Bug 1219063 – CVE-2015-3630 docker: Read/write proc paths allow host modification & information disclosure

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Bug 1219063 - (CVE-2015-3630) CVE-2015-3630 docker: Read/write proc paths allow host modification & information disclosure

Summary:	CVE-2015-3630 docker: Read/write proc paths allow host modification & informa...

Status:	NEW

Aliases:	CVE-2015-3630

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:	1219709 1219710 1219711 1219712
Blocks:	1219067
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Reported:	2015-05-06 10:03 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
Doc Text:
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RHEL 7.3 requirements from Atomic Host:
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Description Martin Prpič 2015-05-06 10:03:28 EDT

The following flaw was reported in Docker:

Several paths underneath /proc were writable from containers, allowing global system manipulation and configuration. These paths included /proc/asound, /proc/timer_stats, /proc/latency_stats, and /proc/fs.

By allowing writes to /proc/fs, it has been noted that CIFS volumes could be forced into a protocol downgrade attack by a root user operating inside of a container. Machines having loaded the timer_stats module were vulnerable to having this mechanism enabled and consumed by a container.

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 21:33:40 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 21:47:56 EDT

Created docker-io tracking bugs for this issue:

Affects: fedora-all [bug 1219711]
Affects: epel-6 [bug 1219712]

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