Cisco Nexus 9000 Series: Unauthorised Access -- Remote/Unauthenticated

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.1330
     Cisco Nexus 9000 Series Switches Access List Bypass Vulnerability
                               7 August 2014

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

Product:           Cisco Nexus 9000 Series
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Unauthorised Access -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-3330  

Original Bulletin: 
   http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3330

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Cisco Security Notice

Cisco Nexus 9000 Series Switches Access List Bypass Vulnerability

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3330

CVE ID: CVE-2014-3330

Release Date: 2014 August 5 21:46 UTC (GMT)

Last Updated: 2014 August 6 18:54 UTC (GMT)

Related Documents:

Summary

A vulnerability in the implementation of the access list logging feature of 
Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote 
attacker to bypass the access list restriction for the logged traffic.

The vulnerability is due to insufficient policy checks for the logged packets.
An attacker could exploit this vulnerability by sending a flood of denied 
packets that match an access list entry with the log keyword. An exploit could
allow the attacker to bypass the access control list for a small percentage of
the packets, which would otherwise have been dropped.

Affected Products

Product 		More Information 	CVSS

Cisco NX-OS Software 	CSCuo02489 		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.

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