Cisco Security Advisory
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AV:N/AC:M/Au:N/C:N/I:P/A:P/E:POC/RL:OF/RC:C
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A vulnerability in the Autonomic Networking Infrastructure (ANI) feature of Cisco IOS software could allow an unauthenticated, remote attacker to overwrite some configuration values received via ANI.
The vulnerability is due to insufficient validation of received Autonomic Networking (AN) messages. An attacker could exploit this vulnerability by sending crafted AN messages. An exploit could allow the attacker to overwrite sensitive configuration and cause a partial denial of service (DoS) condition. A limited set of router services can be affected.
Cisco has confirmed the vulnerability and released software updates.
To exploit this vulnerability, an attacker may need access to trusted, internal networks behind a firewall to send crafted AN messages to the targeted device. This access requirement may reduce the likelihood of a successful exploit.
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Cisco has released bug ID CSCup62167 for registered users that contains additional details and an up-to-date list of affected product versions.
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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.
Administrators can help protect affected systems from external attacks by using a solid firewall strategy.
Administrators are advised to monitor affected systems.
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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 tac@cisco.com.
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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 2015-Mar-19
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