Cisco Security Advisory
Cisco Unified IP Phone 8945 Crafted PNG Image Lockup Vulnerability
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AV:N/AC:H/Au:N/C:N/I:N/A:C/E:F/RL:OF/RC:C
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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.
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.
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Customers are advised to consult Cisco bug ID CSCud04270 for the most complete list of affected product versions.
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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.
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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 tac@cisco.com for assistance.
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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.
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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.
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Show LessVersion Description Section Status Date 1.0 Initial Release NA Final 2013-Aug-28
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