Cisco Unified Computing System contains a vulnerability that could allow a local attacker to cause a denial of service condition. Updates are available.
A vulnerability in the fabric interconnect (FI) of the Cisco Unified
Computing System could allow an authenticated, local attacker to create a denial of service (DoS) condition.
The vulnerability is due to improper
filtering of user-supplied parameters. An attacker could exploit this
vulnerability by providing certain parameters to the debug hardware
command. An exploit could allow the attacker to cause the FI to crash.
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 2.0 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 authenticate and have local access to a targeted device. These access requirements decrease 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-2012-4105
Customers are advised to consult Cisco bug ID CSCtq86468 for a complete list of affected product versions.
A local attacker could exploit this vulnerability to cause the FI of an affected device to crash, resulting in a DoS condition.
The vulnerability is due to improper filtering of user-supplied parameters submitted to the FI of an affected device.
A local attacker could exploit this vulnerability by providing certain parameters to the debug hardware command. An exploit could allow the attacker to cause the FI to crash, resulting in a DoS condition.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to access local systems.
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 email@example.com for assistance.
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.