Bug 1384112 – CVE-2016-7075 OpenShift 3: API server does not validate client-provided intermediate certificates correctly

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Bug 1384112 - (CVE-2016-7075) CVE-2016-7075 OpenShift 3: API server does not validate client-provided intermediate certificates correctly

Summary:	CVE-2016-7075 OpenShift 3: API server does not validate client-provided inter...

Status:	NEW

Aliases:	CVE-2016-7075

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	high Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=important,public=20161010,repo...
Keywords:	Security

Depends On:	1384120
Blocks:	1384165
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Reported:	2016-10-12 11:06 EDT by Kurt Seifried
Modified:	2018-08-31 17:38 EDT (History)
CC List:	14 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:	It was found that Kubernetes did not correctly validate X.509 client intermediate certificate host name fields. An attacker could use this flaw to bypass authentication requirements by using a specially crafted X.509 certificate.
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Last Closed:
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:2064	normal	SHIPPED_LIVE	Important: atomic-openshift security update	2016-10-17 17:24:45 EDT

Groups: None (edit)

Description Kurt Seifried 2016-10-12 11:06:37 EDT

Upstream reports:
Clients using SSL certs for auth show the subject CN of their intermediate cert
not their entity cert.

Reference URL:
https://github.com/kubernetes/kubernetes/issues/34517

Comment 3 errata-xmlrpc 2016-10-17 13:25:21 EDT

This issue has been addressed in the following products:

  Red Hat OpenShift Enterprise 3.1
  Red Hat OpenShift Enterprise 3.2
  Red Hat OpenShift Container Platform 3.3

Via RHSA-2016:2064 https://access.redhat.com/errata/RHSA-2016:2064

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