Bug 1172782 (CVE-2014-9357)

Summary:	CVE-2014-9357 docker: Escalation of privileges during decompression of LZMA archives
Product:	[Other] Security Response	Reporter:	Trevor Jay <tjay>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	adimania, admiller, dwalsh, golang-updates, hushan.jia, jburrell, jchaloup, jperrin, lsu, mattdm, mgoldman, miminar, security-response-team, s, thrcka, vbatts
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	docker 1.3.3	Doc Type:	Bug Fix
Doc Text:	A flaw was found in the way the Docker service unpacked images or builds after a "docker pull". An attacker could use this flaw to provide a malicious image or build that, when unpacked, would escalate their privileges on the system.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-03-06 21:50:01 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1173324, 1173325, 1179293, 1179294
Bug Blocks:	1198578

Description Trevor Jay 2014-12-10 17:51:17 UTC

Docker Inc. has discovered an issue whereby a malicious image could execute arbitrary code when being unpacked automatically after a "docker pull". From the Docker Inc report:

"It has been discovered that the introduction of chroot for archive extraction in Docker 1.3.2 had introduced a privilege escalation vulnerability. Malicious images or builds from malicious Dockerfiles could escalate privileges and execute arbitrary code as a root user on the Docker host by providing a malicious ‘xz’ binary.

We are releasing Docker 1.3.3 to address this vulnerability. Only Docker 1.3.2 is vulnerable. Users are highly encouraged to upgrade."

Comment 1 Trevor Jay 2014-12-10 17:51:57 UTC

Statement:

This issue affects the versions of Docker as shipped with Red Hat Enterprise Linux 7. However, this flaw is not known to be exploitable under any supported scenario. A future update may address this issue.

Red Hat does not support or recommend running untrusted images.

Comment 2 Vincent Danen 2014-12-11 20:51:27 UTC

External References:

https://groups.google.com/forum/#!topic/docker-user/nFAz-B-n4Bw

Comment 3 Vincent Danen 2014-12-11 21:01:17 UTC

Created docker-io tracking bugs for this issue:

Affects: fedora-all [bug 1173324]
Affects: epel-6 [bug 1173325]

Comment 4 Trevor Jay 2014-12-12 02:00:09 UTC

Acknowledgements:

Red Hat would like to thank Docker Inc. for reporting this issue.

Comment 5 Fedora Update System 2014-12-15 04:32:43 UTC

docker-io-1.4.0-1.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2015-01-26 02:35:28 UTC

docker-io-1.4.1-6.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 8 Fedora Update System 2015-01-31 16:53:21 UTC

docker-io-1.4.1-3.el6 has been pushed to the Fedora EPEL 6 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 11 errata-xmlrpc 2015-03-05 03:19:10 UTC

This issue has been addressed in the following products:

  RHEL Extras for RHEL-7

Via RHSA-2015:0623 https://rhn.redhat.com/errata/RHSA-2015-0623.html