Bug 1721704 (CVE-2019-11246) - CVE-2019-11246 kubernetes: Incomplete fix for CVE-2019-1002101 allows for arbitrary file write via `kubectl cp`
Summary: CVE-2019-11246 kubernetes: Incomplete fix for CVE-2019-1002101 allows for arb...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-11246
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1721756 1721757 1721758 1721759 1721773 1722682 1722683 1722684 1722824
Blocks: 1721706
TreeView+ depends on / blocked
 
Reported: 2019-06-18 22:14 UTC by Sam Fowler
Modified: 2021-02-16 21:49 UTC (History)
35 users (show)

Fixed In Version: kubernetes 1.12.9, kubernetes 1.13.6, kubernetes 1.14.2
Clone Of:
Environment:
Last Closed: 2019-07-12 13:07:50 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:1632 0 None None None 2019-06-27 16:58:44 UTC
Red Hat Product Errata RHSA-2019:1633 0 None None None 2019-06-27 18:16:54 UTC
Red Hat Product Errata RHSA-2019:1852 0 None None None 2019-07-24 20:56:24 UTC

Description Sam Fowler 2019-06-18 22:14:38 UTC 
Another security issue was discovered with the Kubernetes `kubectl cp` command, before versions 1.12.9, 1.13.6 and 1.14.2, that could enable a directory traversal such that a malicious container could replace or create files on a user’s workstation. The vulnerability is a client-side defect and requires user interaction to be exploited.

The details for this vulnerability are very similar to CVE-2019-1002101. The original fix for that issue was incomplete and a new exploit method was discovered.


Upstream Fix:

https://github.com/kubernetes/kubernetes/pull/76788
Comment 1 Sam Fowler 2019-06-18 22:14:41 UTC 
Acknowledgments:

Name: the Kubernetes Product Security Committee
Upstream: Charles Holmes (Atredis Partners)
Comment 6 Sam Fowler 2019-06-21 01:00:49 UTC 
External Reference:

https://groups.google.com/forum/#!topic/kubernetes-dev/OxFMDVnqk60
Comment 7 Sam Fowler 2019-06-21 01:01:18 UTC 
Created kubernetes tracking bugs for this issue:

Affects: fedora-all [bug 1722684]


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

Affects: fedora-all [bug 1722682]


Created kubernetes:openshift-3.10/origin tracking bugs for this issue:

Affects: fedora-all [bug 1722683]
Comment 8 Hardik Vyas 2019-06-21 11:24:33 UTC 
In Gluster, kubernetes version embedded with heketi is older than 1.12.9. Filed trackers, this may end up WONTFIX as kubernetes is not used directly by Gluster.
Comment 10 errata-xmlrpc 2019-06-27 16:58:43 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 3.10

Via RHSA-2019:1632 https://access.redhat.com/errata/RHSA-2019:1632
Comment 11 errata-xmlrpc 2019-06-27 18:16:53 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 3.11

Via RHSA-2019:1633 https://access.redhat.com/errata/RHSA-2019:1633
Comment 12 Product Security DevOps Team 2019-07-12 13:07:50 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-2019-11246
Comment 13 errata-xmlrpc 2019-07-24 20:56:23 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 3.9

Via RHSA-2019:1852 https://access.redhat.com/errata/RHSA-2019:1852
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