Cisco Unified Computing System contains a vulnerability that could allow an authenticated, remote attacker to cause a denial of service condition. Updates are available.
A vulnerability in the administrative web interface of the Cisco Unified Computing System could allow an authenticated, remote attacker to create a denial of service (DoS) condition.
The vulnerability is due to improper parameter input validation. An attacker could exploit this vulnerability by setting the string value of certain parameters to a value larger than the input buffer. A successful exploit could allow the attacker to corrupt the parameters values in the administrative web interface causing administrative sessions to be terminated.
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 Software versions 1.2 and prior were vulnerable. Later releases of Cisco Unified Computing System Software may also be vulnerable.
To exploit this vulnerability, an attacker would need to authenticate to a targeted device which may reside on trusted, internal networks in which the attacker would need access to. These access requirements limits 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-2012-4083
Customers are advised to consult Cisco bug ID CSCtg20751 for the most complete list of affected product versions.
An authenticated, remote attacker could exploit this vulnerability to cause administrative sessions utilized by the affected device to terminate unexpectedly, resulting in a DoS condition.
The vulnerability is due to improper input validation on certain parameters processed by the administrative web interface of an affected device.
An authenticated, remote attacker could exploit this vulnerability by submitting larger string values of certain parameters than the input buffer could hold. Processing the overly large string values of these parameters could corrupt the parameter values in the administrative web interface which would cause the administrative sessions to terminate, 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 allow only privileged users to access administration or management systems.
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.