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ESB-2014.0681 - [Virtual][Cisco] Cisco Nexus 1000V: Reduced security - Remote/unauthenticated

Date: 07 May 2014

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.0681
        Cisco Nexus 1000V Access Control List Bypass Vulnerability
                                7 May 2014

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

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

Product:           Cisco Nexus 1000V
Publisher:         Cisco Systems
Operating System:  VMware ESX Server
                   Cisco
Impact/Access:     Reduced Security -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-0685  

Original Bulletin: 
   tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-0685

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

Cisco Security Notice

Cisco Nexus 1000V Access Control List Bypass Vulnerability

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-0685

CVE ID: CVE-2014-0685

Release Date: 2014 May 5 20:52  UTC (GMT)

Last Updated: 2014 May 6 19:14  UTC (GMT)

Related Documents:    

Summary

A vulnerability in Cisco Nexus 1000V switches could allow an unauthenticated, 
remote attacker to bypass deny statements in access control lists (ACLs) with
certain types of Internet Group Management Protocol version 2 (IGMPv2) or IGMP 
version 3 (IGMPv3) traffic. IGMP version 1 (IGMPv1) is not affected.

The vulnerability is due to a lack of IGMPv2 and IGMPv3 support in ACLs. An 
attacker could exploit this vulnerability by sending certain IGMPv2 or IGMPv3
requests to an affected switch.

Affected Products
Product					More Information	CVSS
Cisco Nexus 1000V InterCloud for VMware	CSCug61691		5.0/4.1

What Is a Cisco Security Notice?

The Cisco Product Security Incident Response Team (PSIRT) publishes Cisco 
Security Notices to inform customers of low- to mid-level severity security 
issues involving Cisco products.

Customers who wish to upgrade to a software version that includes fixes for 
these issues should contact their normal support channels. Free software 
updates will not be provided for issues that are disclosed through a Cisco 
Security Notice.

For additional information about Cisco PSIRT publications, see the Cisco 
Security Vulnerability Policy at 
http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html

Customers Using Third-Party Support Organizations

Customers may have Cisco products that are provided or maintained through prior 
or existing agreements with third-party support organizations, such as Cisco 
Partners, authorized resellers, or service providers. For these products,
customers should consult their service providers or support organizations to 
ensure that any applied workaround or fix is the most appropriate in the 
intended network before it is deployed.

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 stand-alone 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.

- --------------------------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
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                On call after hours for member emergencies only.
===========================================================================
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