Bug 1219058 – CVE-2015-3629 docker: symlink traversal on container respawn allows local privilege escalation

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Bug 1219058 - (CVE-2015-3629) CVE-2015-3629 docker: symlink traversal on container respawn allows local privilege escalation

Summary:	CVE-2015-3629 docker: symlink traversal on container respawn allows local pri...

Status:	NEW

Aliases:	CVE-2015-3629

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

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

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

Depends On:	1219701 1219702 1219703 1219704
Blocks:	1219067
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Reported:	2015-05-06 09:58 EDT by Martin Prpič
Modified:	2015-11-25 05:32 EST (History)
CC List:	17 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 09:58:55 EDT

The following flaw was reported in Docker:

Libcontainer version 1.6.0 introduced changes which facilitated a mount namespace breakout upon respawn of a container. This allowed malicious images to write files to the host system and escape containerization.

Libcontainer and 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 21:33:37 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 21:45:21 EDT

Created docker-io tracking bugs for this issue:

Affects: fedora-all [bug 1219703]
Affects: epel-6 [bug 1219704]

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