Permissions, Privileges, and Access Controls in Kubernetes - CVE-2019-11247

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Main Vulnerability Database Vulnerabilities #VU30804

Permissions, Privileges, and Access Controls in Kubernetes - CVE-2019-11247

Published: August 29, 2019 / Updated: July 17, 2020


Vulnerability identifier: #VU30804
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-11247
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote authenticated user to read and manipulate data.

The Kubernetes kube-apiserver mistakenly allows access to a cluster-scoped custom resource if the request is made as if the resource were namespaced. Authorizations for the resource accessed in this manner are enforced using roles and role bindings within the namespace, meaning that a user with access only to a resource in one namespace could create, view update or delete the cluster-scoped resource (according to their namespace role privileges). Kubernetes affected versions include versions prior to 1.13.9, versions prior to 1.14.5, versions prior to 1.15.2, and versions 1.7, 1.8, 1.9, 1.10, 1.11, 1.12.


Affected software

Kubernetes
k3s (Alpine package)
openshift-external-storage (Red Hat package)
openvswitch-ovn-kubernetes (Red Hat package)
openshift-eventrouter (Red Hat package)
golang-github-openshift-prometheus-alert-buffer (Red Hat package)
golang-github-prometheus-promu (Red Hat package)
containernetworking-plugins (Red Hat package)
golang-github-prometheus-alertmanager (Red Hat package)
cri-tools (Red Hat package)
ansible-service-broker (Red Hat package)
hawkular-openshift-agent (Red Hat package)
heapster (Red Hat package)
cri-o (Red Hat package)
kubernetes
golang-github-openshift-oauth-proxy (Red Hat package)
image-inspector (Red Hat package)
golang-github-prometheus-prometheus (Red Hat package)
openshift-enterprise-image-registry (Red Hat package)
atomic-openshift-node-problem-detector (Red Hat package)
atomic-openshift-descheduler (Red Hat package)
atomic-openshift (Red Hat package)
atomic-openshift-web-console (Red Hat package)
golang-github-prometheus-node_exporter (Red Hat package)
openshift (Red Hat package)
cockpit (Red Hat package)
Red Hat OpenShift Container Platform
Fedora

How to mitigate CVE-2019-11247

Install update from vendor's website.

Kubernetes - update to 1.15.2
k3s (Alpine package) - update to 0.8.0-r0
Red Hat OpenShift Container Platform - update to 3.9
openshift-external-storage (Red Hat package) - update to 0.0.1-9.git78d6339.el7
openvswitch-ovn-kubernetes (Red Hat package) - update to 0.1.0-3.el7
openshift-eventrouter (Red Hat package) - update to 0.1-3.git5bd9251.el7
golang-github-openshift-prometheus-alert-buffer (Red Hat package) - update to 0-3.gitceca8c1.el7
golang-github-prometheus-promu (Red Hat package) - update to 0-5.git85ceabc.el7
containernetworking-plugins (Red Hat package) - update to 0.5.2-6.el7
golang-github-prometheus-alertmanager (Red Hat package) - update to 0.14.0-2.git30af4d0.el7
cri-tools (Red Hat package) - update to 1.0.0-6.rhaos3.9.git8e6013a.el7
ansible-service-broker (Red Hat package) - update to 1.1.20-2.el7
hawkular-openshift-agent (Red Hat package) - update to 1.2.2-3.el7
heapster (Red Hat package) - update to 1.3.0-4.el7
cri-o (Red Hat package) - update to 1.9.16-3.git858756d.el7
kubernetes - update to 1.15.2-1.fc30
golang-github-openshift-oauth-proxy (Red Hat package) - update to 2.1-3.git885c9f40.el7
image-inspector (Red Hat package) - update to 2.1.3-2.el7
golang-github-prometheus-prometheus (Red Hat package) - update to 2.2.1-2.gitbc6058c.el7
openshift-enterprise-image-registry (Red Hat package) - update to 3.8.0-2.git.216.b6b90bb.el7
atomic-openshift-node-problem-detector (Red Hat package) - update to 3.9.13-2.git.167.5d6b0d4.el7
atomic-openshift-descheduler (Red Hat package) - update to 3.9.13-2.git.267.bb59a3f.el7
atomic-openshift (Red Hat package) - addressed in versions 3.9.101-1.git.0.150f595.el7, 3.10.170-1.git.0.8e592d6.el7
atomic-openshift-web-console (Red Hat package) - update to 3.9.101-1.git.1.601c6d2.el7
golang-github-prometheus-node_exporter (Red Hat package) - update to 3.9.101-1.git.1.8295224.el7
openshift (Red Hat package) - addressed in versions 4.1.10-201908060758.git.0.d81afa6.el7, 4.1.10-201908060758.git.0.d81afa6.el8
cockpit (Red Hat package) - update to 195-2.rhaos.el7

External References

Related Security Bulletins