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Privilege Escalation Affecting github.com/kubernetes/kubernetes/staging/src/k8s.io/apimachinery/pkg/util/proxy Open this link in a new tab package, versions <1.10.11 >=1.11.0 <1.11.5 >=1.12.0 <1.12.3

0.0
critical

  • Exploit Maturity

    Proof of concept

  • Attack Complexity

    Low

  • Confidentiality

    High

  • Integrity

    High

  • Availability

    High

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  • snyk-id

    SNYK-GOLANG-GITHUBCOMKUBERNETESKUBERNETESSTAGINGSRCK8SIOAPIMACHINERYPKGUTILPROXY-72666

  • published

    10 Dec 2018

  • disclosed

    5 Dec 2018

  • credit

    Jordan Liggitt

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Introduced: 5 Dec 2018

CVE-2018-1002105 Open this link in a new tab
CWE-269 Open this link in a new tab

How to fix?

Upgrade github.com/kubernetes/kubernetes/staging/src/k8s.io/apimachinery/pkg/util/proxy to version 1.10.11, 1.11.5, 1.12.3 or higher.

Overview

github.com/kubernetes/kubernetes/staging/src/k8s.io/apimachinery/pkg/util/proxy is a package that provides transport and upgrade support for proxies.

Affected versions of this package are vulnerable to Privilege Escalation. 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.