Cisco Network Admission Control contains a vulnerability that could allow an unauthenticated, remote attacker to obtain sensitive information. Updates are available.
Description
Cisco Network Admission Control Manager contains a vulnerability that could allow an unauthenticated, remote attacker to obtain sensitive information from a targeted device.
The vulnerability is due to insufficient sanitization of user-supplied input received by the affected software. An unauthenticated, remote attacker could exploit this vulnerability by submitting malicious HTTPS requests to the affected software on port 443. When processed, the requests could allow the attacker to obtain sensitive information.
Cisco has confirmed this vulnerability in a security advisory and has released updated software.
Warning Indicators
Cisco Network Admission Control Manager software version 4.8 is vulnerable.
IntelliShield Analysis
It is likely that an attacker would need to have access to an internal, private network to send a request to the vulnerable port. This requirement could limit the possibility of a potential attack.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
An unauthenticated, remote attacker could exploit this vulnerability to obtain sensitive information, including password files and system logs, from a vulnerable system. This information could be used in further attacks against the system.
Technical Information
Technical information is not available.
Safeguards
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to allow only privileged users to access administration or management systems.
Administrators are advised to implement an intrusion prevention system (IPS) or intrusion detection system (IDS) to help detect and prevent attacks that attempt to exploit this vulnerability.
The Cisco Applied Intelligence team has created the following companion document to guide administrators in identifying and mitigating attempts to exploit this vulnerability prior to applying updated software: cisco-amb-20111005-nac
Patches/Software
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 e-mail at tac@cisco.com.
The security vulnerability applies to the following combinations of products.
Primary Products:
Cisco
Cisco NAC Appliance Software
4.8.0 Base | 4.8.1 Base | 4.8.2 Base
Associated Products:
N/A
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