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Bug 1184716 - (CVE-2015-0237) CVE-2015-0237 vdsm: Users attempting a live storage migration create snapshot without snapshot creation permissions
CVE-2015-0237 vdsm: Users attempting a live storage migration create snapshot...
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
: ---
: ---
Assigned To: Red Hat Product Security
impact=moderate,public=20150204,repor...
: Reopened, Security
Depends On: 1188081 1188083
Blocks: 1184715 1189044
  Show dependency tree / graph
 
Reported: 2015-01-22 01:07 EST by Wade Mealing
Modified: 2015-04-30 10:44 EDT (History)
23 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
It was discovered that the permissions to allow or deny snapshot creation were ignored during live storage migration of a VM's disk between storage domains. An attacker able to live migrate a disk between storage domains could use this flaw to cause a denial of service.
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Clone Of:
Environment:
Last Closed: 2015-04-29 00:06:13 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2015:0888 normal SHIPPED_LIVE Moderate: Red Hat Enterprise Virtualization Manager 3.5.1 update 2015-04-28 18:40:04 EDT

  None (edit)
Description Wade Mealing 2015-01-22 01:07:26 EST 
Red Hat Enterprise Virtualization has an explicit permissions to allow or deny snapshot creation.  This permission is evaded and unchecked during live storage migration of a vm between hosts.

Long chains of snapshots may cause a performance degradation to the VM.  Effectively a user who can live migrate a host, could prevent the host from starting if migrated frequently.

Acknowledgements:

This issue was discovered by Red Hat Enterprise Visualization Engineering.
Comment 1 Wade Mealing 2015-01-26 19:00:43 EST 
kseifired supplied :CVE-2015-0237
Comment 2 Allon Mureinik 2015-01-28 10:04:48 EST 
(In reply to Wade Mealing from comment #0)
> This permission is evaded and unchecked during live
> migration of a vm between hosts.
This doesn't happen in live migration of VMs, but in live STORAGE migration of a virtual disk between storage domains.
Comment 7 Kurt Seifried 2015-03-17 01:55:17 EDT 
Statement:

This issue affects the versions of ovirt-engine-backend as shipped with Red Hat Enterprise Virtualization 3. Red Hat Product Security has rated this issue as having Moderate security impact. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Comment 13 errata-xmlrpc 2015-04-28 14:44:43 EDT 
This issue has been addressed in the following products:

  RHEV Manager version 3.5

Via RHSA-2015:0888 https://rhn.redhat.com/errata/RHSA-2015-0888.html
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