Bug 1040786 (CVE-2013-7048)

Summary:	CVE-2013-7048 Openstack Nova: insecure directory permissions in snapshots
Product:	[Other] Security Response	Reporter:	Ratul Gupta <ratulg>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	akscram, alexander.sakhnov, aortega, apevec, apevec, ayoung, bfilippov, breu, chrisw, d.busby, gkotton, gmollett, iheim, itamar, Jan.van.Eldik, jonathansteffan, jose.castro.leon, kseifried, lhh, lpeer, markmc, mlvov, mmagr, mmcallis, ndipanov, p, rbryant, rhos-maint, sclewis, sdake, security-response-team, sradvan, yeylon
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-07-15 07:10:11 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:	1040788, 1040789, 1063634, 1063636, 1063637
Bug Blocks:	1023240, 1040792

Description Ratul Gupta 2013-12-12 06:25:49 UTC

A vulnerability was discovered in OpenStack Nova, where the directories used to temporarily store live snapshots on Nova compute nodes were writeable to all local users. 

The issue has said to be surfaced due to a previous fix (https://review.openstack.org/gitweb?p=openstack%2Fnova.git;a=commitdiff;h=46de2d1e2d0abd6fdcd4da13facaf3225c721f5e), where the temporary directory was given 777 permissions, which could allow every user on the whole system to write there. A local attacker with shell access on compute nodes could therefore read and modify the contents of live snapshots before those are uploaded to the image service.

References:
http://seclists.org/oss-sec/2013/q4/474
https://bugs.launchpad.net/nova/+bug/1227027

Comment 1 Ratul Gupta 2013-12-12 06:27:12 UTC

Created openstack-nova tracking bugs for this issue:

Affects: fedora-all [bug 1040788]
Affects: epel-6 [bug 1040789]

Comment 2 Kurt Seifried 2014-01-13 19:36:27 UTC

Fix information:

Icehouse (development branch) fix:
https://review.openstack.org/#/c/58852/

Havana fix:
https://review.openstack.org/#/c/60548/

Grizzly fix:
https://review.openstack.org/#/c/60550/

Comment 5 Murray McAllister 2014-02-14 08:09:42 UTC

Salvatore Bonaccorso noted in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=732022 "From https://wiki.openstack.org/wiki/ReleaseNotes/2013.2.2 and looking at nova/virt/libvirt/driver.py this looks it is fixed only in 2013.2.2."

Is that a concern for anything Red Hat ships?

Comment 8 Fedora Update System 2014-02-25 07:52:55 UTC

openstack-nova-2013.2.2-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 9 errata-xmlrpc 2014-03-04 19:04:21 UTC

This issue has been addressed in following products:

  OpenStack 4 for RHEL 6

Via RHSA-2014:0231 https://rhn.redhat.com/errata/RHSA-2014-0231.html

Comment 10 Fedora Update System 2014-04-02 09:14:19 UTC

openstack-nova-2013.1.5-1.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 11 errata-xmlrpc 2014-04-03 20:20:47 UTC

This issue has been addressed in following products:

  OpenStack 3 for RHEL 6

Via RHSA-2014:0366 https://rhn.redhat.com/errata/RHSA-2014-0366.html