Bug 1784602 (CVE-2018-1002102)

Summary:	CVE-2018-1002102 kubernetes: improper validation of URL redirection in the Kubernetes API server allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	bmontgom, cscribne, dominik.mierzejewski, eparis, go-sig, hchiramm, hvyas, ichavero, jbrooks, jburrell, jcajka, jchaloup, jmulligan, jokerman, madam, nstielau, puebele, rhs-bugs, security-response-team, sisharma, sponnaga, storage-qa-internal, strigazi, tstclair
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kubernetes 1.14	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-12-16 16:18:35 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1804558, 1784603, 1784604, 1791520
Bug Blocks:	1784605

Description Guilherme de Almeida Suckevicz 2019-12-17 20:13:47 UTC

Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.

Reference:
https://github.com/kubernetes/kubernetes/issues/85867

Comment 1 Guilherme de Almeida Suckevicz 2019-12-17 20:14:06 UTC

Created kubernetes tracking bugs for this issue:

Affects: fedora-all [bug 1784603]


Created kubernetes:1.10/kubernetes tracking bugs for this issue:

Affects: fedora-all [bug 1784604]

Comment 2 Hardik Vyas 2019-12-31 13:01:52 UTC

Kubernetes is embedded in the version of heketi shipped with Red Hat Gluster Storage 3. However, it does not use Kubernetes API server part and only uses client side bits.

Comment 3 Sam Fowler 2020-01-16 02:03:36 UTC

Fixed in OpenShift 4.1.0:

https://github.com/openshift/origin/commit/efc7e25e7d1475b7c0c6caa74093cdad64d467e9

Comment 8 Sam Fowler 2020-07-09 00:46:55 UTC

Statement:

OpenShift Container Platform 4 is not affected by this flaw as it has included the upstream patch since version 4.1.0.

Comment 10 errata-xmlrpc 2020-12-16 12:35:03 UTC

This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 3.11

Via RHSA-2020:5363 https://access.redhat.com/errata/RHSA-2020:5363

Comment 11 Product Security DevOps Team 2020-12-16 16:18:35 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-1002102