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ESA-2015-164: EMC Isilon OneFS Privilege Escalation Vulnerability

EMC Identifier: ESA-2015-164

CVE Identifier: CVE-2015-6848

Severity Rating: CVSS v2 Base Score: 8.5 (AV:N/AC:M/Au:S/C:C/I:C/A:C)

Affected products:

•	EMC Isilon OneFS 7.2.1.0
•	EMC Isilon OneFS 7.2.0.0 - 7.2.0.2
•	EMC Isilon OneFS 7.1.1.0 - 7.1.1.4
•	EMC Isilon OneFS 7.1.0.x  

Summary:  
EMC Isilon OneFS is affected by a privilege escalation vulnerability that may potentially be exploited by attackers to compromise the affected system. 

Details:  
EMC Isilon OneFS is affected by a privilege escalation vulnerability. The vulnerability may grant Active Directory (AD) users in trusted domains root-level access to EMC Isilon clusters if RFC 2307 is enabled on the cluster, and if Windows Services for UNIX (SFU) is not configured on the trusted domain.

Resolution:  
The following versions of EMC Isilon OneFS resolve this vulnerability:
•	EMC Isilon OneFS 7.2.1.1
•	EMC Isilon OneFS 7.2.0.3
•	EMC Isilon OneFS 7.1.1.5
EMC strongly recommends that all customers upgrade to a version containing the resolution at the earliest opportunity.
Workaround:

If upgrading is not an option, customers can perform the following workaround:

Do not enable RFC 2307 for AD authentication on your cluster unless your domain and all trusted domains have SFU enabled and configured for all domain users.


Link to remedies:

Registered EMC Online Support customers can download OneFS installation files from the Downloads for Isilon OneFS page of the EMC Online Support site at https://support.emc.com/downloads/15209_Isilon-OneFS. 

If you have any questions, please contact EMC Support.



Read and use the information in this EMC Security Advisory to assist in avoiding any situation that might arise from the problems described herein. If you have any questions regarding this product alert, contact EMC Software Technical Support at 1-877-534-2867.

For an explanation of Severity Ratings, refer to EMC Knowledgebase solution emc218831. EMC recommends all customers take into account both the base score and any relevant temporal and environmental scores which may impact the potential severity associated with particular security vulnerability.

EMC Corporation distributes EMC Security Advisories, in order to bring to the attention of users of the affected EMC products, important security information. EMC recommends that all users determine the applicability of this information to their individual situations and take appropriate action. The information set forth herein is provided "as is" without warranty of any kind. EMC disclaims all warranties, either express or implied, including the warranties of merchantability, fitness for a particular purpose, title and non-infringement. In no event, shall EMC or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if EMC or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation may not apply.

EMC Product Security Response Center
security_alert@emc.com
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