A vulnerability in the web application interface of Cisco 9900 series IP phones could allow an unauthenticated, remote attacker to cause the webapp interface to become unavailable.
The vulnerability is due to insufficient input validation of certain fields. An attacker could exploit this vulnerability by overflowing certain input fields. This could allow the attacker to render the webapp interface of the Cisco 9900 series IP phone unavailable.
Cisco has confirmed the vulnerability in a security notice and released software updates.
To exploit this vulnerability, an attacker may need access to trusted, internal networks to submit crafted input to a targeted device. This access requirement limits the likelihood of a successful attack.
Customers are advised to consult Cisco bug ID CSCuh10343 for the most complete list of affected product versions.
Vulnerable ProductsAt the time this alert was first published, Cisco Unified IP Phones 9900 Series Firmware versions 9.3.2 SR1 and prior were vulnerable. Later releases of Cisco Unified IP Phones 9900 Series Firmware may also be vulnerable.
Products Confirmed Not VulnerableNo other Cisco products are currently known to be affected by these vulnerabilities.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to monitor affected systems.
Cisco customers with active contracts should contact their Cisco support team for assistance in upgrading to a software version that includes fixes for this vulnerability. Cisco customers without contracts may contact the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at email@example.com for assistance.
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.
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Version Description Section Status Date 1.0 Initial Release NA Final 2013-Oct-11
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