ESA-2017-027: EMC Isilon OneFS NFS Export Upgrade Vulnerability

[EMC Product Security Response Center <Security_Alert@xxxxxxx>]

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ESA-2017-027: EMC Isilon OneFS NFS Export Upgrade Vulnerability

EMC Identifier: ESA-2017-027 

CVE Identifier: CVE-2017-4979

Severity Rating: CVSS v3 Base Score: 7.1 (AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H)

Affected products:  The issue occurs in the following versions after an upgrade 
from OneFS 7.1.1.x or earlier: 

?       OneFS 8.0.1.0
?       OneFS 8.0.0.0 - 8.0.0.2
?       OneFS 7.2.1.0 - 7.2.1.3
?       OneFS 7.2.0.x

Summary:  EMC Isilon OneFS is affected by an NFS export vulnerability. Under 
certain conditions, after upgrading a cluster from OneFS 7.1.1.x or earlier, 
users may have unexpected levels of access to some NFS exports. 

Details:  
EMC Isilon OneFS is affected by the OneFS NFS Export Upgrade Vulnerability.  
Changing the default export permissions, after having created exports and then 
upgrading OneFS, can result in giving access to users that shouldn?t have it, 
or in prohibiting access to those that should have access.


Resolution:  
The following versions of EMC Isilon OneFS resolve this vulnerability:
?       EMC Isilon OneFS 8.0.1.1
?       EMC Isilon OneFS 8.0.0.3
?       EMC Isilon OneFS 7.2.1.4
If you cannot upgrade at this time, please see article 487758 for instructions 
to perform a workaround.  
Remediation:
If the issue has already occurred, you must manually fix each export file for 
which the settings were incorrectly overridden. If you need assistance, contact 
Isilon Technical Support.
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.


[The following is standard text included in all security advisories.  Please do 
not change or delete.]

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.



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