Cisco Unified IP Phone 8945 contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. Updates are available.
A vulnerability in PNG image processing of the Cisco Unified IP Phone 8945 running software version 9.3(2) could allow an unauthenticated, remote attacker to cause the phone to lock up.
The vulnerability is due to incorrect processing of malformed PNG images. An attacker could exploit this vulnerability by placing a malicious PNG image on the HTTP Server from which the phone requests XML files. A successful exploit could allow the attacker to cause the phone to lock up.
Cisco has confirmed the vulnerability in a security notice and software updates are available.
At the time this alert was first published, Cisco Unified IP Phone 8945 running software version 9.3(2) is vulnerable. Later versions may also be vulnerable.
To exploit this vulnerability, it is likely that an attacker would need access to trusted, internal networks and access to the HTTP server on the network that serves resources to an affected device. These access requirements limits the likelihood of a successful exploit.
Cisco has released a security notice at the following link: CVE-2013-3468
Customers are advised to consult Cisco bug ID CSCud04270 for the most complete list of affected product versions.
An unauthenticated, remote attacker could exploit the vulnerability to cause an affected device to lock up and become unresponsive, resulting in a denial of service (DoS) condition.
The vulnerability is due to incorrect processing of malformed PNG images by an affected device.
An unauthenticated, remote attacker could exploit this vulnerability by placing a malicious PNG image on the HTTP Server from which an affected device requests XML files. A successful exploit could allow the attacker to cause the device to lock up, resulting in a DoS condition.
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 firstname.lastname@example.org for assistance.
The security vulnerability applies to the following combinations of products.
Cisco Unified IP Phone 8945
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