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ESB-2015.2728 - [Virtual][Cisco] Cisco Unified Border Element (CUBE): Denial of service - Remote/unauthenticated

Date: 02 November 2015

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

                               ESB-2015.2728
       Cisco Unified Border Element Denial of Service Vulnerability
                              2 November 2015

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

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

Product:           Cisco Unified Border Element (CUBE)
Publisher:         Cisco Systems
Operating System:  Cisco
                   VMware ESX Server
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-6343  

Original Bulletin: 
   http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151026-cube

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

Cisco Security Advisory

Cisco Unified Border Element Denial of Service Vulnerability

Medium

Advisory ID: cisco-sa-20151026-cube

Published: 2015 October 26 10:00 GMT

Version 1.0: Final

CVSS Score:

Base - 5.0

Workarounds:

No workarounds available

Cisco Bug IDs:

CSCuv79202

CVE-2015-6343

CWE-399

Summary

A vulnerability in the Session Initiation Protocol (SIP) functionality of 
Cisco Unified Border Element (CUBE) could allow an unauthenticated, remote 
attacker to trigger a denial of service (DoS) condition.

The vulnerability is due to incorrect processing of SIP messages. An attacker
could exploit this vulnerability by sending unsupported SIP messages to a 
CUBE.

Cisco has 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-20151026-cube

Affected Products

Vulnerable Products

CUBE running Cisco IOS Software release 15.5(3)M is vulnerable.

Products Confirmed Not Vulnerable

No other Cisco products are currently known to be affected by this 
vulnerability.

Workarounds

There are no workarounds that mitigate this vulnerability.

Fixed Software

When considering software upgrades, customers are advised to consult the Cisco
Security Advisories and Notices 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-20151026-cube

Revision History

Version Description Section Status Date

1.0 Initial public release. Final 2015-October-26

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