Cisco NAC Appliance contains a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks. Updates are available.
Cisco NAC Appliance contains a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks.
The vulnerability is due to insufficient validation of user-supplied input processed by the affected software. An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to follow a malicious URL. Successful exploitation could allow an attacker to execute arbitrary script code in a user's browser session in the security context of the site that is hosted by the affected software.
Cisco has confirmed this vulnerability in a security notice and software updates are available.
Cisco NAC Appliance version 4.5.1 is vulnerable.
To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions to persuade the user to follow the provided link.
An unauthenticated, remote attacker could exploit this vulnerability to conduct cross-site scripting attacks on a targeted system. Successful exploitation could allow the attacker to execute arbitrary script code in the user's browser and steal sensitive information, such as session tokens or authentication cookies.
The vulnerability is due to insufficient validation of user-supplied input processed by the web authentication function of the affected software.
An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to follow a malicious URL. Successful exploitation may aid the attacker in retrieving session cookies, stealing recently submitted data, or launching further attacks.
Administrators are advised to apply the appropriate updates.
Users are advised not to open e-mail messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in e-mail messages are safe, they are advised not to open them.
Users should verify that unsolicited links are safe to follow.
Administrators are advised to monitor affected systems.
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 e-mail at email@example.com for assistance.
The security vulnerability applies to the following combinations of products.
Cisco NAC Appliance Software
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