Cisco Unified Computing System contains a vulnerability that could allow an unauthenticated, remote attacker to gain access to sensitive information. Updates are not available.
A vulnerability in the Fabric Interconnect of Cisco Unified Computing System could allow an unauthenticated, remote attacker to capture KVM media connection credentials.
The vulnerability is due to improperly securing the KVM media traffic between the server and the client. An attacker could exploit this vulnerability by sniffing network traffic. An exploit could allow the attacker to establish an authenticated connection with the KVM server.
Cisco has confirmed the vulnerability in a security notice; however, software updates are not available.
At the time this alert was first published, Cisco Unified Computing System versions 2.2 and prior were vulnerable. Later releases of Cisco Unified Computing System may also be vulnerable.
To exploit this vulnerability, it is likely that an attacker would need access to trusted, internal networks to be positioned between the targeted device and a client transmitting KVM virtual media traffic. These conditions make it unlikely for an attacker to achieve 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-2012-4116
Customers are advised to consult Cisco bug ID CSCtr72970 or the most complete list of affected product versions
An unauthenticated, remote attacker could exploit this vulnerability to gain access to sensitive information, such as the KVM media connection credentials. A successful exploit could be used to conduct further attacks.
The vulnerability is due to improperly securing the KVM virtual media traffic between the server and the client by the Fabric Interconnect of Cisco Unified Computing System.
An unauthenticated, remote attacker could exploit this vulnerability by sniffing network traffic. An exploit could allow the attacker to to establish an authenticated connection with the KVM server, which could be leveraged to conduct further attacks.
Administrators are advised to contact the vendor regarding future updates and releases.
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 are advised to monitor affected systems.
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.