Bug 1219065 – CVE-2015-3631 docker: volume mounts allow LSM profile escalation

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Bug 1219065 - (CVE-2015-3631) CVE-2015-3631 docker: volume mounts allow LSM profile escalation

Summary:	CVE-2015-3631 docker: volume mounts allow LSM profile escalation

Status:	NEW

Aliases:	CVE-2015-3631

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
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Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20150507,repor...
Keywords:	Security

Depends On:	1219713 1219714 1219715 1219716
Blocks:	1219067
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Reported:	2015-05-06 10:05 EDT by Martin Prpič
Modified:	2016-01-21 07:19 EST (History)
CC List:	18 users (show)

See Also:
Fixed In Version:	docker 1.6.1
Doc Type:	Bug Fix
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RHEL 7.3 requirements from Atomic Host:
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Description Martin Prpič 2015-05-06 10:05:08 EDT

The following flaw was reported in Docker:

By allowing volumes to override files of /proc within a mount namespace, a user could specify arbitrary policies for Linux Security Modules, including setting an unconfined policy underneath AppArmor, or a docker_t policy for processes managed by SELinux. In all versions of Docker up until 1.6.1, it is possible for malicious images to configure volume mounts such that files of proc may be overridden.

Docker Engine 1.6.1 address this vulnerability.

Acknowledgements:

Red Hat would like to thank Eric Windisch of the Docker project for reporting this issue.

Comment 1 Trevor Jay 2015-05-07 21:33:42 EDT

This issue is exploitable by malicious Docker images. Red Hat supports images from it's own registry, ISV images certified by the Red Hat certification program, and images using qualified customer content.

Comment 3 Trevor Jay 2015-05-07 21:50:13 EDT

Created docker-io tracking bugs for this issue:

Affects: fedora-all [bug 1219715]
Affects: epel-6 [bug 1219716]

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