Privilege Escalation Affecting k8s.io/apimachinery/pkg/util/proxy package, versions <0.15.7>=1.7.6 <1.14.0-alpha.1


Severity

Recommended
0.0
critical
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Mature
EPSS
34.58% (98th percentile)

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  • Snyk IDSNYK-GOLANG-K8SIOAPIMACHINERYPKGUTILPROXY-174797
  • published10 Dec 2018
  • disclosed5 Dec 2018
  • creditJordan Liggitt

Introduced: 5 Dec 2018

CVE-2018-1002105  (opens in a new tab)
CWE-269  (opens in a new tab)

How to fix?

Upgrade k8s.io/apimachinery/pkg/util/proxy to version 0.15.7, 1.14.0-alpha.1 or higher.

Overview

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.

CVSS Scores

version 3.1