Bug 1796107 (CVE-2019-19921) - CVE-2019-19921 runc: volume mount race condition with shared mounts leads to information leak/integrity manipulation
Summary: CVE-2019-19921 runc: volume mount race condition with shared mounts leads to ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-19921
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: 1796109 1796110 1796112 1801886 1801887 1801888 1802599 1803100 1804040 1804041 1804042 1804043 1890047 1890048 1890050 1890052
Blocks: 1796113
TreeView+ depends on / blocked
 
Reported: 2020-01-29 16:01 UTC by Marian Rehak
Modified: 2021-12-22 06:23 UTC (History)
38 users (show)

Fixed In Version: runc 1.0.0-rc10
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in runc. An attacker who controls the container image for two containers that share a volume can race volume mounts during container initialization, by adding a symlink to the rootfs that points to a directory on the volume. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Clone Of:
Environment:
Last Closed: 2020-03-10 16:31:56 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:0688 0 None None None 2020-03-10 12:21:27 UTC
Red Hat Product Errata RHSA-2020:0695 0 None None None 2020-03-12 21:18:05 UTC
Red Hat Product Errata RHSA-2020:0942 0 None None None 2020-03-23 13:52:27 UTC
Red Hat Product Errata RHSA-2020:1485 0 None None None 2020-04-20 17:21:36 UTC
Red Hat Product Errata RHSA-2020:1650 0 None None None 2020-04-28 15:36:48 UTC

Description Marian Rehak 2020-01-29 16:01:52 UTC 
An attacker who controls the container image for two containers that share a volume can race volume mounts during container initialization, by adding a symlink to the rootfs that points to a directory on the volume.

Upstream Issue:

https://github.com/opencontainers/runc/issues/2197
Comment 1 Marian Rehak 2020-01-29 16:03:01 UTC 
Created docker tracking bugs for this issue:

Affects: fedora-all [bug 1796110]
Affects: openstack-rdo [bug 1796112]


Created runc tracking bugs for this issue:

Affects: fedora-all [bug 1796109]
Comment 3 Marco Benatto 2020-02-11 20:19:36 UTC 
Upstream commit for this issue:
https://github.com/opencontainers/runc/pull/2207/commits/3291d66b98445bd7f7d02eac7f2bca2ac2c56942
Comment 5 Daniel Walsh 2020-02-11 20:37:19 UTC 
Jindrich can you get an update out for this?
Comment 11 errata-xmlrpc 2020-03-10 12:21:24 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.2

Via RHSA-2020:0688 https://access.redhat.com/errata/RHSA-2020:0688
Comment 12 Product Security DevOps Team 2020-03-10 16:31:56 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-2019-19921
Comment 13 errata-xmlrpc 2020-03-12 21:18:03 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.1

Via RHSA-2020:0695 https://access.redhat.com/errata/RHSA-2020:0695
Comment 15 errata-xmlrpc 2020-03-23 13:52:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extras

Via RHSA-2020:0942 https://access.redhat.com/errata/RHSA-2020:0942
Comment 16 errata-xmlrpc 2020-04-20 17:21:34 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.3

Via RHSA-2020:1485 https://access.redhat.com/errata/RHSA-2020:1485
Comment 17 errata-xmlrpc 2020-04-28 15:36:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:1650 https://access.redhat.com/errata/RHSA-2020:1650
Note You need to log in before you can comment on or make changes to this bug.