CVE-2020-8552: Kubernetes API server denial of service
First published: Tue Feb 04 2020(Updated: )
A denial of service vulnerability was found in the Kubernetes API server. This flaw allows a remote attacker to send repeated, crafted HTTP requests to exhaust available memory and cause a crash.
Credit: jordan@liggitt.net jordan@liggitt.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/atomic-enterprise-service-catalog | <1:3.11.219-1.git.1.717017c.el7 | 1:3.11.219-1.git.1.717017c.el7 |
| redhat/atomic-openshift | <0:3.11.219-1.git.0.0c21387.el7 | 0:3.11.219-1.git.0.0c21387.el7 |
| redhat/atomic-openshift-cluster-autoscaler | <0:3.11.219-1.git.1.1ad3e34.el7 | 0:3.11.219-1.git.1.1ad3e34.el7 |
| redhat/atomic-openshift-descheduler | <0:3.11.219-1.git.1.7e5b9ee.el7 | 0:3.11.219-1.git.1.7e5b9ee.el7 |
| redhat/atomic-openshift-dockerregistry | <0:3.11.219-1.git.1.8323991.el7 | 0:3.11.219-1.git.1.8323991.el7 |
| redhat/atomic-openshift-metrics-server | <0:3.11.219-1.git.1.6fe54fb.el7 | 0:3.11.219-1.git.1.6fe54fb.el7 |
| redhat/atomic-openshift-node-problem-detector | <0:3.11.219-1.git.1.5ae8753.el7 | 0:3.11.219-1.git.1.5ae8753.el7 |
| redhat/atomic-openshift-service-idler | <0:3.11.219-1.git.1.958cdae.el7 | 0:3.11.219-1.git.1.958cdae.el7 |
| redhat/golang-github-openshift-oauth-proxy | <0:3.11.219-1.git.1.076ae14.el7 | 0:3.11.219-1.git.1.076ae14.el7 |
| redhat/golang-github-prometheus-alertmanager | <0:3.11.219-1.git.1.9a593f8.el7 | 0:3.11.219-1.git.1.9a593f8.el7 |
| redhat/golang-github-prometheus-prometheus | <0:3.11.219-1.git.1.3f6e657.el7 | 0:3.11.219-1.git.1.3f6e657.el7 |
| redhat/openshift-ansible | <0:3.11.219-1.git.0.8845382.el7 | 0:3.11.219-1.git.0.8845382.el7 |
| redhat/openshift-enterprise-autoheal | <0:3.11.219-1.git.1.c544df9.el7 | 0:3.11.219-1.git.1.c544df9.el7 |
| redhat/openshift-enterprise-cluster-capacity | <0:3.11.219-1.git.1.ca1ee51.el7 | 0:3.11.219-1.git.1.ca1ee51.el7 |
| redhat/openshift-kuryr | <0:3.11.219-1.git.1.717d59f.el7 | 0:3.11.219-1.git.1.717d59f.el7 |
| redhat/atomic-openshift | <0:3.11.248-1.git.0.92ee8ac.el7 | 0:3.11.248-1.git.0.92ee8ac.el7 |
| redhat/openshift | <0:4.2.29-202004110432.git.0.f7d02c8.el8 | 0:4.2.29-202004110432.git.0.f7d02c8.el8 |
| redhat/openshift | <0:4.3.9-202003230116.git.0.ebf9a26.el7 | 0:4.3.9-202003230116.git.0.ebf9a26.el7 |
| Kubernetes Kubernetes | <=1.15.9 | |
| Kubernetes Kubernetes | >=1.16.0<=1.16.6 | |
| Kubernetes Kubernetes | >=1.17.0<=1.17.2 | |
| Fedoraproject Fedora | =32 | |
| go/k8s.io/apiserver | >=0.17.0<0.17.3 | 0.17.3 |
| go/k8s.io/apiserver | >=0.16.0<0.16.7 | 0.16.7 |
| go/k8s.io/apiserver | <0.15.10 | 0.15.10 |
Remedy
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2020-8552
- https://github.com/kubernetes/kubernetes/issues/89378
- https://github.com/kubernetes/kubernetes/pull/87669
- https://github.com/kubernetes/kubernetes/commit/5978856c4c7f10737a11c9540fe60b8475beecbb
- https://groups.google.com/forum/#!topic/kubernetes-security-announce/2UOlsba2g0s
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3SOCLOPTSYABTE4CLTSPDIFE6ZZZR4LX/
- https://security.netapp.com/advisory/ntap-20200413-0003/
- https://github.com/advisories/GHSA-82hx-w2r5-c2wq (Advisory)
- https://www.cve.org/CVERecord?id=CVE-2020-8552 https://nvd.nist.gov/vuln/detail/CVE-2020-8552 https://github.com/kubernetes/kubernetes/issues/89378 https://groups.google.com/forum/#!topic/kubernetes-security-announce/2UOlsba2g0s
- https://bugzilla.redhat.com/show_bug.cgi?id=1797909
- https://access.redhat.com/errata/RHBA-2020:2215
- https://access.redhat.com/errata/RHSA-2020:2992
- https://access.redhat.com/errata/RHSA-2020:1526
- https://access.redhat.com/errata/RHSA-2020:1527
- https://access.redhat.com/errata/RHSA-2020:2306
- https://access.redhat.com/errata/RHBA-2020:0929
- https://access.redhat.com/errata/RHBA-2020:0930
- https://access.redhat.com/security/cve/cve-2020-8552
- https://github.com/kubernetes/kubernetes/pull/87673
- https://github.com/kubernetes/kubernetes/pull/87681
- https://github.com/kubernetes/kubernetes/pull/87682
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1816395
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1816396
- https://access.redhat.com/errata/RHSA-2020:0933
- https://groups.google.com/forum/#%21topic/kubernetes-security-announce/2UOlsba2g0s
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3SOCLOPTSYABTE4CLTSPDIFE6ZZZR4LX/
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2020-8552?
CVE-2020-8552 is a vulnerability in the Kubernetes API server component that allows for a denial of service attack via successful API requests.
What is the severity of CVE-2020-8552?
The severity of CVE-2020-8552 is medium with a CVSS score of 5.3.
Which versions of Kubernetes are affected by CVE-2020-8552?
Kubernetes versions prior to 1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 are affected by CVE-2020-8552.
How can I fix CVE-2020-8552?
To fix CVE-2020-8552, ensure that you are using Kubernetes version 1.15.9, 1.16.0-1.16.6, or 1.17.0-1.17.2.
Where can I find more information about CVE-2020-8552?
You can find more information about CVE-2020-8552 on the CVE website, NIST's vulnerability database, Kubernetes GitHub issues, Google Groups, and Red Hat Bugzilla and Errata.
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