Ecosyste.ms: Advisories
An open API service providing security vulnerability metadata for many open source software ecosystems.
Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXdxdjMtOGNtNi1oNndn
Improper Authentication in Kubernetes
A security issue was discovered in the Kubelet and kube-proxy components of Kubernetes 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. For example, if a cluster administrator runs a TCP service on a node that listens on 127.0.0.1:1234, because of this bug, that service would be potentially reachable by other hosts on the same LAN as the node, or by containers running on the same node as the service. If the example service on port 1234 required no additional authentication (because it assumed that only other localhost processes could reach it), then it could be vulnerable to attacks that make use of this bug.
Permalink: https://github.com/advisories/GHSA-wqv3-8cm6-h6wgJSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXdxdjMtOGNtNi1oNndn
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 2 years ago
Updated: about 1 year ago
CVSS Score: 8.8
CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Identifiers: GHSA-wqv3-8cm6-h6wg, CVE-2020-8558
References:
- https://github.com/bottlerocket-os/bottlerocket/security/advisories/GHSA-wqv3-8cm6-h6wg
- https://nvd.nist.gov/vuln/detail/CVE-2020-8558
- https://github.com/kubernetes/kubernetes/issues/92315
- https://bugzilla.redhat.com/show_bug.cgi?id=1843358
- https://github.com/tabbysable/POC-2020-8558
- https://groups.google.com/g/kubernetes-announce/c/sI4KmlH3S2I/m/TljjxOBvBQAJ
- https://groups.google.com/g/kubernetes-security-announce/c/B1VegbBDMTE
- https://labs.bishopfox.com/tech-blog/bad-pods-kubernetes-pod-privilege-escalation
- https://security.netapp.com/advisory/ntap-20200821-0001/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8558
- https://www.openwall.com/lists/oss-security/2020/07/08/1
- https://github.com/advisories/GHSA-wqv3-8cm6-h6wg
Blast Radius: 37.9
Affected Packages
go:k8s.io/kubernetes
Dependent packages: 2,717Dependent repositories: 20,364
Downloads:
Affected Version Ranges: < 1.16.11, >= 1.17.0, < 1.17.7, >= 1.18.0, < 1.18.4
Fixed in: 1.16.11, 1.17.7, 1.18.4
All affected versions: 0.4.1, 0.4.2, 0.4.3, 0.4.4, 0.5.1, 0.5.2, 0.5.3, 0.5.4, 0.5.5, 0.5.6, 0.6.0, 0.6.1, 0.6.2, 0.7.0, 0.7.1, 0.7.2, 0.7.3, 0.7.4, 0.8.0, 0.8.1, 0.8.2, 0.8.4, 0.9.0, 0.9.1, 0.9.2, 0.9.3, 0.10.0, 0.10.1, 0.11.0, 0.12.0, 0.12.1, 0.12.2, 0.13.0, 0.13.1, 0.13.2, 0.14.0, 0.14.1, 0.14.2, 0.15.0, 0.16.0, 0.16.1, 0.16.2, 0.17.0, 0.17.1, 0.18.0, 0.18.1, 0.18.2, 0.19.0, 0.19.1, 0.19.2, 0.19.3, 0.20.0, 0.20.1, 0.20.2, 0.21.0, 0.21.1, 0.21.2, 0.21.3, 0.21.4, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.0.7, 1.1.0, 1.1.1, 1.1.2, 1.1.3, 1.1.4, 1.1.5, 1.1.6, 1.1.7, 1.1.8, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.2.7, 1.3.0, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 1.3.7, 1.3.8, 1.3.9, 1.3.10, 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.4.6, 1.4.7, 1.4.8, 1.4.9, 1.4.12, 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.5, 1.5.6, 1.5.7, 1.5.8, 1.6.0, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.6.5, 1.6.6, 1.6.7, 1.6.8, 1.6.9, 1.6.10, 1.6.11, 1.6.12, 1.6.13, 1.7.0, 1.7.1, 1.7.2, 1.7.3, 1.7.4, 1.7.5, 1.7.6, 1.7.7, 1.7.8, 1.7.9, 1.7.10, 1.7.11, 1.7.12, 1.7.13, 1.7.14, 1.7.15, 1.7.16, 1.8.0, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.8.5, 1.8.6, 1.8.7, 1.8.8, 1.8.9, 1.8.10, 1.8.11, 1.8.12, 1.8.13, 1.8.14, 1.8.15, 1.9.0, 1.9.1, 1.9.2, 1.9.3, 1.9.4, 1.9.5, 1.9.6, 1.9.7, 1.9.8, 1.9.9, 1.9.10, 1.9.11, 1.10.0, 1.10.1, 1.10.2, 1.10.3, 1.10.4, 1.10.5, 1.10.6, 1.10.7, 1.10.8, 1.10.9, 1.10.10, 1.10.11, 1.10.12, 1.10.13, 1.11.0, 1.11.1, 1.11.2, 1.11.3, 1.11.4, 1.11.5, 1.11.6, 1.11.7, 1.11.8, 1.11.9, 1.11.10, 1.12.0, 1.12.1, 1.12.2, 1.12.3, 1.12.4, 1.12.5, 1.12.6, 1.12.7, 1.12.8, 1.12.9, 1.12.10, 1.13.0, 1.13.1, 1.13.2, 1.13.3, 1.13.4, 1.13.5, 1.13.6, 1.13.7, 1.13.8, 1.13.9, 1.13.10, 1.13.11, 1.13.12, 1.14.0, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.14.5, 1.14.6, 1.14.7, 1.14.8, 1.14.9, 1.14.10, 1.15.0, 1.15.1, 1.15.2, 1.15.3, 1.15.4, 1.15.5, 1.15.6, 1.15.7, 1.15.8, 1.15.9, 1.15.10, 1.15.11, 1.15.12, 1.16.0, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.16.6, 1.16.7, 1.16.8, 1.16.9, 1.16.10, 1.17.0, 1.17.1, 1.17.2, 1.17.3, 1.17.4, 1.17.5, 1.17.6, 1.18.0, 1.18.1, 1.18.2, 1.18.3
All unaffected versions: 1.16.11, 1.16.12, 1.16.13, 1.16.14, 1.16.15, 1.17.7, 1.17.8, 1.17.9, 1.17.10, 1.17.11, 1.17.12, 1.17.13, 1.17.14, 1.17.15, 1.17.16, 1.17.17, 1.18.4, 1.18.5, 1.18.6, 1.18.7, 1.18.8, 1.18.9, 1.18.10, 1.18.11, 1.18.12, 1.18.13, 1.18.14, 1.18.15, 1.18.16, 1.18.17, 1.18.18, 1.18.19, 1.18.20, 1.19.0, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.19.5, 1.19.6, 1.19.7, 1.19.8, 1.19.9, 1.19.10, 1.19.11, 1.19.12, 1.19.13, 1.19.14, 1.19.15, 1.19.16, 1.20.0, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.20.7, 1.20.8, 1.20.9, 1.20.10, 1.20.11, 1.20.12, 1.20.13, 1.20.14, 1.20.15, 1.21.0, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11, 1.21.12, 1.21.13, 1.21.14, 1.22.0, 1.22.1, 1.22.2, 1.22.3, 1.22.4, 1.22.5, 1.22.6, 1.22.7, 1.22.8, 1.22.9, 1.22.10, 1.22.11, 1.22.12, 1.22.13, 1.22.14, 1.22.15, 1.22.16, 1.22.17, 1.23.0, 1.23.1, 1.23.2, 1.23.3, 1.23.4, 1.23.5, 1.23.6, 1.23.7, 1.23.8, 1.23.9, 1.23.10, 1.23.11, 1.23.12, 1.23.13, 1.23.14, 1.23.15, 1.23.16, 1.23.17, 1.24.0, 1.24.1, 1.24.2, 1.24.3, 1.24.4, 1.24.5, 1.24.6, 1.24.7, 1.24.8, 1.24.9, 1.24.10, 1.24.11, 1.24.12, 1.24.13, 1.24.14, 1.24.15, 1.24.16, 1.24.17, 1.25.0, 1.25.1, 1.25.2, 1.25.3, 1.25.4, 1.25.5, 1.25.6, 1.25.7, 1.25.8, 1.25.9, 1.25.10, 1.25.11, 1.25.12, 1.25.13, 1.25.14, 1.25.15, 1.25.16, 1.26.0, 1.26.1, 1.26.2, 1.26.3, 1.26.4, 1.26.5, 1.26.6, 1.26.7, 1.26.8, 1.26.9, 1.26.10, 1.26.11, 1.26.12, 1.26.13, 1.27.0, 1.27.1, 1.27.2, 1.27.3, 1.27.4, 1.27.5, 1.27.6, 1.27.7, 1.27.8, 1.27.9, 1.27.10, 1.28.0, 1.28.1, 1.28.2, 1.28.3, 1.28.4, 1.28.5, 1.28.6, 1.29.0, 1.29.1