Bug 1486336 – CVE-2017-1000056 kubernetes: Privilege escalation in the PodSecurityPolicy admission plugin

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Bug 1486336 - (CVE-2017-1000056) CVE-2017-1000056 kubernetes: Privilege escalation in the PodSecurityPolicy admission plugin

Summary:	CVE-2017-1000056 kubernetes: Privilege escalation in the PodSecurityPolicy ad...

Status:	NEW

Aliases:	CVE-2017-1000056

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

Priority	medium Severity medium
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Assigned To:	Red Hat Product Security
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URL:
Whiteboard:	impact=moderate,public=20170301,repor...
Keywords:	Security

Depends On:	1486337 1486838 1516612 1516613
Blocks:	1486339
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Reported:	2017-08-29 09:49 EDT by Andrej Nemec
Modified:	2018-08-31 17:39 EDT (History)
CC List:	16 users (show)

See Also:
Fixed In Version:	kubernetes 1.5.5
Doc Type:	If docs needed, set a value
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Description Andrej Nemec 2017-08-29 09:49:49 EDT

Kubernetes is vulnerable to a privilege escalation in the PodSecurityPolicy admission plugin resulting in the ability to make use of any existing PodSecurityPolicy object.

Upstream patch:

https://github.com/kubernetes/kubernetes/commit/7fef0a4f6a44ea36f166c39fdade5324eff2dd5e

Upstream issue:

https://github.com/kubernetes/kubernetes/issues/43459

References:

https://snyk.io/vuln/SNYK-GOLANG-K8SIOKUBERNETES-50004

Comment 1 Andrej Nemec 2017-08-29 09:51:45 EDT

Created kubernetes tracking bugs for this issue:

Affects: fedora-25 [bug 1486337]

Comment 4 Mark Knowles 2017-11-23 01:26:06 EST

OpenShift isn't affected because we use Security Context Constraints (SCC) instead of Pod Security Policy (PSP).  PSP support is not imported from upstream.

This will only affect OpenShift if we start using PSP.  If that becomes the case, it would need to be imported from upstream (where it is fixed).

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