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Kubernetes: CVE-2018-1002105: Proxy request handling in kube-apiserver can leave vulnerable TCP connections

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Kubernetes: CVE-2018-1002105: Proxy request handling in kube-apiserver can leave vulnerable TCP connections

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
12/04/2018
Created
03/19/2019
Added
12/04/2018
Modified
01/04/2019

Description

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.

Solution(s)

  • kubernetes-upgrade-1_10_11
  • kubernetes-upgrade-1_11_5
  • kubernetes-upgrade-1_12_3
  • kubernetes-upgrade-1_13_0-rc_1

References

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