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 Intelligent Platform Management Interface (IPMI) of the Cisco Unified Computing System Blade Management Controller could allow an unauthenticated, remote attacker to discover valid usernames.
The vulnerability is due to a requirement defined in the IPMI specification. An attacker could exploit this vulnerability by enumerating a list of usernames. A successful exploit could allow the attacker to determine valid usernames based on the responses provided by the IPMI interface.
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.
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-2012-4085
Customers are advised to consult Cisco bug ID CSCtg20761 for the most complete list of affected product versions.
An unauthenticated, remote attacker could exploit this vulnerability to discover valid usernames stored on an affected device. A successful exploit could be leveraged to conduct further attacks.
Technical information is not available.
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 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.