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ESB-2015.3230 - [Virtual] EMC VPLEX: Root compromise - Existing account

Date: 23 December 2015

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             AUSCERT External Security Bulletin Redistribution

               EMC VPLEX Undocumented Account Vulnerability
                             23 December 2015


        AusCERT Security Bulletin Summary

Product:          EMC VPLEX
Publisher:        EMC
Operating System: Virtualisation
Impact/Access:    Root Compromise -- Existing Account
Resolution:       Patch/Upgrade
CVE Names:        CVE-2015-6850  

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ESA-2015-174: EMC VPLEX Undocumented Account Vulnerability

EMC Identifier: ESA-2015-174

CVE Identifier: CVE-2015-6850

Severity Rating: CVSS Base Score 6.8 (AV:L/AC:L/Au:S/C:C/I:C/A:C)

Affected Products

EMC Software: EMC VPLEX GeoSynchrony 5. 4 SP1 P2 and earlier

EMC Software: EMC VPLEX GeoSynchrony 5.5


EMC VPLEX GeoSynchrony code level 5.5 and earlier contains an undocumented 
account that may potentially be utilized by malicious VPLEX users to gain 
unauthorized access to the system.


EMC VPLEX enables the root account that was found to be undocumented and 
protected with default password. The users are prevented from logging into 
VPLEX directly as root. However, any VPLEX user who is already logged in can 
elevate his/her privilege to root with knowledge of the default password.

Note: "Root" account is not required for normal operations of the product. 
Service account is the only authorized account to get the root privilege for 
the purpose of functionality and maintaining the product.


EMC updated product documentation to include information about the "root" 
account and how to change its default password. The following steps need to be
performed to resolve this issue:

Upgrade the VPLEX GeoSynchrony to versions 5.4 SP1 P3 or 5.5 Patch 1.

Once you have upgraded to 5.4 SP1 P3 or 5.5 Patch 1, customers must follow the
instructions in the KB Article 211258 (, How
to change default password for EMC VPLEX root account, to change default 
"root" password.

Note: VS1 customers cannot upgrade to 5.5 Patch 1, since only VS2 hardware is
capable of running 5.5 Patch 1. VS1 customers must upgrade to 5.4 SP1 P3, and
VS2 customers can go to either 5.4 SP1 P3, or 5.5 Patch 1.

Given the elevated permissions granted to the service account, its default 
password must be also changed (if not done already) in order to better protect
VPLEX from misuse or abuse of those privileges. Refer to EMC VPLEX Security 
Configuration Guide ( for more information.

EMC recommends that all customers upgrade to one of the above listed versions
at their earliest opportunity and change all default passwords to fully 
mitigate the risk.

Link To Remedies

Customers must follow KB 211258, How to change default password for EMC VPLEX
root account, and can download the script mentioned in the KB from EMC's 
On-Line 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

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