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ESB-2014.0920 - [Cisco] Cisco Wireless LAN Controller: Denial of service - Remote/unauthenticated

Date: 10 June 2014

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.0920
          Cisco Wireless LAN Controller Cisco Discovery Protocol
                      Denial of Service Vulnerability
                               10 June 2014

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

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

Product:           Cisco Wireless LAN Controller
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-3291  

Original Bulletin: 
   http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3291

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

Cisco Security Notice

Cisco Wireless LAN Controller Cisco Discovery Protocol Denial of Service 
Vulnerability

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3291

CVE ID: CVE-2014-3291

Release Date: 2014 June 6 17:54 UTC (GMT)

Last Updated: 2014 June 9 20:43 UTC (GMT)

Related Documents:

Summary

A vulnerability in the Cisco Discovery Protocol subsystem of Cisco Wireless 
LAN Controllers could allow an unauthenticated, adjacent attacker to cause a 
denial of service (DoS) condition.

The vulnerability is due to a failure to properly check for certain NULL 
values present in a Cisco Discovery Protocol packet. An attacker could exploit
this vulnerability by submitting crafted Cisco Discovery Protocol requests to
an affected device. The attacker would then need to convince a user to perform
a Simple Network Management Protocol (SNMP) poll of the affected MIB. An 
attacker that can convince a user to perform an SNMP poll of the affected MIB
could trigger a NULL pointer error that results in a restart of the device.

Affected Products

Product 				More Information 	CVSS

Cisco Wireless LAN Controller (WLC) 	CSCuo12321 		5.7/4.7

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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