Bug 1431557 (CVE-2017-5985)

Summary:	CVE-2017-5985 lxc: lxc-user-nic didn't verify network namespace ownership
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	karlthered, sagarun, thomas.moschny
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-21 11:52:03 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:	1431558, 1431559
Bug Blocks:

Description Andrej Nemec 2017-03-13 09:44:02 UTC

It was found that lxc-user-nic could potentially have been tricked into operating on a network namespace over which the caller did not hold privilege.

References:

http://seclists.org/oss-sec/2017/q1/576
https://lists.linuxcontainers.org/pipermail/lxc-users/2017-March/012925.html

Upstream bug:

https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1654676

Upstream patch:

https://github.com/lxc/lxc/commit/16af238036a5464ae8f2420ed3af214f0de875f9

Comment 1 Andrej Nemec 2017-03-13 09:44:53 UTC

Created lxc tracking bugs for this issue:

Affects: epel-6 [bug 1431559]
Affects: epel-7 [bug 1431558]

Comment 2 Fedora Update System 2017-07-30 19:46:45 UTC

lxc-1.0.10-2.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 3 Fedora Update System 2017-07-30 19:50:23 UTC

lxc-1.0.10-2.el7 has been pushed to the Fedora EPEL 7 stable repository. If problems still persist, please make note of it in this bug report.