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ESB-2016.0464 - [Cisco] Cisco Nexus 2000 Series : Root compromise - Console/physical

Date: 24 February 2016

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0464
         Cisco Nexus 2000 Series Fabric Extender Software Default
                         Credential Vulnerability
                             24 February 2016

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco Nexus 2000 Series
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Root Compromise -- Console/Physical
Resolution:        None
CVE Names:         CVE-2016-1341  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160223-nx2000

- --------------------------BEGIN INCLUDED TEXT--------------------

Cisco Security Advisory

Cisco Nexus 2000 Series Fabric Extender Software Default Credential 
Vulnerability

Medium

Advisory ID:
cisco-sa-20160223-nx2000

Published:
2016 February 23 00:00  GMT
Version 1.0:
Final

CVSS Score:
Base - 6.9

Workarounds:
No workarounds available

Cisco Bug IDs:
CSCur22079
CVE-2016-1341
CWE-287

Summary

    A vulnerability in the Cisco Nexus 2000 Series Fabric Extender could allow
    an unauthenticated, local attacker to log in to the system shell with root
    user privileges.
     
    The vulnerability is due to a missing password for the root user account on
    the affected system. This account is created at installation and cannot be
    changed or deleted without impacting the functionality of the system. An 
    attacker could exploit this vulnerability by physically connecting to the 
    affected system. An exploit could allow the attacker to access the system
    with root user privileges.

    Cisco has not released software updates that address this vulnerability. 
    Workarounds that mitigate this vulnerability are not available.

    This advisory is available at the following link: 
    http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160223-nx2000

Affected Products

    Vulnerable Products
    Cisco Nexus 2000 Series Fabric Extenders are vulnerable.
    Products Confirmed Not Vulnerable
    No other Cisco products are currently known to be affected by this vulnerability.

Workarounds

    Workarounds are not available.

Fixed Software

    When considering software upgrades, customers are advised to consult the 
    Cisco Security Advisories and Responses archive at 
    http://www.cisco.com/go/psirt and review subsequent advisories to determine
    exposure and a complete upgrade solution.

    In all cases, customers should ensure that the devices to upgrade contain
    sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.
    If the information is not clear, customers are advised to contact the Cisco
    Technical Assistance Center (TAC) or their contracted maintenance 
    providers.

Exploitation and Public Announcements

    The Cisco Product Security Incident Response Team (PSIRT) is not aware of 
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.

URL

    http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160223-nx2000

Revision History

    Version 	Description 		Section 	Status 	Date
    1.0 	Initial public release 		 	Final 	2016-February-23

Legal Disclaimer

    THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND 
    OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR
    FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT
    OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES 
    THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.

    A standalone copy or paraphrase of the text of this document that omits the
    distribution URL is an uncontrolled copy and may lack important information
    or contain factual errors. The information in this document is intended for
    end users of Cisco products.

- --------------------------END INCLUDED TEXT--------------------

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
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