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: NEW
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: 1796110 1796112 1801887 1801888 1802599 1803100 1804040 1804041 1804042 1804043 1796109 1801886
Blocks: 1796113
TreeView+ depends on / blocked
 
Reported: 2020-01-29 16:01 UTC by Marian Rehak
Modified: 2020-02-20 10:18 UTC (History)
37 users (show)

Fixed In Version: runc 1.0.0-rc10
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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?


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