Bug 1848951 (CVE-2020-14316) - CVE-2020-14316 kubevirt: VMIs can be used to access host files
Summary: CVE-2020-14316 kubevirt: VMIs can be used to access host files
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-14316
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1850033 1852303
Blocks: 1848931
TreeView+ depends on / blocked
 
Reported: 2020-06-19 11:02 UTC by Stoyan Nikolov
Modified: 2021-02-16 19:50 UTC (History)
9 users (show)

Fixed In Version: kubevirt 0.30
Clone Of:
Environment:
Last Closed: 2020-07-28 19:28:03 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:3194 0 None None None 2020-07-28 19:07:34 UTC

Description Stoyan Nikolov 2020-06-19 11:02:12 UTC 
Virtual Machine Instances (VMIs) can be used to gain access to the host's filesystem.
Upstream fix: https://github.com/kubevirt/kubevirt/pull/3686
Comment 4 Stoyan Nikolov 2020-07-06 07:09:48 UTC 
Acknowledgments:

Name: Fabian Deutsch (Red Hat)
Comment 9 errata-xmlrpc 2020-07-28 19:07:32 UTC 
This issue has been addressed in the following products:

  RHEL-8-CNV-2.4
  RHEL-7-CNV-2.4

Via RHSA-2020:3194 https://access.redhat.com/errata/RHSA-2020:3194
Comment 10 Product Security DevOps Team 2020-07-28 19:28:03 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-2020-14316
Comment 15 Stoyan Nikolov 2020-07-30 08:03:25 UTC 
Mitigation:

This flaw can be partially or completely mitigated by leveraging existing mechanisms to restrict the VMI process such as running as non-root and using SELinux and sVirt whenever possible.
Comment 17 Stoyan Nikolov 2020-07-30 08:20:36 UTC 
Statement:

OpenShift Virtualization 1.4 and 2.3 use affected version of kubevirt in virt-launcher container, however impact is rated Moderate as VMIs are running as non-root and thus have limited access to the host's filesystem.
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