Medium severity5.4NVD Advisory· Published Jul 27, 2020· Updated Jun 17, 2026
CVE-2020-8558
CVE-2020-8558
Description
The Kubelet and kube-proxy components in versions 1.1.0-1.16.10, 1.17.0-1.17.6, and 1.18.0-1.18.3 were found to contain a security issue which allows adjacent hosts to reach TCP and UDP services bound to 127.0.0.1 running on the node or in the node's network namespace. Such a service is generally thought to be reachable only by other processes on the same host, but due to this defeect, could be reachable by other hosts on the same LAN as the node, or by containers running on the same node as the service.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
k8s.io/kubernetesGo | >= 1.18.0, < 1.18.4 | 1.18.4 |
k8s.io/kubernetesGo | >= 1.17.0, < 1.17.7 | 1.17.7 |
k8s.io/kubernetesGo | < 1.16.11 | 1.16.11 |
Affected products
29cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*range: >=1.1.0,<=1.16.10
- (no CPE)range: prior to 1.18.4
- osv-coords27 versionspkg:apk/chainguard/kubeflow-pipelinespkg:apk/chainguard/kubeflow-pipelines-apiserverpkg:apk/chainguard/kubeflow-pipelines-cache-deployerpkg:apk/chainguard/kubeflow-pipelines-cache-deployer-compatpkg:apk/chainguard/kubeflow-pipelines-cache_serverpkg:apk/chainguard/kubeflow-pipelines-frontendpkg:apk/chainguard/kubeflow-pipelines-metadata-envoy-configpkg:apk/chainguard/kubeflow-pipelines-metadata-writerpkg:apk/chainguard/kubeflow-pipelines-metadata-writer-compatpkg:apk/chainguard/kubeflow-pipelines-persistence_agentpkg:apk/chainguard/kubeflow-pipelines-scheduledworkflowpkg:apk/chainguard/kubeflow-pipelines-viewer-crd-controllerpkg:apk/chainguard/kubernetes-dns-node-cache-1.17pkg:apk/wolfi/kubeflow-pipelinespkg:apk/wolfi/kubeflow-pipelines-apiserverpkg:apk/wolfi/kubeflow-pipelines-cache-deployerpkg:apk/wolfi/kubeflow-pipelines-cache-deployer-compatpkg:apk/wolfi/kubeflow-pipelines-cache_serverpkg:apk/wolfi/kubeflow-pipelines-frontendpkg:apk/wolfi/kubeflow-pipelines-metadata-envoy-configpkg:apk/wolfi/kubeflow-pipelines-metadata-writerpkg:apk/wolfi/kubeflow-pipelines-metadata-writer-compatpkg:apk/wolfi/kubeflow-pipelines-persistence_agentpkg:apk/wolfi/kubeflow-pipelines-scheduledworkflowpkg:apk/wolfi/kubeflow-pipelines-viewer-crd-controllerpkg:golang/k8s.io/kubernetespkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Tumbleweed
< 0+ 26 more
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: >= 1.18.0, < 1.18.4
- (no CPE)range: < 0.0.20250807T150727-1.1
Patches
Vulnerability mechanics
References
12- github.com/kubernetes/kubernetes/issues/92315nvdExploitMitigationPatchThird Party AdvisoryWEB
- groups.google.com/g/kubernetes-announce/c/sI4KmlH3S2I/m/TljjxOBvBQAJnvdExploitMailing ListMitigationThird Party AdvisoryWEB
- github.com/advisories/GHSA-wqv3-8cm6-h6wgghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2020-8558ghsaADVISORY
- security.netapp.com/advisory/ntap-20200821-0001/nvdThird Party Advisory
- bugzilla.redhat.com/show_bug.cgighsaWEB
- cve.mitre.org/cgi-bin/cvename.cgighsaWEB
- github.com/bottlerocket-os/bottlerocket/security/advisories/GHSA-wqv3-8cm6-h6wgghsaWEB
- groups.google.com/g/kubernetes-security-announce/c/B1VegbBDMTEghsaWEB
- labs.bishopfox.com/tech-blog/bad-pods-kubernetes-pod-privilege-escalationghsaWEB
- security.netapp.com/advisory/ntap-20200821-0001ghsaWEB
- www.openwall.com/lists/oss-security/2020/07/08/1ghsaWEB
News mentions
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