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Fencer Vulns
low 2.6

CVE-2018-1002102 json

Kubernetes API server follows unvalidated redirects from streaming Kubelet endpoints

published 2019-12-05 6 y ago modified 2026-06-17 4 mo ago also EUVD-2018-2081

cvss
2.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

Summary

Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.

Patch / fix

  • Kubernetes Kubernetes v1.14.0
  • kubernetes Debian 14, Debian 13, Debian 12 1.17.4-1

debian advisories DEBIAN-CVE-2018-1002102

  • atomic-openshift openshift 3.11 3.11.346-1.git.0.ea10721.el7
  • atomic-openshift-pod openshift 3.11 3.11.346-1.git.0.ea10721.el7
  • atomic-openshift-node openshift 3.11 3.11.346-1.git.0.ea10721.el7
  • atomic-openshift-tests openshift 3.11 3.11.346-1.git.0.ea10721.el7
  • atomic-openshift-master openshift 3.11 3.11.346-1.git.0.ea10721.el7
  • atomic-openshift-clients openshift 3.11 3.11.346-1.git.0.ea10721.el7
  • atomic-openshift-sdn-ovs openshift 3.11 3.11.346-1.git.0.ea10721.el7
  • atomic-openshift-excluder openshift 3.11 3.11.346-1.git.0.ea10721.el7

red hat advisories RHSA-2020:5363

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-1002102 updated cvss 2.6

kubernetes: improper validation of URL redirection in the Kubernetes API server allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints

  • Red Hat OpenShift Container Platform 3.11 atomic-openshift 3.11.346-1.git.0.ea10721.el7, atomic-openshift-pod 3.11.346-1.git.0.ea10721.el7, atomic-openshift-node 3.11.346-1.git.0.ea10721.el7, atomic-openshift-tests 3.11.346-1.git.0.ea10721.el7, atomic-openshift-master 3.11.346-1.git.0.ea10721.el7, atomic-openshift-clients 3.11.346-1.git.0.ea10721.el7, +7 more
    fixed: vendor fix RHSA-2020:5363
  • Red Hat OpenShift Container Platform 3.11 prometheus 3.11.346-1.git.5026.2eafa83.el7, openshift-ansible 3.11.346-1.git.0.f65cc70.el7, openshift-kuryr 3.11.346-1.git.1478.b99caab.el7, openshift-ansible-test 3.11.346-1.git.0.f65cc70.el7, openshift-kuryr-cni 3.11.346-1.git.1478.b99caab.el7, openshift-ansible-roles 3.11.346-1.git.0.f65cc70.el7, +21 more Red Hat OpenShift Container Platform 4 openshift, openshift-clients, openshift-kubelet, openshift-hyperkube, openshift-kube-apiserver, openshift-kube-scheduler, +2 more Red Hat Storage 3 heketi, heketi-client, python-heketi
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.62% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.6 CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N
NVD 3.1 2.6 CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N
NVD 2.0 2.1 AV:N/AC:H/Au:S/C:P/I:N/A:N

Affected products

  • Kubernetes Kubernetes

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.