Cisco Security Advisory
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AV:N/AC:L/Au:N/C:N/I:P/A:N/E:F/RL:OF/RC:C
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A vulnerability in the web framework of Cisco Unified IP Phone 9900 Series could allow an unauthenticated, remote attacker to upload arbitrary files to the phone.
The vulnerability is due to insufficient validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted request to the server. An exploit could allow the attacker to upload arbitrary files to arbitrary locations on an affected device.
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 behind a firewall to send crafted HTTP requests to the targeted device. This access requirement may reduce the likelihood of a successful exploit.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
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Customers are advised to consult Cisco bug ID CSCup90424 for a complete list of affected product versions.
Vulnerable Products
At the time this alert was first published, Cisco Unified IP Phone 9900 Series Firmware versions 9.4(.1) and prior were vulnerable. Later versions may also be vulnerable.Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by these vulnerabilities.
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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 may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
Administrators can help protect affected systems from external attacks by using a solid firewall strategy.
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 2015-Feb-04
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