Cisco Unified Computing System contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition on a targeted device. Updates are available.
A vulnerability in Smart Call Home functionality in the fabric interconnect (FI) of Cisco Unified Computing System could allow an
unauthenticated, remote attacker to create a denial of service (DoS) condition.
vulnerability is due to a buffer overflow in the Smart Call Home
function. An attacker could exploit this vulnerability by intercepting
and spoofing certain control messages that cause Smart Call Home to send a
Cisco has confirmed the vulnerability in a security notice and has released software updates.
At the time this alert was first published, Cisco Unified Computing System versions 1.0, 1.1, 1.2, 1.3, 1.4, and 2.0 were vulnerable. Later releases of Cisco Unified Computing System may also be vulnerable.
To exploit this vulnerability, an attacker may require access to trusted, internal networks to send crafted requests to the affected software. This access requirement could limit 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-2012-4094
Customers are advised to consult Cisco bug ID CSCtl00198 for a complete list of affected product versions.
An unauthenticated, remote attacker could exploit this vulnerability to cause a DoS condition on a targeted device.
Additional technical details are not available.
Administrators are advised to apply the appropriate updates.
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.
Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at firstname.lastname@example.org
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.