High severityNVD Advisory· Published Jul 27, 2020· Updated Sep 16, 2024
Kubernetes node setting allows for neighboring hosts to bypass localhost boundary
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.
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
1- Range: prior to 1.18.4
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
12- github.com/advisories/GHSA-wqv3-8cm6-h6wgghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2020-8558ghsaADVISORY
- bugzilla.redhat.com/show_bug.cgighsaWEB
- cve.mitre.org/cgi-bin/cvename.cgighsaWEB
- github.com/bottlerocket-os/bottlerocket/security/advisories/GHSA-wqv3-8cm6-h6wgghsaWEB
- github.com/kubernetes/kubernetes/issues/92315ghsax_refsource_CONFIRMWEB
- groups.google.com/g/kubernetes-announce/c/sI4KmlH3S2I/m/TljjxOBvBQAJghsamailing-listx_refsource_MLISTWEB
- 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
- security.netapp.com/advisory/ntap-20200821-0001/mitrex_refsource_CONFIRM
- www.openwall.com/lists/oss-security/2020/07/08/1ghsaWEB
News mentions
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