Bug 1023581 (CVE-2013-4469)

Summary:	CVE-2013-4469 OpenStack Nova: Incomplete fix for CVE-2013-2096
Product:	[Other] Security Response	Reporter:	Kurt Seifried <kseifried>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aortega, apevec, ayoung, chrisw, gkotton, gmollett, iheim, lhh, markmc, ndipanov, rbryant, sclewis, security-response-team, 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 07:00:00 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:	1066777
Bug Blocks:	1023240

Description Kurt Seifried 2013-10-25 19:51:35 UTC

Thierry Carrez of the OpenStack project reports:

Title: Potential Nova denial of service through compressed disk images
Reporter: Pedraig Brady from Red Hat
Products: Nova
Affects: All versions

Description:
Pedraig Brady from Red Hat additionally discovered that OSSA 2013-012 did 
not fully address CVE-2013-2096 in the non-default case where
use_cow_images=False, and malicious qcow images are being transferred
from Glance. In that specific case, an authenticated user could still
consume large amounts of disk space for each instance using the
malicious image, potentially also resulting in a Denial of Service
attack on Nova compute nodes. The provided fixes address both issues.

This issue was CVE SPLIT, please see Bz1023239 for the patches for this issue.

Comment 2 Kurt Seifried 2013-11-27 07:48:41 UTC

Statement:

The Red Hat Security Response Team has rated this issue as having moderate security impact. This issue only affects systems that implemented the fix for  CVE-2013-2096 (Bz963462) which fails to completely address the problem. For  additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

Comment 3 Fedora Update System 2013-12-12 02:57:18 UTC

openstack-nova-2013.1.4-3.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 4 Fedora Update System 2013-12-14 03:44:27 UTC

openstack-nova-2013.2-4.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.