---
id: CVE-2018-1002105
aliases:
  - GHSA-579h-mv94-g4gp
  - GO-2022-0792
title: Privilege Escalation in Kubernetes
summary: Privilege Escalation in Kubernetes
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: kubernetes
product: github.com/kubernetes/kubernetes
ecosystem: go
affected:
  - github.com/kubernetes/kubernetes < 1.10.11
  - 'github.com/kubernetes/kubernetes >= 1.11.0, < 1.11.5'
  - 'github.com/kubernetes/kubernetes >= 1.12.0, < 1.12.3'
patched:
  - github.com/kubernetes/kubernetes 1.10.11
  - github.com/kubernetes/kubernetes 1.11.5
  - github.com/kubernetes/kubernetes 1.12.3
published: '2022-02-15'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:49:11.537608207Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-579h-mv94-g4gp'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2018-1002105'
  - url: 'https://github.com/kubernetes/kubernetes/issues/71411'
  - url: >-
      https://github.com/kubernetes/kubernetes/commit/2257c1ecbe3c0cf71dd50b82752ae189c94ec905
  - url: 'https://www.securityfocus.com/bid/106068'
  - url: 'https://www.openwall.com/lists/oss-security/2019/07/06/4'
  - url: 'https://www.openwall.com/lists/oss-security/2019/07/06/3'
  - url: 'https://www.openwall.com/lists/oss-security/2019/06/28/2'
  - url: 'https://www.exploit-db.com/exploits/46053'
  - url: 'https://www.exploit-db.com/exploits/46052'
  - url: >-
      https://www.coalfire.com/The-Coalfire-Blog/December-2018/Kubernetes-Vulnerability-What-You-Can-Should-Do
  - url: 'https://security.netapp.com/advisory/ntap-20190416-0001'
  - url: >-
      https://lists.opensuse.org/opensuse-security-announce/2020-04/msg00041.html
  - url: 'https://groups.google.com/forum/#!topic/kubernetes-announce/GVllWCg6L88'
  - url: 'https://github.com/evict/poc_CVE-2018-1002105'
  - url: 'https://access.redhat.com/errata/RHSA-2018:3754'
  - url: 'https://access.redhat.com/errata/RHSA-2018:3752'
  - url: 'https://access.redhat.com/errata/RHSA-2018:3742'
  - url: 'https://access.redhat.com/errata/RHSA-2018:3624'
  - url: 'https://access.redhat.com/errata/RHSA-2018:3598'
  - url: 'https://access.redhat.com/errata/RHSA-2018:3551'
  - url: 'https://access.redhat.com/errata/RHSA-2018:3549'
  - url: 'https://access.redhat.com/errata/RHSA-2018:3537'
tags:
  - osv
  - go
  - exploit-available
epss: 0.86978
epssPercentile: 0.99739
exploits:
  exploitdb: true
  github: 5
  githubRepos:
    - 'https://github.com/gravitational/cve-2018-1002105'
    - 'https://github.com/evict/poc_CVE-2018-1002105'
    - 'https://github.com/imlzw/Kubernetes-1.12.3-all-auto-install'
  checkedAt: '2026-09-23T07:13:21.464Z'
exploitAvailable: true
ingestedAt: '2026-09-12T03:13:01.755Z'
---

## Overview

In all Kubernetes versions prior to v1.10.11, v1.11.5, and v1.12.3, incorrect handling of error responses to proxied upgrade requests in the kube-apiserver allowed specially crafted requests to establish a connection through the Kubernetes API server to backend servers, then send arbitrary requests over the same connection directly to the backend, authenticated with the Kubernetes API server's TLS credentials used to establish the backend connection.

## Affected packages

- `github.com/kubernetes/kubernetes < 1.10.11`
- `github.com/kubernetes/kubernetes >= 1.11.0, < 1.11.5`
- `github.com/kubernetes/kubernetes >= 1.12.0, < 1.12.3`

## Remediation

Upgrade to a patched release:

- `github.com/kubernetes/kubernetes 1.10.11`
- `github.com/kubernetes/kubernetes 1.11.5`
- `github.com/kubernetes/kubernetes 1.12.3`