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

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.

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