Cisco Unified Computing System contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. Updates are available.
A vulnerability in the public XML API service of Cisco Unified Computing System
Fabric Interconnect could allow an unauthenticated, remote attacker to
create a denial of service (DoS) condition.
The vulnerability is due to improper
input validation in the XML API service. An attacker could exploit this
vulnerability by sending a malformed XML packet. A successful exploit
could cause the XML API service to stop responding.
Cisco has confirmed the vulnerability in a security notice and released software updates.
At the time this alert was first published, Cisco Unified Computing System versions 1.2 and prior were vulnerable. Later releases of Cisco Unified Computing System may also be vulnerable.
To exploit this vulnerability, an attacker must be able to send malformed XML packets to the targeted device, which may reside on trusted, internal networks to which the attacker would likely need access. 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.
Cisco has released a security notice at the following link: CVE-2012-4079
Customers are advised to consult Cisco bug ID CSCtg48206 for the most complete list of affected product versions.
An unauthenticated, remote attacker could exploit this vulnerability to cause the XML API service on an affected device to stop responding, resulting in a DoS condition.
The vulnerability is due to improper input validation in the XML API service used by the affected software.
An unauthenticated, remote attacker could exploit this vulnerability by sending a malformed XML packet to the targeted device. If successful, the attacker could cause the XML API service to stop responding, 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 can help protect affected systems from external attacks by using a solid firewall strategy.
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 Computing System (Managed)
1.0 Base, (2k) | 1.1 Base, (1m) | 1.2 Base
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.