Cisco Unified IP Phones 9900 Series Firmware: Denial of Service -- Remote/Unauthenticated

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.0038
    Cisco 9900 Series IP Phone Crafted Header Unregister Vulnerability
                              13 January 2014

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

Product:           Cisco Unified IP Phones 9900 Series Firmware
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-0658  

Original Bulletin: 
   http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-0658

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Cisco Security Notice

Cisco 9900 Series IP Phone Crafted Header Unregister Vulnerability

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-0658

CVE ID: CVE-2014-0658

Release Date: 2014 January 10 14:11 UTC (GMT)

Last Updated: 2014 January 10 21:18 UTC (GMT)

Related Documents:

Summary

A vulnerability in Session Initiation Protocol (SIP) header processing of 
Cisco fourth-generation IP phones could allow an unauthenticated, remote 
attacker to cause the IP phone to unregister.

The vulnerability is due to improper SIP header processing. An attacker could
exploit this vulnerability by sending a crafted SIP header to the affected 
phone. An exploit could allow the attacker to force the IP phone to 
unregister.

Affected Products

Product 					More Information 	CVSS

Cisco Unified IP Phones 9900 Series Firmware 	CSCul24898 		5.4/4.7

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

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