported:
documentation at https://documentation.suse.com/suse-caasp/4.2/html/caasp-admin/_miscel laneo us.html#_configuring_kubelet

Be sure to check the Release Notes at https://www.suse.com/releasenotes/x86_64/SUSE-CAASP/4/#_changes_in_4_2
_4 for any additional known issues or behavioral changes.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
203702	Photon OS 3.0: Kubernetes PHSA-2021-3.0-0247	Nessus	PhotonOS Local Security Checks	medium
194270	RHEL 8 : Red Hat OpenShift Data Foundation 4.9.0 (RHSA-2021:5085)	Nessus	Red Hat Local Security Checks	high
148283	Photon OS 1.0: Kubernetes PHSA-2021-1.0-0376	Nessus	PhotonOS Local Security Checks	medium
144173	SUSE SLES15 Security Update : Security changes in Kubernetes, etcd, / helm; Bugfix in cri-o package (SUSE-SU-2020:3760-1)	Nessus	SuSE Local Security Checks	medium

Detections

Analytics

CVE-2020-8565

medium

Tenable Plugins

medium

high

medium

medium