Bug 991630 (CVE-2013-4202)

Summary: CVE-2013-4202 OpenStack: Cinder Denial of Service using XML entities
Product: [Other] Security Response Reporter: Kurt Seifried <kseifried>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: abaron, aortega, apevec, ayoung, chrisw, dallan, eharney, gkotton, gmollett, markmc, 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: 2014-03-10 06:24:34 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: 991631, 995183, 995184, 995185, 995187    
Bug Blocks: 991632    
Attachments:
Description Flags
cinder-grizzly-CVE-2013-4202.patch
none
cinder-master-CVE-2013-4202.patch none

Description Kurt Seifried 2013-08-03 04:56:41 UTC 
Thierry	Carrez (thierry) reports:

Title: Denial of Service using XML entities in Nova/Cinder extensions
Reporter: Grant Murphy (Red Hat)
Products: Nova, Cinder
Affects: Grizzly and later

Description:
Grant Murphy from Red Hat reported that vulnerabilities in XML request
parsers were not fully patched in OSSA 2013-004. By leveraging XML
entity expansion in specific extensions, an unauthenticated attacker may
still consume excessive resources on the Nova or Cinder API servers,
resulting in a denial of service and potentially a crash. Only Nova
setups making use of the security group extension in Grizzly are
affected. Only Cinder setups making use of the backups or volume
transfer API extension in Grizzly are affected.

Proposed patches:
See attached patches. Unless a flaw is discovered in them, these patches
will be merged to Nova & Cinder master (havana) and stable/grizzly
branches on the public disclosure date.

Please note that this was originally assigned a	single CVE. It has since
been split into two CVE's (CVE-2013-4179 continues to be used for Nova and 
CVE-2013-4202 should be used for Cinder).
Comment 2 Kurt Seifried 2013-08-03 04:59:55 UTC 
Created attachment 782217 [details]
cinder-grizzly-CVE-2013-4202.patch
Comment 3 Kurt Seifried 2013-08-03 05:00:27 UTC 
Created attachment 782218 [details]
cinder-master-CVE-2013-4202.patch
Comment 6 Kurt Seifried 2013-08-08 17:45:29 UTC 
Created openstack-cinder tracking bugs for this issue:

Affects: fedora-all [bug 995183]
Affects: epel-6 [bug 995184]
Comment 7 Murray McAllister 2013-09-02 16:26:33 UTC 
Acknowledgements:

This issue was discovered by Grant Murphy of the Red Hat Product Security Team.
Comment 8 errata-xmlrpc 2013-09-03 20:23:28 UTC 
This issue has been addressed in following products:

  OpenStack 3 for RHEL 6

Via RHSA-2013:1198 https://rhn.redhat.com/errata/RHSA-2013-1198.html