Bug 1219061 – CVE-2015-3627 docker: insecure opening of file-descriptor 1 leading to privilege escalation

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Bug 1219061 - (CVE-2015-3627) CVE-2015-3627 docker: insecure opening of file-descriptor 1 leading to privilege escalation

Summary:	CVE-2015-3627 docker: insecure opening of file-descriptor 1 leading to privil...

Status:	NEW

Aliases:	CVE-2015-3627

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

Depends On:	1219705 1219706 1219707 1219708
Blocks:	1219067
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Reported:	2015-05-06 10:01 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 10:01:27 EDT

The following flaw was reported in Docker:

The file-descriptor passed by libcontainer to the pid-1 process of a container has been found to be opened prior to performing the chroot, allowing insecure open and symlink traversal. This allows malicious container images to trigger a local privilege escalation.

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 21:33:38 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 21:46:37 EDT

Created docker-io tracking bugs for this issue:

Affects: fedora-all [bug 1219707]
Affects: epel-6 [bug 1219708]

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