Cisco Security Advisory
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AV:N/AC:L/Au:N/C:N/I:N/A:P/E:F/RL:OF/RC:C
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Cisco Unified Computing System (UCS) C-Series Rack Server version 1.4 contains a vulnerability that could allow an unauthenticated, remote attacker to cause the Cisco Integrated Management Controller (CIMC), which is used for management/monitoring of the Cisco UCS Rack Server, to stop responding or a reboot of the CIMC.
The vulnerability is due to a failure to limit incoming connections to certain ports. An attacker could exploit this vulnerability by running nmap against the affected device. An exploit could allow the attacker to cause the CIMC to stop responding or a reboot of the CIMC.
Cisco has confirmed this vulnerability in a security notice and software updates are available.
To exploit the vulnerability the attacker may need access to trusted internal networks to run nmap against the targeted system. This access requirement may 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.
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Customers should refer to Cisco bug ID CSCtx19850 for the most complete list of affected product versions.
Vulnerable Products
At the time this alert was first published, Cisco Unified Computing System (Managed) versions 1.4(3s) and prior were vulnerable. Later versions of Cisco Unified Computing System (Managed) may also be affected.Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by these vulnerabilities.
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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.
To mitigate denial of service attacks, apply hardware rate limiter features to limit packets that require CPU processing. See vendor documentation for specific configuration instructions. For hardware rate limiting configuration details, see Cisco Catalyst 6500 Denial of Service (DoS) Protection Configuration Guide.
Administrators are advised to monitor affected systems.
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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 tac@cisco.com for assistance.
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The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Show LessVersion Description Section Status Date 1.0 Initial Release NA Final 2013-Aug-01
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