Bug 1685213 (CVE-2019-1002101) - CVE-2019-1002101 kubernetes: Mishandling of symlinks allows for arbitrary file write via `kubectl cp`
Summary: CVE-2019-1002101 kubernetes: Mishandling of symlinks allows for arbitrary fil...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-1002101
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: 1686294 1686295 1687658 1687659 1693315 1693318 1693320 1693881 1693882 1693884 1693885
Blocks: 1685214
TreeView+ depends on / blocked
 
Reported: 2019-03-04 16:51 UTC by Andrej Nemec
Modified: 2021-10-27 03:26 UTC (History)
34 users (show)

Fixed In Version: kubernetes 1.11.9, kubernetes 1.12.7, kubernetes 1.13.5, kubernetes 1.14.0
Clone Of:
Environment:
Last Closed: 2021-10-27 03:26:19 UTC
Embargoed:

Attachments (Terms of Use)

Description Andrej Nemec 2019-03-04 16:51:27 UTC 
A potential symlink escape vulnerability was found in Kubernetes after 1.9.0-alpha. A compromised container could potentially be used to achieve code execution.

Introduced by:

https://github.com/kubernetes/kubernetes/commit/b1f85e2dfec6e64d8e1bc272251277df0058ab20
Comment 1 Andrej Nemec 2019-03-06 09:21:57 UTC 
Acknowledgments:

Name: Ariel Zelivansky (Twistlock)
Comment 5 Hardik Vyas 2019-03-08 09:38:33 UTC 
heketi-8.0.0 shipped with Gluster uses Kubernetes version v1.5.5 which is too old and the vulnerable code is not present which was introduced in v1.9.0-alpha.2.
Comment 7 Sam Fowler 2019-03-12 04:57:09 UTC 
Statement:

This issue affects Kubernetes starting from version 1.9. OpenShift Container Platform (OCP) versions 3.9 and later are also affected.

This issue did not affect the version of Kubernetes(embedded in heketi) shipped with Red Hat Gluster Storage 3 as it does not contain the vulnerable code.
Comment 10 Laura Pardo 2019-03-28 21:16:47 UTC 
Upstream Patch:
https://github.com/kubernetes/kubernetes/pull/75037
Comment 11 Laura Pardo 2019-03-28 21:16:50 UTC 
External References:

https://discuss.kubernetes.io/t/announce-security-release-of-kubernetes-kubectl-potential-directory-traversal-releases-1-11-9-1-12-7-1-13-5-and-1-14-0-cve-2019-1002101/5712
Comment 12 Laura Pardo 2019-03-28 21:17:49 UTC 
Created kubernetes tracking bugs for this issue:

Affects: fedora-all [bug 1693884]


Created kubernetes:1.1/kubernetes tracking bugs for this issue:

Affects: fedora-29 [bug 1693881]


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

Affects: fedora-29 [bug 1693882]


Created origin tracking bugs for this issue:

Affects: fedora-all [bug 1693885]
Note You need to log in before you can comment on or make changes to this bug.